The Handbook of GeoPeripherals

Transcription

1 The Handbook of GeoPeripherals Georgopoulos Ioannis-Orestis 1 Vardoulakis Ioannis 2 October 6, PhD Student, NTU Athens, Greece 2 Professor, NTU Athens, Greece

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3 Contents 1 WF Four Channel Display Transducer Monitoring Meter 1 2 Tracker 240 Series 3 3 WF Load Ring & LSC-HS Schlumberger Lateral Strain Transducer 7 5 KERN 440 Compact Scale 9 6 WF 61020/61038 Oven & Incubator 11 i

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5 Chapter 1 WF Four Channel Display Transducer Monitoring Meter 1

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22 The Handbook of GeoPeripherals 2

23 Chapter 2 Tracker 240 Series 3

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25 Celebrating 20 years, in the design and manufacture of innovative hardware and software products for the Telecommunication and Process Measurement Industries. TRACKER 200 SERIES Digital Panel Indicator Solutions for: Displacement Temperature Frequency Totalising Weighing Pressure Encoder Timing Flow - T280, T260, T220, T210 Series - T232, T220, T210 Series - T280 Series - T280 Series - T240, T220, T210 Series - T250, T232, T220, T210 Series - T280 Series - T280 Series - T280, T220, T210 Series Ask your Tracker supplier for full details Data Track Process Instruments Ltd No part of this publication may be reproduced or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, or stored in any retrieval system of any kind, without the written permission of Data Track Process Instruments Ltd. DATA TRACK PROCESS INSTRUMENTS 153 Somerford Road, Christchurch, Dorset, BH23 3TY Tel: +44 (0) Fax: +44 (0) sales@dtpisales@dtrack.com Parts Number Issue D

26 Contents Load Cell & Weighing Indicators Setup Guide Introduction...3 Installation...4 Connections...7 Powering the Instrument...9 Connecting the Load Cells Connecting the Communications Interface Connecting the Status Inputs Connecting the Logic Outputs Operator Functions How to Navigate the Configuration Menus Configuration Menu Map Configuring the Display Configuring the Input Calibration Sequence Scaling Configuring User Linearisation Configuring Control Configuring Peak Picking Configuring the Automatic Zeroing Function Configuring & Using Parts Count Mode Configuring Alarms Configuring Logic Outputs Configuring the Analogue Output Configuring Serial Communications Configuring Status Inputs Configuring Function Keys Configuring System Options Product Specification Issue D 1

27 Appendix A - Display Messages Appendix B - Connecting the Serial Interface Appendix C - Using the Native Communications Protocol Appendix D - Realtime Comms Locations Appendix E - Troubleshooting Comms Appendix F - Tracker Fast Start Index Issue D

28 Introduction This Setup Guide describes how to install and configure your instrument. This instrument is marked with the international hazard symbol. It is important to read this Setup Guide before installing or commissioning your panel meter as it contains important information relating to safety and Electromagnetic Compatibility EMC. The instrument provides the following features as standard: 4 configurable alarms. Scaleable analogue retransmission output. Dual logic/status inputs. RS485 serial communications interface with 3 protocols including MODBUS RTU. 5 digit bright LED display. Programmable function keys Optional dual relay output or quad digital (TTL) outputs. 10V bridge/load cell supply Issue D 3

29 Installation To install your instrument, you will need to carry out the following steps: Apply the engineering units label to the right-hand side of the display panel. A sheet of labels covering the most commonly used engineering units is supplied with all units. If the unit you require is not on the sheet, a blank label is provided on which you can use LETRASET. Install the instrument into a panel. Make connections to the instrument. WARNING: Ensure that the power to the instrument is switched off before carrying out any installation or maintenance work. It is recommended that all connections to the terminals are made using ferrules to afford greater reliability and to prevent short circuits between adjacent terminals. Avoid installing the instrument close to switch gear, contactors or motor starters. Do not place signal and power supply wiring in the same loom. Use screened cables or wires for all signal/sensor leads with screen earthed at one point only. If this instrument is not installed in accordance with the instructions in this manual, protection against electrical hazards may be impaired resulting in injury or loss of life. Installation Category II as defined by BSEN and Pollution Degree 2 environments apply. This instrument should be disposed of correctly. Do not burn or throw into any fire as there is a risk of explosion. Please contact your supplier or local council for advice. For data retention purposes, this instrument may contain a lithium battery type CR2032. In normal circumstances, the battery will provide a service life in excess of 5 years Issue D

30 The battery contained in this instrument should be disposed of correctly. Please contact your supplier or local council. Panel Mounting Ensure that there is sufficient space behind the instrument panel for the depth of the instrument to allow for safe routing of cables. The diagram below shows a side view of the instrument's dimensions. The instrument is supplied with an installation kit consisting of 2 mounting clamps and a panel sealing gasket. To install the instrument: 1 Make panel cut-out with the dimensions as shown below. Panel thickness from 1.5mm to 9.5mm can be accommodated. 2 Fit the rubber seal by slipping it over the unit from the rear of the box and pushing it forwards until it sits behind the front lip of the unit Issue D 5

31 3 Insert the instrument into the panel from the front, pushing it through as far as the front lip to ensure correct seating of the rubber seal between the panel and the unit. 4 Working from behind the panel, take the 2 mounting brackets and locate onto the case as shown below (note orientation of keyhole slots relative to instrument case). With the brackets located, slide them backwards until they lock into place. 5 Tighten the screws until they bite into the panel, securing the instrument in place. Take care not to overtighten the screws as this may damage the case of the instrument Issue D

32 Connections The diagram below shows the rear panel terminal connection arrangement. NOTE: Terminals 1 to 6 are not used on some models (see the table on page 8). Rear Panel Terminal Connections Issue D 7

33 Terminal No Outputs Dual Relays Quad TTL 1 None Relay 1 - Common Output GND 2 None Relay 1 - Normally Open Output 1 3 None Relay 1 - Normally Closed Output 2 4 None Relay 2 - Common Output 3 5 None Relay 2 - Normally Open Output 4 6 None Relay 2 - Normally Closed Output supply 7 Screen (GND) 8 Transducer supply +ve 9 10V Transducer supply -ve 10 Receive B 11 Receive A 12 Transmit B 13 Transmit A 14 Status (Logic) Input 2 15 Status (Logic) Input 1 16 Status input common (GND) 17 Power input neutral (-) 18 Power input live (+) 19 Analogue retransmission output - 20 Analogue retransmission output + 21 No connection 22 No connection 23 Sense -ve 24 Sense +ve 25 Input -ve 26 Input +ve Issue D

34 Powering the Instrument The instrument is designed to operate from an AC supply with voltages in the range V AC 50/60Hz mains supply with a maximum power consumption of 20VA when all outputs are fully loaded and the display has all segments illuminated. WARNING - The instrument is designed for installation in an enclosure which provides adequate protection against electric shock. Access to power terminals should be restricted to authorised skilled personnel only. Application of supply voltages higher than those for which the instrument is intended may compromise safety and cause permanent damage. The diagram below shows how the instrument should be connected to the mains supply. Isolation should be provided by a double pole switch and a time delay 1A fuse. Recommended Mains Supply Connections Issue D 9

35 Connecting the Load Cells The load cells should be connected to the instrument as illustrated in the diagrams below. When making connections to the transducer, use a screened cable with the screen connected to ground at one point only. Avoid running signal cables close to cables carrying high current or voltages or those connected to motor drives or contactors. Single Load Cell Transducer Connections with Remote Sense Single Load Cell Transducer Connections with Local Sense Issue D

36 The instrument uses a ratiometric measurement technique to allow variations in the load cell power supply to be compensated for. For best measurement results, connect the instrument's sense input signals at the load cell, which will enable any errors due to wiring impedance to be minimised. Cable impedance may introduce a significant error, especially in multiple load cell applications with long cable runs. For correct operation of 4-wire load cell applications, it is necessary to connect the instrument's sense terminals to the transducer supply output terminals. Multiple Load Cell Transducer Connections Issue D 11

37 Connecting the Communications Interface The diagrams below show the connections necessary to interface your instrument to a PC RS485/422 port or to an RS485 to RS232 converter. It is recommended that a screened twisted pair cable be used for all applications requiring cable lengths greater than 3m. It is also recommended that a 120Ω termination resistor is added across each pair of wires at the furthest point from the master device. The screen of the cable should be connected to the frame ground or ground connection of the master device. The diagram below shows the wiring required for both 4- wire full duplex and 2-wire half duplex installations. 4-Wire & 2-Wire Communications Interface Connections Typical RS485 Multidrop Half Duplex Application Issue D

38 Connecting the Status Inputs There are 2 status (logic) inputs provided by your instrument. The inputs can be used with either voltage free contacts such as relay contacts, switches, open collector transistor outputs or voltage driven. The inputs are active low, ie. apply a short circuit between the status input and status common. The diagrams below show some typical applications. NOTE: These inputs are not isolated from the instrument's input circuit. Volt Free Contacts Open Collector TTL Outputs Issue D 13

39 Connecting the Logic Outputs Connecting to External Logic Inputs Connecting to External Relays Issue D

40 Operator Functions All of the operator functions are described in the following section along with the key actions required. The diagram below shows the facilities available directly from the Operator (Normal) Mode. # Use Key to view or Key to edit (provided the alarm edit option is on - see Front Panel Edit page 77). Represent Alarm Setpoints 1-4. outputs. Also appear after the setpoints on instruments with logic Displays the lowest measured value since last reset (see Reset pages 94 and 98) Issue D 15

41 Displays the highest measured value since last reset (see Reset pages 94 and 98). Displays the average measured value since last reset (see Reset pages 94 and 98). Refers to "calibration seal" and displays a non-resettable value. Changes to any one of the setup items listed below, will cause the SEAL value to increment and thereby show that a calibration change has taken place. disp (display) menu inpt (input) menu SCLE (scale) menu ULin (user linearisation) menu dp (decimal point position). SorC (display value source). Filt (display filtering). SEn (load cell sensitivity). HdSP (high display value). LdSP (low (zero) display value). H-iP (high input). L-iP (low input). EnAb (enable user linearisation). PntS (number of points). di01 - di08 (display values). ip01 - ip08 (input values). Aout (analogue output) menu type (output type). SorC (source of output level). LoW (low scaling). HigH (high scaling). damp (damping filter). CoMM (serial communications) menu SPAn (scaling). L-iP (scaling). H-iP (scaling). Enables Configuration//Setup Mode (see How to Navigate the Configuration Menus page 20) Issue D

42 Operator Mode - Key Functions Caution: the keys have an "auto-repeat" facility whereby holding down a key for longer than necessary will have the same effect as multiple presses. From the normal runtime display: Enter - Allows access to the operator functions (LoW, HigH (peak) and AV (average) values) since last reset, SEAL and ConF (Configuration/Setup Mode). To access the operator functions, press and hold for approximately 3 seconds until LoW is displayed. Next - Function Key 1 can be configured to perform various functions such as fast calibration, zeroing and tare. Details of the facilities available and how to configure the key are described later in this Guide (see Configuring Function Keys page 97). Down - Accesses the 4 alarm and 2 control setpoints for viewing and editing if enabled (see Front Panel Edit page 77). Up - Exits from menus to normal running. Star - Function Key 2 can be configured to perform various functions. Details of the facilities available and how to configure the key are described later in this Guide (see Configuring Function Keys page 97). Up and Down - Pressed together will perform an alarm acknowledge for latched alarms (see Latching page 74 and Alarm Acknowledge page 93) and ACk will be displayed. Menu Mode - Key Functions The instrument may be configured using the front panel keys to enter and navigate through the multi-level menu structure. Caution: the keys have an "auto-repeat" facility whereby holding down a key for longer than Issue D 17

43 necessary will have the same effect as multiple presses. When navigating through the menus, the keys perform the following functions: Enter - Selects or accesses a sub-menu. Next - Scrolls forward through the menus within a level. Up - Moves back up to the parent menu level. Multiple key presses will always return the instrument to the measured value (runtime) display. The menu system lists categories (eg. disp, inpt, SCLE, Aout). Selecting a category may lead to a sub-category, but eventually it leads to a list of configurable instrument parameters (eg. category Aout leads to parameters type, SorC etc.). When the Enter Key is pressed to change a parameter, the existing setting is displayed. Notice that a letter or digit always flashes when a setting is on display. Some settings are chosen from a list of settings (eg. parameter type has 3 settings: 0-10, 4-20, 0-20). Other parameters are setup by editing a multi-digit value (eg. LoW has a default numeric setting of [0000.0]). Selecting a Setting from a List When the first letter of a menu option flashes, it represents the setting for a parameter. cycles round the list of possible settings for the parameter. Aborts the setting selection without changing the setting. Makes the currently displayed setting the new setting Issue D

44 Editing a Value When the last digit of a numeric value flashes, it represents the setting for a parameter. Notice that the flashing digit is the one that is edited by the Up and Down arrow Keys. The sign is changed by editing the most significant digit. Selects the next flashing digit to edit. The next digit left is selected. When the leftmost digit is reached and if the decimal point position can be changed, the decimal point flashes next. Clears the whole value to zero if zero is a valid value. Increments the flashing digit. If the decimal point is flashing, the decimal point moves left. If negative values are allowed and the most significant digit is flashing, the digit rotates round the sequence: Decrements the flashing digit. If the decimal point is flashing, the decimal point moves right. If negative values are allowed and the most significant digit is flashing, the digit rotates round the sequence: Exits, making the edited value displayed the new setting Issue D 19

45 How to Navigate the Configuration Menus This example will show you how to edit one of the unit's configuration options. We will turn down the brightness (labelled bril) of the display. Use this example in conjunction with the Configuration Menu Map on page 22 to navigate your own way to the options that you wish to change. 1. With the unit displaying the current measured value, press and hold until the display changes to show. 2. Press until is displayed. 3. Press to enter the ConF (configuration) menu. 4. Press until is displayed. 5. Press to enter the disp (display) menu. 6. Press to cycle through the sub-menus of the disp menu until is displayed. 7. Press to enter the bril (brilliance) menu. You will know that you have successfully entered the Edit Mode if a flashing figure is displayed. This will be the currently set value for this option. 8. In the case of brilliance, there are 4 options, each numbered 1 to 4 (the default is 4). Press the available to you. Key to cycle through the options Issue D

46 9. If the original setting was 4, cycle to 1 by pressing until 1 is displayed. 10. Press to select 1, save your change and finalise editing. The display brightness will change and become darker. 11. Pressing will move you back up the menu-tree one level for each press of the key. Press this repeatedly until the measured value display appears again Issue D 21

47 Configuration Menu Map Issue D

48 Configuring the Display This menu sets up the instrument's display attributes. Display Menu Map From the Configuration Menu (see page 22) Issue D 23

49 Decimal Point Position Default: 1 decimal place Defines the position of the decimal point on the 5 digit display. The decimal point may be fixed to give 0 to 4 digits after the decimal point or it may be positioned automatically. Automatic positioning displays as many of the most significant digits as possible while allowing the decimal point and sign to remain visible. For example: Value Displayed as (point not needed so not shown) The dp setting limits the range of displayable values as follows: Displayable range Decimal point setting Integers: through 0 to to to to to Any: through to Auto The unit will display over (over) or undr (under) when appropriate. Analogue 54 Comms Location Integer range Read/Write 0 to 5 (5=Auto) Editing Out of Range Values Increasing the dp (decimal point) setting can make editable values go outside of the displayable range. For example: dp 1 Maximum displayable range Alarm Setpoint When dp is changed to 2 Maximum displayable range So Alarm Setpoint 1 of is now out of range Issue D

50 When this happens, it is the users' responsibility to edit such parameters so that they are within the displayable range. Parameters effected by the displayable range are: Alarm setpoints (see page 73). Alarm on-hysteresis and off-hysteresis (see page 76). Analogue output low and high scale points (see page 84). Comms low and high scale points (MODBUS only) (see page 87). User linearisation display points (see page 39). Normally, when editing one of these values, the decimal point is fixed within these values to prevent them being edited to a value that is out of the displayable range. However, if the value becomes out of range due to increasing the dp setting, rather than by editing the value, the decimal point may be movable within such a value. Display Value Source Default: Input Defines the source of the displayed value. The options are: inpt The measured input value. HigH The maximum measured input value. LoW The minimum measured input value. AV The average measured input value. CoMM The value received from the communications interface. The time over which the average value is taken is specified in the AVti (average time) option in the SYSt (system) menu (see Averaging Time page 101). When set to CoMM, the display value is taken from Analogue Location 3. For example, a SCADA system can read the weight from the instrument via Analogue Location 1, perform some operation on the value and send the processed value back to the instrument for display via Analogue Location Issue D 25

51 Analogue 53 Comms Location Read/Write Analogue value Display source Input High Low Average Comm Eg. Sending ;001SA53 0 <CR> via comms, sets the display source to input. Update Rate Default: 2Hz Allows the update rate of the display to be set from 10Hz to 2Hz. The 10Hz update rate may vary from 7Hz to 10Hz. Analogue 55 Comms Location Read/Write Analogue value Update rate 2Hz 4Hz 10Hz Filtering Default: 0 seconds Applies a simulated rolling average filter to the displayed value. The time constant of the filter is entered in seconds from 0 to disables the filter (see also Averaging Time page 101). Analogue 56 Comms Location Integer range (seconds) 0 to 999 Read/Write Least Significant Digit Zero Default: Off on enables the right-hand digit to be displayed as 0. For example, will be displayed as when LSd0 is on. Logic 49 Comms Location Read/Write On Least significant digit displayed as 0 Off Normal display Negative Numbers Default: On on allows the display of negative numbers. When off, negative numbers are displayed as Issue D

52 Logic 50 Comms Location Read/Write On Negative values displayed Off Negative values displayed as 0 Leading Zero Suppression off allows leading zeros to be displayed. Default: On Logic 48 Comms Location On Off Leading zeros not displayed Leading zeros displayed Read/Write Brilliance Default: 4 Allows the brightness of the display to be adjusted to match other instruments or ambient lighting conditions. The brightness may range 1 (dimmest) to 4 (brightest). Analogue 57 Comms Location Read/Write Analogue value Brilliance setting Font Selects one of 2 fonts for the display of numerals. Default: Off Logic 47 Comms Location Off Font 1 On Font 2 Read/Write Test Performs a display test that illuminates all display digits and segments ( ) when the Enter button is pressed. Press Enter again to proceed Issue D 27

53 Configuring the Input The indicator has to be setup to match the output from the load cell. This information should be provided by the manufacturer. Input Menu Map From the Configuration Menu (see page 22) Automatic Sensitivity Selection Default: Off If the load cell full scale output (in mv/v) is not available, set AUto to on. The instrument must then be calibrated using known weights (see Calibration Sequence page 32). Logic 57 Comms Location On Off Read/Write Auto finds load cell sensitivity Load cell sensitivity is specified Load Cell Sensitivity Default: 20mV/V Determines the most appropriate internal measurement range used by the instrument. Enter the approximate full scale output of the load cell in mv/v. If a number of load cells are connected to the instrument in parallel, the sensitivity should be set to the average rated output of all the load cells, eg. if 3 x 10mV/V load cells are connected in parallel, Issue D

54 sensitivity is 10/3 = 3.33mV/V. If you have set AUto to on, this parameter is ignored. Analogue 63 Comms Location Read/Write Sensitivity range (mv/v) 0.10 to Damp The filter is designed to damp the effect of vibration or noise on measurements. Without this anti-vibration filter, the last 2 or 3 digits of a weight measurement may continuously change due to the effect of vibration, especially for larger weights. The filter works by damping only the small changes between successive measurements. In other words, consecutive changes below a set threshold are damped whilst large changes beyond the threshold are not. The filter is setup by defining this threshold. Consecutive measurements that change by less than this threshold are called qualifying measurements and it is these measurements that activate damping. Smaller changes will be damped measurement. Before Actual weight Measurement showing effect of vibration After Rapid step response maintained Actual weight Filtered measurement. Response to small changes slowed Effect of Vibration Damping Filter Damping is achieved by taking a simulated rolling average of all qualifying measurements over the last 20 seconds. In this way, the most recent qualifying measurement has only a small damped effect on the filtered average Issue D 29

55 NOTE: When the filter is first activated, 20 seconds worth of qualifying measurements will not have occurred, so the first qualifying measurement is assumed to apply over the time when non-qualifying measurements were taken. The important point, is that the effect of the most recent qualifying measurement is made smaller by averaging. The damp menu allows the amount of noise on measurements due to vibration to be specified or sampled. During normal operation, the instrument responds slowly to small changes in measurements below this threshold, with a slow step response of 20 seconds. Large consecutive changes in weight measurements above the threshold continue to have a fast step response of 125mS+. NOTE: As this input filter is applied at the earliest possible stage, all downstream processes that accept the measured input, such as the analogue output and alarm comparisons, should benefit from the effect of this filter. Damping Values Default : 0 Select VAL from the damp menu option to specify the noise level to be damped. The value entered is expressed in the same engineering units as the displayed value. Changes in consecutive measurements below this value, will be damped by averaging them over 20 seconds. It is recommended that the read option described below, is used in preference to VAL. VAL might be used to reduce the noise band so that real changes in weight close to the threshold do not take a long time to settle. However VAL might also be used to increase the noise band so that weights greater than that sampled, will be adequately damped. It is assumed that larger weights would need a greater value because they would vary more. Any positive value in the displayable range may be entered. The position of the decimal point matches the displayed measurement and it may not be edited. A value of zero disables the noise band filter completely Issue D

56 It is recommended that this function is used to sample the noise level to be damped. Before selecting read from the damp menu, a large weight, similar to the largest expected steady measurement during normal use, should be placed on the load cell. Pressing the instrument s Enter key starts a 10 second countdown display during which, the instrument samples variations in the measurements. At the end of the sampling period, the maximum variation between measurements, plus 2%, is flashed on the display. This value is the new noise band setting. Changes in consecutive measurements below this value will be damped by averaging them over 20 seconds. Example Problem An instrument measures weight from 0.0 to g. When a small object is placed on the load cell, the instrument displays between 10.5 and 11.0g. However, when a larger weight is put on the load cell, the instrument displays between and 592.0g. The weight measurement seems less stable for the larger weight. Reason When large weights seem to be less stable, it is quite likely that this is due to vibration. This is because a large mass with great inertia will move much less than a light weight when the load cell it rests on vibrates. As the load cell vibrates up and down, a large weight will tend to remain still, whilst a light weigh is more likely to move up and down with the load cell. Solution: To make the weight measurement more stable, place a large weight on the load cell and select the read option. The instrument will sample about 80 measurements over 10 seconds and will find the maximum and minimum measurements over that time. At the end of the sample period, the maximum amount of change in the measurement is flashed on the display. From this point onwards, the instrument damps all measurements that change by less than this amount, ie. the vibrations are damped. Analogue 62 Comms Location Sets the damping filter value in engineering units Read/Write Issue D 31

57 Calibration Sequence Use this facility to calibrate the instrument to known weights. Before the instrument can measure weights accurately, it must know exactly what output (in mv/v) from the load cell corresponds to 2 known weights. Calibration Menu Map From the Configuration Menu (see page 22) Load cell mv/v CAL (calibration) menu Weight represented SCLE (scale) menu low input low display high input high display The calibration procedure prompts for known weights to be placed on the load cell: firstly the low known weight (L-ip), and secondly, the high known weight (H-ip). Both of these values can also be entered manually (in mv/v) from the SCLE (scale) menu (see Scaling page 35). The instrument is recalibrated to the weights only if the weights are acceptable. If they are unacceptable (over range or equal), the calibration is unchanged. The weights should be as different as possible. The low Issue D

58 weight is normally zero. NOTE: For best results, power the system for a minimum of 30 minutes before calibrating. To access the CAL prompt from Normal Operating Mode: 1. Press the Enter Key and hold down for approximately 3 seconds until LoW is displayed. 2. Press the Next Key 3 times until the ConF (configuration) menu is displayed. 3. Press the Enter Key once to access the ConF menus. 4. Press the Next Key twice until CAL is displayed. To calibrate the instrument: 1. Press Enter to begin the CAL procedure. 2. Apply low weight or load to transducer and allow the output to settle. Press the Enter Key. 3. Wait while the load cell output is being measured. 4. Apply high scale weight or load to transducer and allow the output to settle. Press the Enter Key. 5. Wait while the load cell output is being measured. If the instrument has detected an error during calibration, 1 of the 3 error messages (6a to 6c below) will be displayed. The original calibration values will be retained. 6a. The measured output from the load cells at the 2 calibration points were closer than 0.02mV/V. Press Enter to return to the menu Issue D 33

59 6b. or The instrument input was too high during the calibration process. Press Enter to return to the menu. 6c. or The instrument input was too low during the calibration process. Press Enter to return to the menu. Should calibration fail (6a to 6c displayed), press the Enter Key to continue and the unit returns to CAL. 1. The instrument has completed the calibration process with no errors detected and the new calibration data will be used for all subsequent measurements. Logic Comms Locations for remote operations Logic 25 (Read/Write) Write On To trigger first and subsequent steps of calibration procedure. Logic 24 (Read-Only) Test Off Test On To ensure previous calibration step finished (Off) before writing (On) again. On indicates that more calibration steps need to be carried out before calibration is complete Issue D

60 Scaling Load Cell & Weighing Indicators Setup Guide If the system is being calibrated from the information on the load cells' calibration certificate, all the values in the SCLE (scale) menu must be entered. Scale Menu Map From the Configuration Menu (see page 22) If the system is calibrated to known weights as described above, do not change H-ip and L-ip. Enter weights for HdSP and LdSP only. If the scaling is changed via comms, the instrument must be told when to use the new setup by setting Logic Location 44 On. Logic 44 Comms Location On Write-Only Makes the instrument use scaling changes High Display Value Default: 20 Enter the value, in engineering units, of the high calibration point (eg. 50 Tonnes). If the system has not been calibrated to a known weight/load, enter the full rating of the load cell(s) Issue D 35

61 Analogue 75 Comms Location Integer range Read/Write to to 5 decimal places Low (Zero) Display Value Default: 0 Enter the value, in engineering units, of the low calibration point (eg. 0 Tonnes). If the system has not been calibrated to a known weight, set this parameter to zero. Analogue 73 Comms Location Integer range Read/Write to to 5 decimal places High Input Default: 20mV/V This is the signal output from the load cell that corresponds to the high display value. This value may be entered numerically, and is generally supplied as part of the documentation with the load cell. The required value is the rated output of the load cell in mv/v. Do not change if the load cell is calibrated using weights. Analogue 76 Comms Location Read/Write Integer range (mv/v) to Low Input Default: 0mV/V This is the signal output from the load cell in mv/v that corresponds to the low display value, usually 0mV/V. This value may be entered numerically, and is generally supplied as part of the documentation provided with the load cell. Do not change if the load cell is calibrated using weights. The load cell's offset error at zero is often expressed in µv (microvolts) at 10V excitation, eg. a load cell's offset when there is no load is 2.4µV at 10V excitation. To convert to mv/v, divide 2.4µV/10V giving 0.24µV/V and divide again by 1000 (µv per mv) giving mV/V. Analogue 74 Comms Location Read/Write Integer range (mv/v) to Issue D

62 Configuring User Linearisation This menu can setup the instrument with a non-linear relationship between the input from the load cell and the displayed value. # User Linearisation Menu Map From the Configuration Menu (see page 22) Issue D 37

63 Between 2 to 8 calibration points may be defined in terms of load cell input (mv/v) and the corresponding displayed value. A 3-point relationship is illustrated below. Display di02 2 di03 3 Notice that: di01 1 ip01 ip03 ip02 Input The points do not need to be declared in any order, the last point declared may lie between 2 other points. The instrument joins the points in order of ascending input as illustrated. The input value may not be the same for 2 or more points. The display value may be the same for 2 or more points. User linearisation can compensate for a non-linear relationship between the signal from the load cell and the weight it represents. Enable Default: Off on enables user linearisation. When enabled, the user linearisation overrides scaling entered from the CAL (calibration) and SCLE (scale) menus. Logic 46 Comms Location On Off Enables user linearisation Disables user linearisation Read/Write Number of Points Default: 2 Defines the number of user linearisation points. This may range from 2 to 8. 2 points would define a linear scale Issue D

64 Analogue 72 Comms Location Integer range 2 to 8 Read/Write Display Values Default 0.0 to Define the displayed value corresponding to the input value for the point. Together di01 and ip01 define point 1. Similarly di02 and ip02 define point 2, etc. Display values may be any value in the displayable range. This is dictated by the decimal places setup from the disp (display) menu (see Decimal Point Position page 24). Analogue Comms Locations Read/Write Analogue Displayable range (see page 24) di01 di02 di03 di04 di05 di06 di07 di08 Input Values Default 0.0 to Define the input value corresponding to the displayed value for the point. Together di01 and ip01 define point 1. Similarly di02 and ip02 define point 2, etc. Input values are expressed in mv/v. They represent the signal from the load cell. They should not fall outside the range -20 to +20mV/V. When AUto sensitivity detection is off in the inpt (input) menu (see Automatic Sensitivity Selection page 28), pressing Enter in response to ip01 to ip08, causes the existing input value for the point to be presented for editing. The value given, should be expressed to as many decimal places as possible. When the AUto sensitivity detection is on in the inpt menu (see Automatic Sensitivity Selection page 28), ip01 to ip08 lead to a submenu which presents the following options: To enter the input value manually via the front panel keys. To select VAL, press Enter when VAL is displayed. The Issue D 39

65 existing input value for the point is presented for editing. The value given should be expressed to as many decimal places as possible. To sample the load cell output applied to the instrument input. To read, the input from the load cell should be applied to the instrument's load cell input before pressing Enter to begin a read. Analogue Comms Locations Read/Write Analogue Input value ip01 ip02 ip03 ip04 ip05 ip06 ip07 ip08 If the user linearisation is changed via comms, the instrument must be told when to use the new setup by setting Logic Location 45 On Issue D

66 Configuring Control The control feature is used for repetitive filling applications either by weighing the target vessel (fill) or by measuring the loss of weight of the supply vessel (loss). The menus are visible only on instruments fitted with dual relays or quad TTL outputs. Fill Control Loss Control Issue D 41

67 Control Menu Map From the Configuration Menu (see page 22) Issue D

68 Issue D 43

69 Issue D

70 An Example of Fill Mode using Main and Trickle Feed A B C D E F G The empty vessel arrives and is detected by one of the following: Status Inputs 1/2, Function Keys 1/2, weight of empty vessel (level). After trigger delay, weight of vessel is tared out and Control Output 1 is activated. When weight exceeds Control SP-1, Control Output 1 is deactivated. After in-flight settling time: weight is measured, over-fill error is used to adjust Control SP-1 and Control Output 2 is activated. When weight exceeds Control SP-2, Control Output 2 is deactivated. After delay: weight is measured and error is used to adjust Control SP-2. Vessel removed: wait for next trigger. NOTE: Until the first trigger, the gross weight is displayed. Once the first trigger has occurred, the tared (delivered) weight is always displayed Issue D 45

71 Typical Loss of Weight Application with Idle Function 1 Empty vessel arrives, triggers optional delay, then tares and activates Control Output 1. 2 When tared weight falls below SP-1, Control Output 1 is deactivated and Control Output 2 is activated. 3 When tared weight falls below SP-2, Control Output 2 is deactivated. 4 When untared weight falls below idle-on setpoint, fill finishes, but further triggers ignored until untared weight above idle-off setpoint (source vessel refilled). NOTE: Until the first trigger, the gross weight is displayed. Once the first trigger has occurred, the tared (delivered) weight is always displayed. NOTE: When a fill finishes, the instrument will enter the idle state earlier than expected if there is not enough weight to finish another fill Issue D

72 Enable To use the control facilities, turn this parameter on. Default: Off Logic 202 Comms Location On Off Enables control function Disables control function Read/Write NOTE: To reset the control operation in mid sequence, use the reset function (see pages Reset 94 & 98) or turn EnAb off and on again. Type above. Default: Fill Select FiLL or LoSS of weight for the application as described Logic 203 Comms Location On Off Selects loss control Selects fill control Read/Write Sequence Start This menu defines what triggers Control op-1 and any delay between trigger and op-1 activation. Trigger Default: Off The trigger used to start filling can be selected from any combination of the following: StA1 Status Input 1 (see page 13). StA2 Status Input 2 (see page 13). KEy1 Function Key 1. KEy2 Function Key 2. LEV Weight of empty vessel (fill only). Triggers may be selected by turning the parameter on. For example, either Status Input 1 or Function Key 2 can trigger the filling sequence if both parameters are on Issue D 47

73 Logic Comms Locations Read/Write Logic State Triggered by 204 On Status Input 1 closed contacts 205 On Status Input 2 closed contacts 206 On Function Key 1 pressed 207 On Function Key 2 pressed 208 On Weight > level (fill only) Level Menu (Use for Fill Control Only) Default: This menu configures filling to be triggered when an empty vessel is detected by its weight (load). Trigger by level normally overrides triggering by status input or function key. This is because a trigger by status input or function key conflicts with the measured weight if it is below the trigger level. So, in this condition, the instrument ignores status input and function key triggers. However, when AndS is on, trigger by level is ignored unless the configured status input(s) is (are) activated. on enables triggering by level. Logic 208 Comms Location On Off Enables trigger by level Disables trigger by level Default: Off Read/Write Default: 10.0 Defines the weight that must be exceeded to trigger filling. For example, if empty vessels are 10Kg, specify a significantly lower weight like 6Kg. Analogue 234 Comms Location Read/Write Trigger level setpoint value Displayable range (see 24) Default: Off on prevents triggering by level unless triggering by Status 1 and/or 2 has also been setup And those Status inputs are activated Issue D

74 Logic 209 Comms Location On Off Read/Write Level and status input(s) required Level triggers independently Trigger Delay Default: 0.5 seconds Delays the actual filling after the initial trigger to allow the weighing system to stabilise after the placement of an empty container onto the load cell. The delay range is from 0 (no delay) to 59.9 seconds. A delay should always be used for fill control. Analogue 235 Comms Location Delay range (seconds) Read/Write 0 to 2995 ( 20 ms ticks) Feeder 1 Setpoint Parameters This menu sets up the main feed control (see diagrams pages 41, 45 & 46). The main feed normally performs the majority of the filling quickly, leaving the trickle feed to top up precisely. The main feed can be setup to perform the whole fill by disabling the trickle feed. The trickle feed is disabled by setting SP-2 in the off2 menu to a value smaller than SP-1 and setting op-2 to activate no outputs. Output (Main Feed) Default: Output 1 (Relay 1) At least one output must be selected. The output used should not be activated by other facilities, eg. alarms. Once activated, the output remains on until the weight reaches SP-1. Logic Comms Locations Read/Write Logic On enables Off disables Output 1 Output 2 Output 3 Output 4 Setpoint 1 Default: 30.0 Defines the main feed cut-off weight. Typically, where 2 outputs (main and trickle feed) are used, this value should be about 3/4 of the required final fill weight. When only one control output is used, this value should be the exact required final fill weight. In either case, the weight Issue D 49

75 specified does not include the weight of the vessel/palette. The weight should be negative when control type is loss. When Cor1 is not 0, a working copy of SP-1 is automatically corrected on each fill to achieve the specified ideal: SP-1. Therefore, despite corrections to the working copy, SP-1 remains the ideal. Changing SP-1, repowering the instrument, using the reset function (see Reset pages 94 & 98) or re-enabling control, all reset the working SP-1 to the displayed ideal. The working setpoint is then "re-learned" after a few fill cycles. Analogue 236 Comms Location Read/Write Setpoint 1 range Displayable range (see page 24) Setpoint 1 Correction (Fill Mode Only) Default:0.00% Defines an optional correction made to SP-1 as a percentage of the error between the target weight (SP-1) and the delivered weight. In other words, SP-1 is adjusted to anticipate the error and partially correct for it in the next fill. Eg: SP-1 (feed cut-off) = 100Kg Delivered weight = 105Kg Cor1 (required correction) = 10% in Kg = ( ) x 10/100 = 5 x 0.1 =.5Kg New SP-1 (feed cut-off) = = 99.5Kg To disable this feature, set to 0%. Values below 50% are recommended. Changing SP-1, repowering the instrument, using the reset function (see Reset pages 94 & 98) or re-enabling control, all reset the working SP-1 to the displayed ideal. The working setpoint is then "re-learned" after a few fill cycles. Analogue 237 Comms Location Read/Write Correction 1 range (%) 0.00 to Issue D

76 Second (Trickle) Feeder Parameters This menu sets up the trickle feed control (see diagrams page 41, 45 & 46). The main feed normally performs the majority of the fill fast, leaving the trickle feed to top up precisely. However, if the main feed has been setup to do the whole fill, the trickle feed should be disabled by setting SP-2 to 0 and op-2 to activate no outputs. Output (Trickle Feed) Default: Output 2 (relay 2) Defines the output(s) that control the trickle feeder. The output(s) is/are activated after the weight has reached SP-1 and remains so until it reaches SP-2 (see diagrams on pages 45 & 46). The output(s) chosen should not be used by other facilities such as alarms and peak picking. Logic Comms Locations Read/Write Logic On enables Off disables Output 1 Output 2 Output 3 Output 4 Setpoint 2 Default: 60.0 Defines the trickle feed cut-off weight. When the trickle feed is used, SP-2 should be the final fill weight required. When only the main feed is used, SP-2 should be 0. SP-2 should not include the weight of the empty vessel/palette. SP-2 should be negative when control type is loss. When Cor2 is not 0, a working copy of SP-2 is automatically corrected on each fill to achieve the specified ideal: SP-2. Therefore, despite corrections to the working copy, SP-2 remains the ideal. Changing SP-2, repowering, using the reset function (see Reset pages 94 & 98) or re-enabling control, all reset the working SP-2 to the displayed ideal. The working setpoint is then "re-learned" after a few fill cycles. Analogue 238 Comms Location Read/Write Setpoint 2 range Displayable range (see page 24) Issue D 51

77 Setpoint 2 Correction (Fill Mode Only) Default:0.00% Defines the optional correction made to SP-2 as a percentage of the error between the target weight SP-2 and the delivered weight, eg. SP-2 is corrected downwards if the delivered weight is too much, so the overshoot is anticipated on the next fill. If Cor2 is 50, the correction would be half the excess delivered (see also Setpoint 1 Correction page 50). To disable this feature, set to 0%. Values below 50% are recommended. Analogue 239 Comms Location Read/Write Correction 2 range (%) 0.00 to Inflight Time (Fill Mode Only) Default: 0.5 seconds Specifies the settling time between the weight crossing SP-1 or SP-2 and the delivered weight being measured in order to establish the overshoot and necessary correction. Neither control output is activated during this time. A non-zero value must be entered when control type is fill. tfly is ignored when control type is loss. The range is 0.1 to 99.9 seconds. Analogue 240 Comms Location Integer range (seconds) Read/Write 5 to 495 (20mS ticks) Damping (Fill Mode Only) Default: 0.0 Specifies the number of seconds for which the weight must be continuously above the setpoint before an output is turned off. The value may range from 00.0 to 05.1 seconds. This option is designed to prevent momentarily high weights, referred to as spikes, from tripping off the feeders too early when they cross over high-acting off-setpoints. Spikes are most often caused by the deceleration of discrete objects landing on the load cell. Spikes may be less serious when controlling the delivery of fine particles and fluids as these might produce a more constant positive error in the measured weight as they land and decelerate on the load cell during delivery Issue D

78 Spike rejection works by defining an off-delay for the feeder control outputs. With a suitable off-delay setup, the off-setpoint must now be crossed for the whole duration of the off-delay before the feeder is turned off. Ideal Behaviour Weight Off2 setpoint_ Off1 setpoint. Control on output 1 Control on output 2 Stage: Actual Behaviour without Off-delay Actual Behaviour with Off-delay Weight Off2 setpoint Off1 setpoint Control on output 1 Outputs 1 & 2 shut off too low by unpredictable amounts Outputs 1 & 2 shut off too high by smaller and predictable amounts Control on output 2 Stage: Effect of Off-delay on Fill Control Process Key to Stages 0 = waiting for empty vessel. 1 = pre-tare settling delay. 2 = fast filling. 3 = settling delay 1. 4 = trickle filling. 5 = settling delay 2. 6 = waiting for full vessel removal. 7 & 8 = waiting off-delay time to turn off relay Issue D 53

79 The off-delay could cause a small overfill that can be anticipated either by reducing the off-setpoints slightly or by enabling the automatic setpoint correction facility. Reduce the setpoint slightly if the automatic correction facility is not used. NOTE: When this setting is accessed via comms, it is always 50 times bigger than the true setting. For example, a comms value of 255 always represents a delay of 5.1 seconds. Analogue 242 Comms Location Integer range (1/50 th second) 0 to 255 Read/Write Safe Default: Off Normally, the control process displays the weight delivered to each target vessel as it is filled. So when the vessel is empty, the instrument displays 0, and when it is full, the weight delivered. The display rises from 0 to the delivered weight during each filling. This is true in Fill and Loss Mode (although in Loss Mode, the delivered weight is displayed as a negative value). Displaying the rising delivered weight seems ideal, but it is useful to display the target weight at the start of each fill when a target vessel is actually empty, and 0 when the target vessel is full. It can be useful if the display value falls from the target weight to 0 during each target vessel fill as the operator sees momentary acknowledgement of the target weight at the start of each fill. This may allow the operator enough time to prevent a spillage if the target weight has been entered as too large by accident. If however, the instrument simply displayed delivered weight, the operator would not notice the problem until the delivered weight was well past the capacity of the target vessel. When SAFE is off, the display value rises from 0 to the target weight as described below during each fill. Displayed value = delivered weight By setting the SAFE option to on the display value falls from the target weight as described below, to 0 during each fill Issue D

80 Displayed value = target weight minus delivered weight By default this option is off which makes the display value behave as illustrated by the graphs on page 53. Target weight means the weight that the user wants to deliver to each vessel. More specifically, the target weight is actually the largest of the 2 working control setpoints, ie. whichever setpoint is furthest from zero. This is because Control Setpoint-2 can be disabled by setting it to a smaller value (closer to zero) than Control Setpoint-1. For instance, if Control Setpoint-2 is set to zero, then Control Setpoint-1, assuming it is not also zero, represents the target weight. The term working setpoints means the ideal setpoints entered by the user plus or minus the automatic corrections learned by the instrument from errors in earlier delivered weights. Working setpoints are generally only slightly different from the ideal setpoints and will only be different if the correction % for each control setpoint is non zero, ie, if the user has indicated that automatic in-flight corrections are wanted. Logic 224 Comms Location On Off Enables safe fill control Disables safe fill control Read/Write Idle (Loss of Weight) Default: Disabled The purpose of the idle facility is to suspend filling operations while the source vessel is not full enough or simply not ready. While control is idle, both control outputs are turned off. Idle can be triggered by: Trigger Idle starts Idle ends StA1 Closing Status Input 1 contacts Opening Status Input 1 contacts StA2 Closing Status Input 2 contacts Opening Status Input 2 contacts KEy1 Pressing Function Key 1 Pressing Function Key 1 again KEy2 Pressing Function Key 2 Pressing Function Key 2 again LEV The weight of the source vessel falling below Alarm Setpoint 4 The weight of the source vessel rises above Alarm Setpoint Issue D 55

81 When idle is triggered by level, then Alarm Setpoints 4 and 3 determine the idle-on and idle-off setpoints respectively. When used in this way, Alarms 3 and 4 should be disabled or setup to activate NO outputs that may conflict with the control process. Idle could be used in Fill Mode to de-activate control outputs. Logic Comms Locations Read/Write Logic State Effect 210 On Triggers by Status Input On Triggers by Status Input On Triggers by Function Key On Triggers by Function Key On Triggers by level (weight) 215 On Enters idle directly 215 Off Exits idle directly Time-out Default: 60 seconds Limits the maximum time any control output can stay on. If a control output does stay on for more than the specified time, both control outputs are unconditionally turned off and the instrument waits for another trigger. When the value is 0, there is no limit to the time an output can stay on. Analogue 241 Comms Location Read/Write Time-out integer range (seconds) 0 to Issue D

82 Configuring Peak Picking This menu sets up peak picking. Peak Picking Menu Map From the Configuration (see page 22) Issue D 57

83 Issue D

84 Peak picking is optional. In its simplest form, peak picking sets up the instrument so the displayed weight is updated only when triggered. A delay between the trigger and the display update can be setup. The trigger may be a status input, a function key, an alarm or control output, or based on the measured weight. Advanced peak picking functions include: A tolerance alarm output: triggered when a peak weight falls outside a user defined tolerance band. The alarm can also be setup to activate if no triggers occur within a set time. Automatic adjustment of the tolerance band's position in the same direction as the last peak's deviation from the band's setpoint. A limit alarm output, triggered when the tolerance band's adjustment limits are reached. Adjustment beyond the limits is prevented. The tolerance alarm can indicate rejects and its automatic adjustment may allow for gradual changes in density. Enable An Example of the Peak Picking Trigger Process Default: Off on enables peak picking. Changing this parameter from off to on, clears any activated peak picking alarms and makes the process wait for a trigger Issue D 59

85 The reset function can be used to reset the peak picking function at any point. This can be enabled from a function key or the StA1, StA2 (status input) menus. Any outputs, status inputs or function keys to be used by peak picking should not be used for other facilities such as alarms. Logic 229 Comms Location On Off Enables peak picking Disables peak picking Read/Write Trigger Default: Off (with exception of LEV) This menu sets up the display update trigger. When peak picking is enabled, this trigger is the only normal cause of display updates. Therefore, at least one trigger source must be setup: Trigger on Method StA1 When Status Input 1 contacts closed StA2 When Status Input 2 contacts closed KEy1 When Function Key 1 momentarily pressed KEy2 When Function Key 2 momentarily pressed CtL1 When control turns off Control Output 1 CtL2 When control turns off Control Output 2 AL1 When Alarm 1 is activated AL2 When Alarm 2 is activated AL3 When Alarm 3 is activated AL4 When Alarm 4 is activated LEV: type: HigH When weight > LEV: SP (see Type of Level LoW When weight < LEV: SP Trigger on the next page) none Weight has no effect With the exception of trigger by LEV (see Level Trigger below), turning a trigger option on, enables triggering by that method. During operation, instruments do not require status input trigger contacts to stay closed any longer than is necessary to detect the transition from open to closed, as this acts as the trigger. Closing the contacts for half a Issue D

86 second should be adequate, and they may stay closed longer provided that they open before the next trigger. During operation, a function key, setup as a trigger, may need to be held down for a second or 2 to be successful. Logic Comms Locations Read/Write Logic On triggers by StA1 StA2 KEy1 KEy2 CtL1 Logic On triggers by CtL2 AL1 AL2 AL3 AL4 Level Trigger This menu sets up a level trigger for peak picking. Type of Level Trigger Type options are: Default: High HigH Triggers when weight > setpoint. LoW Triggers when weight < setpoint. NonE Disables trigger by level. (see Level Trigger Setpoint below for HigH and LoW options). Analogue 245 Comms Location Read/Write Integer value Effect None High Low Level Trigger Setpoint Default: 50 Specifies the level that the weight must rise above or fall below, to trigger peak picking. Typically, SP would be less than half of the expected minimum valid peak weight. SP is ignored if type is set to NonE. Analogue 246 Comms Location Read/Write Setpoint range Displayable range (see page 24) Issue D 61

87 Delay after Trigger Default: 1 second Specifies the delay between the peak picking trigger and displaying the peak value. The measured weight at the end of the delay is displayed. The delay should be long enough for the weight reading to reach a steady state after the trigger, but not so long that the peak to be measured is missed. The delay may range from 0.0 to seconds (0.0 is not recommended). Analogue 247 Comms Location Integer delay range (seconds) Read/Write 0 to 9995 (20mS ticks) (eg. 5=1 second) Tolerance Alarm This menu sets up an optional tolerance alarm, triggered when a peak weight falls outside a tolerance band. It is not applicable on instruments without outputs. Tolerance Alarm Output Default: --3- (if fitted) Defines the output(s) activated when peaks fall outside of the tolerance band (see Tolerance Band - High & Low Deviations page 63), or a time-out occurs (see Time-out page 66). Each illuminated digit position may be a digit or a hyphen. Digits indicate outputs that are enabled. For example --3- indicates Output 3 is activated. The flashing digit/hyphen can be edited with the Up/Down Keys. The Next Key is used to advance to the next output position. Check used outputs are not unintentionally used by alarms or control. Logic Comms Location Read/Write Logic On enables Output Off disables Output Tolerance Alarm Setpoint Default: Specifies the ideal peak weight sought Issue D

88 The top and bottom of the tolerance band are expressed as weight deviations relative to this setpoint. Therefore, when t-sp is adjusted, the whole tolerance band moves. When a peak weight falls inside the tolerance band but does not equal the ideal weight, and if a tolerance adjustment has been setup, the t-sp is adjusted (see Tolerance Adjustment page 64). When a peak weight falls outside the tolerance band, the tolerance alarm output is activated (see Tolerance Alarm Output page 62). The instrument maintains and adjusts a working copy of t-sp, so t-sp remains the ideal peak weight. Analogue 248 Comms Location Read/Write Tolerance setpoint range Displayable range (see page 24) Tolerance Band - High & Low DeviationsDefault: Define the highest and lowest acceptable deviations above and below the setpoint weight (t-sp). Both numbers should be positive. Peak weights outside this band activate the configured tolerance alarm output(s). When a peak weight falls inside the tolerance band but does not equal the ideal weight, and if a tolerance adjustment has been setup, the t-sp value is adjusted (see Tolerance Adjustment page 64). Analogue Comms Locations 249 t-hi 250 t-lo Read/Write Displayable range (see page 24) Issue D 63

89 An Example of the Tolerance Band Tolerance Adjustment Default: 0.00% Defines the adjustment made to the tolerance band's position when a new peak weight is displayed. The top and bottom of the tolerance band are expressed as weight deviations relative to the tolerance band setpoint (t-sp) so the adjustment is made to the t-sp in order to move the whole band. The adjusted t-sp is used after the next trigger. An Example of Automatic Tolerance Setpoint Adjustment The adjustment is expressed as a percentage of the difference between the ideal weight and the measured peak weight. The direction of the adjustments is the same as the error. This lets the instrument accommodate gradual changes such as material density. t-adj may range from 0.00 to %. Values above 10% are not recommended Issue D

90 Eg: t-sp setpoint = 100Kg Peak weight = 110Kg t-adj = 1% Error = 10Kg 1% of error = 0.1Kg new t-sp setpoint = Kg In operation, the instrument works with a copy of t-sp, so t-sp remains the original ideal. Editing t-sp or resetting the instrument, resets the working copy to the ideal (see Reset page 67). Analogue 251 Comms Location Read/Write Tolerance adjustment range (%) 0.00 to Tolerance Band Setpoint Adjustment Limits This menu defines limits to how far the t-sp (tolerance band setpoint) can be moved. It also defines which outputs are activated when any limit is reached. Without these limits, the setpoint could gradually be adjusted down to zero and without any alarm. If a change to the t-sp (or a change to the limits) takes the t-sp outside the limits, the working copy of the t-sp is automatically changed to equal the limit that was violated, and the limit alarm output is activated. Once a limit has been reached, further peak measurements can still move the t-sp back within limits and clear the limit alarm outputs. This menu is not applicable on instruments with no outputs. Tolerance Limit Outputs Default: ---4 (if fitted) Defines the output(s) activated when any t-sp (tolerance band setpoint) adjustment limit is reached. Each illuminated digit position may be a digit or a hyphen. Digits indicate outputs that are enabled. For example ---4 indicates Output 4 is activated when a t-sp adjustment outside the limits is attempted. The flashing digit/hyphen can be edited with the Up/Down Keys. The Next Key is used to advance to the next output position Issue D 65

91 Check used outputs are not unintentionally used by alarms or controls. Logic Comms Locations Read/Write Logic On enables Output Off disables Output High/Low Tolerance Adjustment Limits Defaults: High 110, low 90 Define the maximum and minimum limits of adjustment to the t-sp (tolerance band setpoint). These limits are expressed as straightforward weights, not as deviations from a setpoint. High should be greater than t-sp and low should be less than t-sp. Analogue Comms Locations 252 HigH 253 LoW Read/Write Displayable range (see page 24) Time-out An Example of the Tolerance Setpoint Limits Default: 0/disabled Defines the maximum time the instrument will wait for a trigger (see Trigger page 60) before activating the tolerance alarm output(s) and returning the display to continuous weight monitoring. Continuous weight monitoring stops again as soon as another trigger occurs. The tolerance alarm is cleared if the peak captured after the trigger is within tolerance. Time-out may range from 0 to 255 seconds. 0 disables it so that when there is no trigger, the last peak remains displayed and the tolerance alarm Issue D

92 output remains unchanged. Analogue 254 Comms Location Time-out integer range (seconds) 0 to 255 Read/Write Reset Peak picking can be reset by activating a status input or function key that has been setup to perform the reset function (see Reset pages 94 & 98). Repowering the instrument also resets peak picking. Reset turns off any peak picking alarms, clears any adjustments made to the t-sp (tolerance band setpoint), displays 0.0, and makes the instrument wait for another trigger. Logic Comms Locations Logic On 37 Resets only peak picking (Write-Only) 115 Enables closing Status Input 1 to reset (see page 94) 128 Enables closing Status Input 2 to reset (see page 94) 138 Enables pressing Function Key 1 to reset (see page 98) 146 Enables pressing Function Key 1 to reset (see page 98) Issue D 67

93 Configuring the Automatic Zeroing Function This menu sets up automatic zeroing. It zeros the weight display at regular intervals so long as the measured weight is close to zero (see Deviation High & Low page 69). Automatic Zero Menu Map From the Configuration Menu (see page 22) Automatic zeroing is optional. When an automatic zero is performed, the display flashes ZErO 2 seconds after it has zeroed to confirm correct operation. When the instrument is repowered, the zero correction is lost, but automatic zeroing resumes with a new zero correction. Manual zeroing can also be performed at any time via a status input or function key (see Zero page 94) Issue D

94 An Example of Automatic Zeroing Enable on enables the automatic zeroing feature. Default: Off Logic 250 Comms Location On Off Enables automatic zeroing Disables automatic zeroing Read/Write Deviation High & Low Default: 5 Specify how close to zero the displayed weight must be for the indicator to perform an automatic zero. They are the respective weight deviations above and below zero. Weights within this band will be zeroed. Typical values for high and low deviation would be less than 5% of the full scale weight. Both values must be entered as positive numbers. Any weight in the displayable range can be entered. Over time, the zero correction added or subtracted to the measured weight to achieve zero, can become larger than the high or low deviation because corrections are repeatedly applied to weights previously corrected. This may warrant larger deviations than originally estimated to ensure Issue D 69

95 automatic zeroing keeps working if the load cell has developed a large cumulative offset and the instrument is repowered. Analogue Comms Locations Read/Write 227 devh Displayable range (see page 24) 228 devl Displayable range (see page 24) Delay Time Between Zeroing Default: 10 seconds Defines how often an automatic zero is attempted. This may range from 0 to 9999 seconds. When 0, the interval will be less than one second. When 9999, the interval will be 2 hours 46 minutes and 39 seconds. The display will not flash ZErO more often than once every 2 seconds. Analogue 229 Comms Location Read/Write Integer delay range (seconds) 0 to Issue D

96 Configuring & Using Parts Count Mode The PArt option in the KEy1 (Function Key 1) or KEy2 (Function Key 2) menus must be on to enable part counting (see Part Count page 99). This sets up one function key to prompt for a number of parts as described below. The other function key should be setup to zero the displayed weight (see Configuring Function Keys page 97). The instrument normally displays weight. Pressing a part count function key allows the user to specify a number of parts corresponding to the weight, and from that point onwards, the instrument shows the number of parts corresponding to the weight. Procedure Display Units 1 Ensure nothing is on the load cell and/or use the [0.0] Kg ZErO function key to zero the displayed weight. 2 Count a small number of equally heavy parts and [0.2] Kg place them on the load cell. 3 Press the PArt count function key. The display [00010] Parts shows (flashes) a number of parts waiting to be edited and accepted. The integer range is 0 to The default setting is 10. (0 returns the display to weight. The Star Key clears the display to 0). (flashes) 4 Edit the number of parts so it equals the number of [00010] Parts parts on the load cell. Press the Enter Key to accept. 5 The measurement display now shows the number of parts on the load cell. As more are added, the display shows the part count. [ 10] Parts Logic Comms Locations 141 On Off 149 On Off 120 On Off 133 On Off Enables part count on Function Key 1 Disables part count on Function Key 1 Enables part count on Function Key 2 Disables part count on Function Key 2 Enables Status Input 1 to toggle parts/load display Disables Status Input 1 parts/load display Enables Status Input 2 to toggle parts/load display Disables Status Input 2 parts/load display Issue D 71

97 Configuring Alarms Instruments have 4 alarms. Alarms Menu Map From the Configuration Menu (see page 22) Issue D

98 Each alarm can be high or low acting or a deviation alarm. When an alarm occurs: An optional message can be displayed. Outputs may be optionally activated. Care should be taken to ensure the same outputs are not unintentionally used by other facilities such as control, peak picking or another alarm. Type Sets the alarm type: Default: None none Alarm disabled. dev Deviation alarm. LoW Low acting alarm. HigH High acting alarm. When a deviation alarm type is chosen, the options devh and devl (see Deviation High & Low page 69) appear after SP (see Setpoint below). A deviation alarm is activated when the measured weight falls outside a deviation band. The alarm setpoint plus the devh deviation weight represents the top of the deviation band and similarly, the alarm setpoint minus the devl weight deviation represents the bottom of the deviation band. A low/high alarm is activated when the measured weight falls below/rises above the respective setpoints. Analogue Comms Locations Read/Write Analogue Alarm Type 110 Alarm 1 0=High 1=Low 2=Deviation 3=None (disabled) 125 Alarm 2 0=High 1=Low 2=Deviation 3=None (disabled) 140 Alarm 3 0=High 1=Low 2=Deviation 3=None (disabled) 155 Alarm 4 0=High 1=Low 2=Deviation 3=None (disabled) Setpoint Default: 0.0 Specifies the alarm setpoint. The setpoint is ignored if the alarm type is none Issue D 73

99 A HigH alarm is activated when the measured weight is higher than the setpoint. A LoW alarm is activated when the measured weight is lower than the setpoint. A dev (deviation) alarm is activated when the measured weight falls outside the deviation band. The top of the deviation band is at weight: SP + devh. The bottom of the deviation band is at weight: SP - devl. Therefore, moving the setpoint, moves the whole deviation band. SP can be any weight in the displayable range. Take care setting the display's decimal point position (see Displayable range page 24) as this can reduce the displayable range and leave the setpoint at an unreachable level. It is possible to setup the instrument so that the setpoints can be edited quickly from the front panel during normal operation. To access the edit facility, set the Edit option in the AL- (alarm) menu to on (see Front Panel Edit page 77). SP-3 (Setpoint 3) will always be the same as SP-1 (Setpoint 1) if L-SP for Alarm 3 is on. SP-4 (Setpoint 4) will always be the same as SP-2 (Setpoint 2) if L-SP for Alarm 4 is on (see Linked Setpoint page 77). SP-3 and SP-4 are used by the control facility to determine the idle-on (SP-4) and idle-off (SP-3) weights (see Idle page 55). When used in this way, Alarms 3 and 4 may be enabled or disabled. It is recommended that they are disabled, or they should be setup to activate no outputs that may conflict with the control process. Analogue Comms Locations Read/Write Analogue Setpoint for Alarm Integer range Displayable range (see page 24) Latching Default: Off on sets up the alarm to remain activated when the alarm condition has gone. Any output(s) and display message associated with the alarm stay latched too Issue D

100 When the alarm condition has gone, latched alarms can be cleared via a status input or key function (see Operator Mode - Key Functions page 15) to perform the ACk (acknowledge function) (see Alarm Acknowledge page 93). Latched alarms can be acknowledged by pressing the Up and Down panel Keys together. Logic Comms Locations Read/Write Logic On enables latching for Alarm Output Default: "----" (no outputs activated for all alarms) Defines optional output(s) activated when the alarm condition occurs. This option is only available on instruments with 2 relay outputs or 4 TTL (open collector) outputs. When setting up, each illuminated digit position may be a digit or a hyphen. Digits indicate enabled outputs. For example 1-3- enables Outputs 1 and 3 to be activated when the alarm occurs. The flashing digit/hyphen can be edited with the Up/Down Keys. Advance to the next output position with the Next Key. Only 2 digit positions are illuminated for instruments with 2 relay outputs. 4 digit positions are illuminated for instruments with 4 open-collector outputs. Check used outputs are not unintentionally used by other facilities including: control, peak picking or other alarms. Logic Comms Locations Read/Write On activates Alarm 1 Alarm 2 Alarm 3 Alarm 4 Output Output Output Output Delay Default: 0 seconds Define the time in seconds that an alarm condition must persist, ranging from 0 to 9999 seconds (see diagram page 77) Issue D 75

101 ondl (On-delay) defines the time an alarm condition must persist before the alarm is activated. ofdl (Off-delay) defines the time an alarm condition must be clear before the alarm is de-activated. Analogue Comms Locations Read/Write Alarm Range (seconds) On-delay to 9999 Off-delay to 9999 Hysteresis Default: 0.0 (for On and Off and all alarms) (See diagram page 77). onhy (On-hysteresis) defines how far a measurement must go beyond the activation level to activate the alarm. ofhy (Off-hysteresis) defines how far a measurement must go beyond the deactivation level to de-activate the alarm. The effect of hysteresis on a high alarm, is to raise the activation level by the on-hysteresis value and lower the deactivation level by the offhysteresis value. The effect of hysteresis on a low alarm, is to lower the activation level by the on-hysteresis value and raise the de-activation level by the offhysteresis value. The effect of hysteresis on a deviation alarm is to broaden the activation band by the on-hysteresis value and narrow the de-activation band by the off-hysteresis value. Hysteresis is normally used to prevent an alarm being activated and deactivated at high frequency when a noisy measurement dithers around a setpoint Issue D

102 Analogue Comms Locations Read/Write Alarm On-hysteresis Displayable range (see page 24) Off-hysteresis Displayable range (see page 24) Effect of Hysteresis and Delay on a High Alarm Linked Setpoint Alarms 3 & 4 Default: Off (both alarms) This option is useful for associating 2 alarms with the same setpoint. When invoked from the AL-3 (Alarm 3) menu, turning this option on, will make the Alarm 3 setpoint the same as the Alarm 1 setpoint. When invoked from the AL-4 (Alarm 4) menu, turning this option on, will make the Alarm 4 setpoint the same as the Alarm 2 setpoint. This option is useful for associating 2 alarms with the same setpoint. Logic Comms Locations Read/Write Logic On enables setpoint linking for Alarm 3 (to 1) 4 (to 2) Front Panel Edit Default: On for Alarms 1 & 2, off for Alarms 3 & 4 on allows setpoint editing from the front panel during normal operation. Press the Down Key to access the setpoint editor. A password Issue D 77

103 is never needed to access the setpoint editor. Logic Comms Locations Read/Write Logic On enables the setpoint editor for Alarm Message Display Default: On (for all alarms) on programs the instrument to determine and display a message when the alarm occurs during normal operation. Messages are 3 letters followed by the alarm number. The 3 letter codes are: HiA- High alarm. LOA- Low alarm. Hid- High deviation alarm. Lod- Low deviation alarm. Eg. HiA4 indicates high Alarm 4 has been activated. When more than one alarm is activated, messages are prioritised so the highest high alarm or the lowest low alarm is reported. Logic Comms Locations Read/Write Logic On enables message display for Alarm Issue D

104 Configuring Logic Outputs The options in this menu effect the way outputs work when activated by alarms, control and peak picking. For example, the pulsed option is useful for peak picking if its alarm outputs are connected to audible alarms. Logic Outputs Menu Map From the Configuration Menu (see page 22) Issue D 79

105 The outputs available depend on the instrument type: T243 - Has no outputs. (The O/P (output) menu is not displayed after AL-4). T244 - Has 2 single pole double throw relays (see Connections page 7 and Connecting the Logic Outputs page 14). T245 - Has 4 open collector outputs (see pages 7 & 14). The instrument type is displayed on power up, after the test display and software version. From the O/P menu, it is possible to reverse the sense of the relays or make them change state for a set time rather than for as long as the activation condition exists. Output Selection Menu Select the output to be setup. op-3 and op-4 are not available for instruments with 2 relay outputs. Sense Default: True (for all outputs) true programs the instrument so that the output is energised in the alarm state. FLSE ensures the output is de-energised in the alarm state. FLSE Might be used in a failsafe application so that power failure to the instrument or output results in the abnormal output state. Logic Comms Locations Read/Write Logic On sets type to true for Output Pulsed Operation Menu A pulsed output can be enabled and setup from this menu. Pulsed outputs should never be used with the control facility (see diagram page 41) Issue D

106 It should be noted that during operation: Once a pulse starts, it continues even if the original cause disappears. Maintaining the original cause of the pulse does not extend it. A second pulse occurs only if the original cause disappears and another one occurs after the end of the first pulse. Pulse Enable Default: Off (for all outputs) on enables pulsed output. off disables pulsed output. Pulsed outputs should never be used with the control facility (see diagram page 41). Logic Comms Locations Read/Write Logic On enables pulsed output for Output Pulse Duration Default: 0.5 seconds Defines the output pulse duration. It may range from 0.1 to 5.0 seconds. Analogue Comms Locations Read/Write Analogue For Output Integer range (seconds) 5 to 250 (20mS ticks) (eg. 50 = 1 second) Issue D 81

107 Configuring the Analogue Output This menu sets up the scaleable analogue retransmission. Analogue Output Menu Map From the Configuration Menu (see page 22) Issue D

108 Type Selects the output range from: Default: 4-20mA to 10V (volts) to 20mA to 20mA (milliamperes). Analogue 170 Comms Location Read/Write Integer value Sets output type 0 to 10V 0 to 20mA 4 to 20mA Source of Output Level Defines the source of the retransmission level from: inpt Measured weight. CoMM Serial comms interface. AV Average measured weight. LoW Lowest measured weight. HigH Highest measured weight. Default: Input Whatever the source, the value controlling the retransmission level should lie between the LoW and HigH settings declared next in the Aout (analogue output) menu (see Low & High Scaling page 84). For example, if LoW is 0 and HigH is 20, a source value of 10 will set the analogue output level to halfway up the output range. This would be 12mA when the Aout type is 4-20mA. InPt is the displayed weight, but before the display filters (Filt, LSd0 or neg) are applied (see Filtering, Least Significant Digit Zero and Negative Numbers page 26). CoMM requires values to be sent to the instrument via the serial interface. They should be stored in Analogue Location 175. They control the output level during normal operation. For example, sending ;001SA <CR><LF> sends 10 to Analogue Location 175. NOTE: When values have been sent via comms, the output will be Issue D 83

109 dependent on the values which have been sent for low and high scaling. The AV (average) measured weight is a simulated rolling average taken over the period specified by the AVti option in the SySt (system) menu (see Averaging Time page 101). The AV, HigH and LoW values are all reset to the current measured value on activating a status input or function key that has been setup to perform the reset function (see Reset pages 94 & 98). Analogue 171 Comms Location Read/Write Integer value Sets source to Input High Low Average Comm Low & High Scaling Default: Low 0, high 20 Define the analogue output source values which correspond to the maximum and minimum of the range for the analogue output type: Source: LoW to HigH Kg Outputs: 4mA to 20mA when type is: mA to 20mA when type is: V to 10V when type is: Analogue Comms Locations Read/Write Low High Range Both may be any value in the displayable range (see page 24) Damping Filter Default: 0 seconds Defines a time constant in seconds over which a simulated rolling average is applied to the analogue output. Longer times make the analogue output more stable but give the analogue output a slower step response. The time may range from 0 to 9999 seconds. 0 = off. Analogue 174 Comms Location Integer damping time (seconds) Read/Write 0 to =no damping Issue D

110 Configuring Serial Communications This menu sets up the instrument's RS485/422 communications interface. Serial Communications Menu Map From the Configuration Menu (see page 22) Issue D 85

111 The instrument can use 3 prototcols: ASCII Native (easy to use - no checksums). ASCII MODBUS Binary MODBUS RTU (JBUS). By default, instruments handle commands in either ASCII protocol. Instrument Address Default: 001 Defines a unique communications address for the instrument. It may range from 001 to 247. When more than one instrument is connected to a master via a multidrop bus, each instrument must have a different address. Unique addresses mean commands can be directed to one instrument. They also stop all instruments replying at the same time. A command is sent to a particular address by ensuring the address field in the command equals the address of the instrument the command is intended for: Eg. The command: ;001 SA <CR><LF> Addresses instrument 001 because the address field is 001. This command Stores to Analogue Location 175 the value 10. The instrument responds with OK<CR><LF> During normal operation, a master may send commands to address 000. This is a broadcast address used only for store commands (see page 115) such as the example above. Instruments obey but never reply to broadcasts. Analogue 182 Comms Location Read/Write Instruments communications address range 1 to 247 Baud Rate Sets the communications speed. Default: 9600bps Issue D

112 Analogue 183 Comms Location Read/Write Integer value Communications baud rate Protection Default: Off on protects the instrument's setup from any changes via the communications interface. off allows any analogue or logic location to be changed unless it is a read-only location. Logic 102 Comms Location On enables protection Read/Write Off disables protection Attempts to write to a protected or read-only location using the native protocol causes the instrument to reply with #2 (see Errors page 117). Parity Defines the parity setting for all communications. Default: Even Always set parity to none when rtu is on (see Remote Terminal Unit page 88). Analogue 184 Comms Location Read/Write Integer value Parity Odd Even None Stop Bits Defines the number of stop bits for all communications. Default: 1bit Always set stop bits to 1bit when rtu is on (see Remote Terminal Unit page 88). Logic 103 Comms Location On=2bits Off=1bit Read/Write Scaling (MODBUS only) Default: span 32k, L-ip 0, H-ip 100 Allow transmission of values normally outside Issue D 87

113 the range of MODBUS integers. SPAn defines the integer range used to transmit values ranging from L-ip to H-ip as follows: L-ip to H-ip Kg is transmitted as: 0.. to when SPAn is 32k. or: 0.. to when SPAn is 65.5k. or: 0.. to when SPAn is 32.7k. Analogue Comms Locations Read/Write 185 Span 0=32k 1=32.7k 2=65.6k 186 Low Any value in displayable range (see page 24) 187 High Any value in displayable range (see page 24) Remote Terminal Unit Default: Off on makes the instrument use only MODBUS rtu protocol. When the rtu is on: Parity must be set to none. Stop bits should be 1bit. Delay before transmission is ignored (see Transmit Delay below). MODBUS rtu is a binary protocol requiring 8 data bits per byte. Logic 104 Comms Location On enables rtu Read/Write Off disables rtu Transmit Delay Default: 0mS Defines a delay in milliseconds before the instrument replies to commands received over the communications interface. It is ignored if rtu is on. The delay is useful if there is difficulty handling the instrument's fast response to commands using a 2-wire (half duplex) connection. For example, this is likely if a simple program is being written in Visual Basic Issue D

114 under Windows to talk to the instrument via a 2-wire (half duplex) connection. Analogue 188 Comms Location Read/Write Integer value Delay before transmit (ms) Master Mode This menu sets up the instrument as a master. Masters transmit without being asked for data. Master Mode does not work when rtu (binary MODBUS ) is enabled. Instruments do not always respond to commands when Master Mode is on. A message is composed of: An optional prefix (";000SA016<space>" by default). A programmable number of values (1 by default), starting from a specified analogue location (2 by default), separated by commas. An end of line sequence <CR><LF>. Eg. ;000SA <CR><LF> Enabling the default Master Mode setup allows another instrument connected via comms to act as a remote display unit. The other instrument must be setup so the displayed value is sourced from comms (see Display Value Source page 25). Master Mode Enable Default: Off on enables Master Mode. Notice that Master Mode transmissions will not take place when enabled if the MASt option in a StA1/2 (status input) menu is on, and the status input(s) concerned are not activated (see Master Trigger/Enable via Status Input page 95). Logic 105 Comms Location On enables Master Mode Read/Write Off disables Master Mode Issue D 89

115 Interval Between Transmissions Default: 2 seconds Defines the number of seconds between each transmission from the instrument. 0 to 999 may be entered. 0 causes transmissions at the display update rate (2, 4 and 10Hz) (see Update Rate page 26). Analogue 192 Comms Location Read/Write Integer range (seconds) 0 to 999 (0=display update rate - see page 26) Source Analogue Location Default: 002 (displayed value) Defines the (first) analogue location transmitted. Analogue 189 Comms Location Read/Write Source Analogue Location (integer) 0 to 255 Locations to Transmit Default: 1 location Specifies the number of consecutive analogue locations to transmit, starting from the source analogue location defined above. 1 to 19 can be entered. Long messages at low baud rates can not be sent as fast as the display is updated. In these circumstances the messages are sent as fast as possible and they are never truncated. NOTE: A T220 instrument can only receive one location per message and this location must not be read-only. Analogue 190 Comms Location Read/Write Analogue Locations to transmit (integer) 1 to 19 Prefix Enable on enables the message prefix discussed above. Default: On Eg. Whole default message with prefix: ;000SA <CR><LF> Issue D

116 Whole default message with no prefix: <CR><LF> (see also Destination Location page 91). Logic 106 Comms Location On enables prefix Read/Write Off disables prefix Destination Location Default: 016 (display source) Defines the analogue location that the first value sent should be stored in by the receiving instrument. This analogue location number makes up the last 3 digits of the optional message prefix as underlined below: ;000SA016<space> 0 to 255 can be entered, but the valid range depends on the instrument receiving the message. The destination location can only receive one location per message and this location must not be read-only. Only 0 may be written to an unused location. Analogue 191 Comms Location Read/Write Destination Analogue Location in target (integer) 0 to Issue D 91

117 Configuring Status Inputs These menus allow the user to program the optional effects of activating Status Inputs 1 and/or 2 respectively. Status Inputs Menu Map From the Configuration Menu (see page 22) Many function key and status input effects are the same Issue D

118 Status Input 1 is activated by connecting Terminal 15 (Status 1) to Terminal 16 (common). Similarly, Status Input 2 is activated by connecting Terminal 14 (Status 2) to Terminal 16 (common). (See Connections page 7 and Connecting the Status Inputs page 13). Alarm Acknowledge Default: Off on programs the status input so that a momentary activation deactivates active latched alarms. Alarms only clear if the cause of the alarm no longer exists (see Latching page 74). Logic Comms Locations Read/Write Logic On enables alarm acknowledge Status Input 1 2 Off disables alarm acknowledge Alarm Disable Default: Off on programs the status input to disable Alarms 1 to 4 while the status input remains activated. Logic Comms Locations Read/Write Logic On enables alarm disable Status Input 1 2 Off disables alarm disable Display Default: None Selects one of several displays to be shown while the status input is activated. The choices are: none Display unchanged. No display function selected. LtSt Lamptest; all display segments light-up showing [ ]. AV Display the average weight over AVti (see page 101) and since last rset (see page 94). HigH Display the highest weight since last rset (see page 94). LoW Display the lowest weight since last rset (see page 94). HoLd Hold the displayed weight Issue D 93

119 Analogue Comms Locations Read/Write Analogue Status Range Input =None 1=Hold 2=Low 3=High 4=Average 5=Lamptest =None 1=Hold 2=Low 3=High 4=Average 5=Lamptest Reset Default: Off on programs the status input so that a momentary activation: Resets the HigH, LoW and AV values to the current display value. Resets the control and peak picking operations. Logic Comms Locations Read/Write Logic On enables reset function Status Input 1 2 Off disables reset function Disable Panel Keys Default: Off on programs the status input to disable the keys on the instrument panel while the status input remains activated. Logic Comms Locations Read/Write Logic On enables key lock function Status Input 1 2 Off disables key lock function Analogue Output Hold Default: Off on programs the status input to hold the analogue output level while the status input remains activated. Logic Comms Locations Read/Write Logic On enables analogue output hold Status Input 1 2 Off disables analogue output hold Zero Default: Off on programs the status input to zero the display when the status input is momentarily activated Issue D

120 When the display is zeroed, the value displayed becomes zero and the instrument displays weight changes since zeroing. Logic Comms Locations Read/Write Logic On enables zeroing function Status Input 1 2 Off disables zeroing function Tare Default: Off on programs the status input to tare the display. When the status input is first activated, the display is zeroed, normally to ignore the weight of a container. While the status input remains activated, the display shows only weight changes since it was zeroed. The display also flashes tare every 2.5 seconds. When the status input is de-activated, the display is restored to show total weight again. This tare is independent of the tare action used in control (see diagram page 45). Logic Comms Locations Read/Write Logic On enables tare function Status Input 1 2 Off disables tare function Part/Load Display Toggle Default: Off on programs the status input to make the display show parts when activated and weight (load) when de-activated. (See also Configuring & Using Parts Count page 71). Logic Comms Locations Read/Write Logic On enables parts/load toggle Status Input 1 2 Off disables parts/load toggle Master Trigger/Enable via Status Input Default: Off on causes activation of the status input to enable Master Mode transmissions, but only if Master Mode is also enabled via the CoMM, MASt, EnAb, on option (see Master Mode Enable page 89) Issue D 95

121 Notice that as soon as the status input is activated, a transmission occurs, and transmission timing is resynchronised to the event. So if the transmission rate is slow, a momentary closure of the status input contacts can be used as a single transmission trigger. Further transmissions occur only if the status input remains activated. If both status inputs are setup to activate Master Mode transmissions, only one need be activated to enable transmissions. Logic Comms Locations Read/Write 121 Status Input 1 On activation enables/triggers Master Mode 134 Status Input 2 Off activation enables/triggers Master Mode Status Message Display Default: On on causes the instrument to display the status messages listed below, every 2 seconds, while the status input stays active and it is setup to: ACk Acknowledge alarms. AdbL Disable alarms. AHLd Hold the analogue output. LoCk Lock the front panel keys. tare Tare the display. AV Display the average weight over AVti (see page 101) and since last rset (see page 94). HigH Display the highest weight since last rset (see page 94). LoW Display the lowest weight since last rset (see page 94). HoLd Hold the displayed weight. If an alarm is also active, and alarm messages are enabled, both alarm and status messages are displayed in sequence with the displayed value. Logic Comms Locations Read/Write Logic On enables status message display Status Input 1 2 Off disables status message display Issue D

122 Configuring Function Keys These menus allow users to program the optional effects of pressing Function Key 1 and Function Key 2. Function Keys Menu Map From the Configuration Menu (see page 22) Many function key and status input effects are the same Issue D 97

123 The following functions may be assigned to either or both keys unless stated: Reset on programs the function key to: Default: Off Reset the HigH, LoW and AV values to the current display value. Reset the control and peak picking operations. Logic Comms Locations Read/Write Logic On enables reset function Function Key 1 2 Off disables reset function Tare on programs the function key to tare the display as follows: Default: Off When this function key is first pressed, the display is zeroed, normally to ignore the weight of a container. The display continues to show only weight changes since zeroing, and flashes tare every 2.5 seconds. When the key is pressed again, the total unzeroed display is restored. This tare is independent of the tare used in control (see diagram page 45). Logic Comms Locations Read/Write Logic On enables tare function Function Key 1 2 Off disables tare function Zero on programs the function key to zero the display. Default: Off When the display is zeroed, the value displayed becomes zero and the instrument displays weight changes since zeroing. Logic Comms Locations Read/Write Logic On enables zero function Function Key 1 2 Off disables zero function Issue D

124 Part Count Load Cell & Weighing Indicators Setup Guide Default: Off on programs the function key to activate the part count function (see Configuring & Using Parts Count Mode page 71). Logic Comms Locations Read/Write Logic On enables part count function Function Key 1 2 Off disables part count function Master Trigger/Enable via Function Key Default: Off on causes the function key to trigger just one Master Mode transmission, but only if Master Mode is also enabled via the CoMM, MASt, EnAb, on option. (see Master Mode Enable page 89). Notice that as soon as the function key is pressed, a transmission occurs and transmission timing is resynchronised to the event. Logic Comms Locations Read/Write 142 Function Key 1 On key triggers Master Mode transmission 150 Function Key 2 Off key has no effect on Master Mode Display Default: None Selects one of various displays to be shown while the function key remains pressed. The choices are: none Display unchanged. No display function selected. LtSt Lamptest; all display segments light-up showing [ ]. AV Display the average weight over AVti (see page 101) and since last rset (see page 98). HigH Display the highest weight since last rset (see page 98). LoW Display the lowest weight since last rset (see page 98). HoLd Hold the displayed weight. Analogue Comms Locations Read/Write Analogue Function Range Key =None 1=Hold 2=Low 3=High 4=Average 5=Lamptest =None 1=Hold 2=Low 3=High 4=Average 5=Lamptest Issue D 99

125 Configuring System Options This menu configures system wide parameters and performs other miscellaneous actions. System Options Menu Map From the Configuration Menu (see page 22) Issue D

126 Password Load Cell & Weighing Indicators Setup Guide Default: (disabled) Defines an optional password. Its value may range from to If the password is not 00000, it is requested whenever the instrument enters the ConF (configuration) menu. Password prompts show only the value of one highlighted digit at a time. Other digits, represented by hyphens, can only be viewed and edited by moving the highlight to the digit concerned. This stops anyone seeing the whole password. DO NOT FORGET THE PASSWORD, OR THE INSTRUMENT SETUP CANNOT BE ACCESSED FROM THE PANEL. Averaging Time Default: 1 second Defines the time in seconds over which a simulated rolling average is taken. During normal operation, this average can be viewed by: a) Activating a status input or function key assigned the disp, AV function. b) Holding the Enter Key down when the AV option is reached in the LoW - HigH - AV - ConF menu (this menu is reached by holding the Enter Key down). (See also Filtering on page 26 and Reset on pages 94 & 98). Analogue 214 Comms Location Averaging time range (seconds) Read/Write 0 to performs no averaging at all Default Default is an action, not a setup item on defaults the instruments whole setup to the factory defaults shown in this manual in italics to the right of each setup item title. off leaves the instrument's setup unchanged. Logic 154 Comms Location On Write-Only Defaults the instrument's setup Issue D 101

127 Time-out Load Cell & Weighing Indicators Setup Guide Default: 60 seconds Specifies the maximum number of seconds the instrument will wait for a key press before it returns to normal operation from a ConF (configuration) sub-menu. Analogue 215 Comms Location Time-out range (seconds) 15 to 255 Read/Write The CAL (calibration) and SCLE (scale) sub-menus do not time-out. Reset Reset is an action, not a setup item on makes the instrument perform a power up reset. The instrument displays WAit for a moment while the hardware is reset, followed by the power on display sequence: Test display Version (eg.) Instrument type (eg.) t244. Logic 155 Comms Location On Resets the instrument Write-Only Tare Default: Off on allows the user to manually enter a tare value, in engineering units, from the front panel during normal operation. The manually entered tare value is subtracted from the realtime (gross) weight. From the normal runtime display, press the Down Key and the display will show tare. Press the Enter Key and the current tare value will be displayed in Edit Mode (editable digit will flash). Enter the required tare value (the container weight), press the Enter Key and the display will show tare again. Press the Up Key (or wait for the time out) and the display will show the tared value (the contents weight) NOTE: If the manual tare function is used, the tare parameter is displayed first when the Down Key is pressed. Repeated pressing of the Next Key Issue D

128 will also allow access to the 4 alarm setpoints and the 2 fill/loss of weight control function setpoints. NOTE: 1 Alarms and analogue transmission are linked to the display (tared) value, unless configured otherwise. 2 If the Tracker s zero function is used, the manual tare value will automatically be reset to zero. 3 If the Tracker s input is recalibrated or the scaling changed, the tare value is automatically set to zero. 4 The last tare value is retained after a power supply interruption. 5 The tare numeric range is to (decimal point position is set in the dp parameter of the disp (display) menu. 6 Modification of the tare value does not increment the seal security value. 7 Negative tare values which are entered will add to the displayed value (see also Note 8). 8 Negative sign is only selectable in the left, most significant digit (not normally used in this type of application). Analogue Comms Locations 48 Manual tare value Read/Write Logic 156 Comms Locations Read/Write On Enables the manual tare function and in realtime lists the tare option at the top of the setpoint edit menu (see NOTE on page 102). Off Disables the manual tare function and in realtime hides the tare option in the setpoint edit menu (see NOTE on page 102). Any tare offset is no longer subtracted from the realtime weight. Instrument Type Displays the instrument type: Type is an action, not a setup item t243 Weighing instrument with no logic outputs. t244 Weighing instrument with 2 relay outputs Issue D 103

129 t245 Weighing instrument with 4 open collector outputs (TTL). Analogue 0 Comms Location Read-Only Value may be 243, 244 or Issue D

130 Software Version Version is an action, not a setup item Displays the instrument's software version, eg PLEASE QUOTE THE SOFTWARE VERSION AND INSTRUMENT TYPE WHEN CONTACTING YOUR SUPPLIER WITH A QUERY. The instrument's serial number is useful too. The serial number may be seen to the right of the rightmost display digit through the tinted display filter. Analogue 9 Comms Location Version eg Read-Only Issue D 105

131 Product Specification Power Requirements 90V AC to 265V AC 50/60Hz, 20VA maximum. Operating Conditions Ambient temperature Humidity Display Type Storage -10 C to 70 C. Operating 10 C to 50 C. 10% to 95% RH non-condensing. Range to Input 14.7mm high brightness 7 segment LED red (optionally green). ADC Sigma Delta. Input ranges 20mV/V, 10mV/V, 4mV/V, 2mV/V. Resolution 18bit, 1µV per display digit. Accuracy 0.02%. Update rate 20 Hz. Input impedance >100MΩ. Common mode rejection >150dB. Series mode rejection 50/60Hz. Transducer Supply Range Output current Accuracy Output noise 10V DC. 135mA maximum (limited). typically ± 200mV. 30 Hz Issue D

132 Analogue Output Ranges 0 to 10V, 0 to 20mA or 4 to 20mA selectable. Accuracy 0.2% of span. Temperature drift <100ppm/ C. Output ripple <10mV or 30Hz. Response 63% within 32mS. 99% within 100mS. Resolution 0.05% of span, 5mV or 0.01mA. Maximum output 22mA. Isolation 500V. Alarm Relays (when fitted) Type 2 off changeover. Rating 250V. Logic Outputs (when fitted) Type 4 off optically isolated (common ground) open collector transistor outputs. Rating 20mA, 24V. Communications Interface Type Isolation EIA RS485 (RS422 compatible). 500V DC / Peak AC Issue D 107

133 Appendix A - Display Messages Power Up Messages Is displayed on power up when no load cell at all is connected to the instrument. It can also be displayed when the load cell(s) is/are wrongly connected (see Connecting the Load Cells page 10). Press a key to acknowledge before the instrument automatically resets again. The instrument displays undr or over. If the load cell wiring is subsequently corrected, reset the instrument. AdEr6 is also displayed if the instrument detects an internal hardware problem (internal zero reference appears too low). Indicates a load cell measurement hardware error on power up (internal zero reference appears too high). Press a key to acknowledge before the instrument automatically resets again. The instrument normally displays undr or over. Indicates a load cell measurement hardware error on power up (unable to take readings from ADC chip). The instrument automatically resets. Indicates a load cell measurement hardware error on power up (ADC chip reset unsuccessful). The instrument automatically resets. Indicate an error occurred accessing the instrument's memory. The unit should be returned to your supplier. Will not program eeprom. The instrument has lost its factory calibration constants in nonvolatile memory. Could be non-volatile memory failure. Return unit to factory Issue D

134 Out of Range Messages Indicates either: Displayed value is below displayable range (see Decimal Point Position page 24). The measured value is below the measurable range for the sensitivity of the input (see below). Indicates either: Displayed value is above displayable range (see Decimal Point Position page 24). The measured value is above the measurable range for the sensitivity of the setting (see below). Measurement range limits for different sensitivities are;- Sensitivity Measurement Range Up to 2mV/V -2 to +2mV/V >2 to 4mV/V -4 to +4mV/V >4 to 10mV/V -10 to +10mV/V >10 to 20mV/V -20 to +20mV/V If AUto Sensitivity is on (see Automatic Sensitivity Selection page 28), the sensitivity can be established by inspecting H-ip and L-ip in the SCLE (scale) menu after calibration and using whichever value is furthest from zero, ignoring the sign. Calibration Messages Calibration is discussed on page 32, but since it can be controlled without front panel intervention via comms, the messages are listed here: Prompt the user to apply low and high weights. errors. Are possible calibration Issue D 109

135 The action that started the calibration process should be repeated until none of these messages are displayed. This action might be pressing the Enter Key or setting Logic Location 25 to On via comms again. A power up reset aborts calibration. Alarm Messages Alarm messages are 3 letters followed by the alarm number. The codes are: High alarm. Eg. HiA4 indicates high Alarm 4 has been activated. Low alarm. High deviation alarm. Low deviation alarm. When more than one alarm is activated, messages are prioritised so the highest high alarm or the lowest low alarm is reported. (See also Message Display page 78) Issue D

136 Appendix B - Connecting the Serial Interface Four instrument Terminals: 10, 11, 12 and 13 are used for serial communications. These can be used to establish a 2-wire or 4-wire RS485 connection with a master device (usually a PC). The interconnecting wires are collectively known as a "BUS". A strict rule governs how the bus is routed. Obviously it must be connected from the master to one instrument, but if there is a second instrument, the bus should continue only from the terminals of the first instrument to the second. Similarly, if there is a third instrument, the bus should continue only from the terminals of the second instrument to the third, and so on. This is called a "multidrop bus". There should be no T- junctions in the bus. A 120Ω resistor should be connected between Terminals 10 and 11 on the last instrument furthest from the master. Half Duplex - 2-Wire Communications One of the bus wires must be connected to Terminals 10 and 12 of each instrument, and the other wire must be connected to Terminals 11 and 13 of each instrument as described above. A 2-wire bus can communicate in only one direction at a time. So the direction of communication is controlled by the master. Masters must: a) Know how to switch from transmit to receive (RTS goes low). b) Avoid switching to receive before transmit is finished. c) Avoid switching to receive after some/all of the reply is missed. For example, Windows Terminal transmits via a 2-wire bus okay, but the instruments' replies are not received because the Terminal does not know it should switch from transmit to receive, or how, or when. Full Duplex - 4-Wire Communications One bus wire must be connected to Terminal 10 of each instrument, the second wire to Terminal 11, the third wire to Terminal 12, and the fourth Issue D 111

137 wire to Terminal 13 of each instrument, as described above. One pair of wires is used for transmitting and the other pair listens. This avoids the problems of how and when to switch from transmit to receive as described above. 4-wire links are useful for experimenting with the Windows Terminal. The instruments have an RS485/RS422 compatible interface with the additional ability to release the instrument-to-master communication channel when not transmitting. This allows other instruments wanting to transmit to do so. PC Setup Program The program runs on a PC running Windows 3.1, 95 or NT4.0 or later. It transmits and receives whole setups between the PC and an instrument. The setups can also be saved and retrieved from disk. The program automatically adapts to a 2 or 4-wire bus. In order for the program to work, a converter enables communications between the Tracker and any PC or terminal with an RS232 serial port. Only a KK Systems K485-FD, wired as shown below or a KK Systems K2-ADE converter as shown on page 113, is recommended with the program. KK Systems K485-FD or any other K485 converter wired for 2-wire comms KK Systems K485-FD-4w K422 or K485-4w converter wired for 4-wire comms K485-FD Instrument Terminals Issue D

138 Connections are made via a 9-way D -type male connector and a 4-wire configuration cable. The D -type male connector marked RS232 plugs into the PC or terminal serial port and the 4 wires on the free end of the supplied cable connect to the Tracker s serial port. Plugs into the PC serial port ON DIP ADE 2 WIRE Connects to the Tracker 200 serial port K2-ADE Instrument The table below shows the connections necessary to interface your instrument to an RS232 port via the K2 RS485 to RS232 converter. Wire Colour Tracker 200 Terminal K2 9-way Pin Yellow 10 3 Green 11 8 Blue 12 7 Red 13 2 Note: For 2-wire operation, link Terminals 11 to 13 and 10 to 12. K2 Converter Switch Settings bps SW1 SW2 SW3 SW4 SW5 SW6 OFF OFF OFF ON OFF OFF Issue D 113

139 Note: For 2-wire operation (Tracker 221/222 or when using windows configuration software), set SW1 to ON. Note: Refer to the K2 Converter Setup Guide for communication speeds other than the Tracker s default of 9600 bps as SW4 to SW6 settings will change. KK Systems can be contacted by telephone on +44 (0) Issue D

140 Appendix C - Using the Native Communications Protocol Throughout this Guide, analogue and logic locations corresponding to setup parameters have been documented. These locations can be read and written to via the serial interface. All locations can be write-protected by setting Prot to on in the CoMM (communications) menu (see page 87). Some read-only locations, eg. the displayed value, can never be written to via comms. Listings in location order are given in the index. Command Structure Here is an example of a command sent to an instrument: ;001 SA 54 2<CR><LF> and here is the normal reply: OK<CR><LF> This is what each piece of the command does (and each piece must be present): ; Start of the command. 01 Instrument Address May range from 000 to 247. There must always be 3 digits. These 3 digits must match the instrument's address as setup in the CoMM, Addr (communications, address) menu. 000 can only be used in write commands to broadcast to all instruments simultaneously. <space> This space character after the address is optional. SA Action SA = Store Analogue SL = Store Logic RA = Read Analogue RL = Read Logic Issue D 115

141 54 Data Location May range 0 to 255. Some locations are not used. Unused analogue locations only read/write as Unused logic locations only read/write as off. <space> 2 Data For read commands RA and RL, this is the number of consecutive parameters to read from the instrument. For write commands, it is the data to be written. If more values follow, separated by spaces, these are written to consecutive data locations following the Data Location. If an error occurs during a multiwrite, only writes up to the error are completed. For logic writes only, the data may only be On or Off. Eg. ;001 SL 154 ON<CR><LF> <CR> <LF> End-of-line carriage return (ASCII 13 decimal). Linefeed (ASCII 10 decimal). Here is an example of a read command which reads 4 analogues from Location 0: ;001RA0 4<CR><LF> and here is the reply: ?99999<CR><LF> The?99999 indicates the value was over range.?19999 indicates a value is under range (see Troubleshooting Comms page 122) Issue D

142 Errors #1 Invalid command action, only SA, SL, RA, RL allowed. Check address field is 3 digits. Also check you have not used On or Off as data for a Store Analogue command. Ensure numeric data, eg. 0, or 1 has not been used in a Set Logic SL command. #2 Attempted a write to a read-only or protected location. Some locations are permanently read-only. However, this message also occurs for any location if the Prot option in the Comm menu has been turned on (see page 87). #3 Data location specified does not exist. Start location or number of locations could be invalid. #4 Invalid data value, or no space before the data value, or syntax error. #5 Attempt to change a location while instrument is in the ConF (configuration) menu. Instrument will normally exit from menu after one minute (default). #7 Attempted to write to a non-zero value to an unused location Issue D 117

143 Appendix D - Realtime Comms Locations Analogue Locations (RO indicates location can be Read-Only, RW indicates Read/Write) 0 RO Instrument type ie: or or & 38 RO Measured value (unfiltered, no LSd0, no neg). 2 & 39 RO Displayed value. 3 & 16 RO Source of displayed value when display sourced from comms (ie when Analogue Location 53 is 4 - see Display Value Source page 25). 5 RO Number of logic outputs fitted: 0, 2 (relays) or 4 (TTL's). 7 RO First 4 digits of serial number (eg indicates 9908). 8 RO Last 4 digits of serial number (eg indicates 0007). 9 RO Instrument software version (eg indicates version 0.58). 29 RO Zero offset in display units ( if display is not zeroed). 30 RO Tare offset in display units ( if display is not tared). 32 RO Test value incremented every 20mS by instrument. Resets at RO millivolts applied to Status 1 Input (0 to 5000mV 1% resolution). 34 RO millivolts applied to Status 2 Input (0 to 5000mV 1% resolution). 35 RO Low display value (minimum peak since reset - see Reset page 94). 36 RO High display value (maximum peak since reset - see Reset page 94). 37 RO Average display value (over AVti - see Averaging Time page 101) Issue D

144 Peak Picking Facility 40 RO Most recent peak picked weight. 41 RO Adjusted peak picking (working) setpoint. 42 RO Peak picking stage: 0 = waiting for trigger. 1 = waiting for delay after trigger to end. 2 = waiting for trigger to clear. Control Facility 43 RO ONGOING tared fill level as a weight. 44 RO Most recent final achieved tared weight. 45 RO Latest working corrected Setpoint RO Latest working corrected Setpoint RO Control stage: Control outputs 0 = waiting for empty vessel trigger both Off. 1 = waiting for end of delay after trigger both Off. 2 = waiting for level to pass Control Setpoint-1 1 On. 3 = waiting inflight material to land both Off. 4 = waiting for level to pass Control Setpoint-2 2 On. 5 = waiting for inflight material to land both Off. 6 = waiting for full vessel removal (load<trig.sp)both Off. Part Counting Facility 49 RW Parts factor: amount weight is multiplied by to give part count. 50 RW Number of parts entered at the PArt prompt (see Configuring & Using Parts Count Mode page 71). Logic Locations Status 6 RO State of Function Key 1 On = pressed (leftmost key). 7 RO State of Function Key 2 On = pressed (rightmost key). 8 RO State of Status Input 1 On = contacts closed. 9 RO State of Status Input 2 On = contacts closed. 10 RO State of Alarm 1 On = activated. 11 RO State of Alarm 2 On = activated. 12 RO State of Alarm 3 On = activated. 13 RO State of Alarm 4 On = activated Issue D 119

145 14 RO On = abnormal state of Output 1 (T244 or T245 only). 15 RO On = abnormal state of Output 2 (T244 or T245 only). 16 RO On = abnormal state of Output 3 (T245 only). 17 RO On = abnormal state of Output 4 (T245 only). 23 RO On if control facility is idle (see Idle 55). 24 RO Off indicates whole calibration process complete (see Logic Location 25 below). Commands 25 RW On Performs a calibration step. After turning On, read location repeatedly until Off (step done), then turn On again (next step) if Logic Location 24 is On too (more steps to perform). Low & high calibration weights should be applied to the load cell for the same steps that they are when CAL is performed from the panel (see Calibration Sequence page 32). 26 RW On acknowledges any/all active latched alarms. 27 RW On performs the reset function (see Reset pages 94 & 98). 28 RW On resets the high value (maximum peak) to the current display value. 29 RW On resets the low value (minimum peak) to the current display value. 30 RW On resets the average value to the current display value. 31 RW On Zeros display. 32 RW On Unzeros display (not recommended: use Tare/Untare instead). 33 RW On Tares display. 34 RW On Untares display. 35 RW On Recalculates parts factor (Analogue Location 49). Correct load must be on load cell and Analogue Location 50 must represent the number of parts on the load cell. 36 RW On Displays part count, Off displays weight. 37 RW On Clears adjustments made to peak picking tolerance band position. Clears any active peak picking alarms Issue D

146 200 RW On Triggers control process delay. Tare & fill occur next. 201 RW On Clears corrections made to control process Setpoints 1 & 2. Turns Off both feeder outputs Issue D 121

147 Appendix E - Troubleshooting Comms 1. When using 2-wire comms with a KK Systems' converter on a PC serial port, it is necessary to: a) Assert the RS232 RTS output in order to TRANSMIT. b) Send the command and monitor its progress in order to: i) Clear the RTS immediately after the <LF> has been sent, and ii) Only then, read the reply from the instrument. 2. When checking for an OK response, look for K anywhere in the response and not just in a set position. Garbage can precede it. 3. When a reply is out of range, the first character is a question mark. 4. Early evaluation instruments have comms Terminals 10 and 11 and Terminals 12 and 13 the wrong way round. These are "Issue B" instruments. The revision letter can be seen by removing the circuit from its case and looking along the back edge of the circuit board. 5. If you are having difficulty with comms, try sending a command which resets the instrument, such as: ;001 SL 155 ON<CR><LF> This way, it is possible to tell if the instrument is receiving okay even if it cannot transmit. This may narrow down the possible reasons for the problem. This test can be performed using Windows Terminal (not Hyperterminal). Terminal will never be able to show responses from the instrument if connected in 2-wire mode. In this case, if the above test passes, it is likely comms between instrument and PC are okay. Terminal must be setup to match the instrument comms setting which defaults to: Issue D

148 Communications: Baud: Parity: Even. Stop bits: 1. Parity check: [Yes]. Comm port: (As applicable). Flow control: None. Terminal Preferences: CR CR/LF outbound, enabled 6. The most common comms problems are: a) Connected to the wrong comm port or not connected at all! b) Setup mismatch. Baud, parity, stop bits different. Make sure the address in the command match the COMM, Addr of the instrument. If using MODBUS RTU, ensure Parity = none, Stop bits = 1. c) Incorrect wiring. Wires of a pair the wrong way round; whole set of 4 wires shifted along one terminal position; terminals not screwed up tightly, wire dropped off fragile home-made cable. d) RTS (at master RS232 end) not asserted when master transmits, or cleared when master is to receive (2-wire comms). e) Comms converter has inadequate supply. Self powered converters require DTR to be high. If laptop used, ensure POWER.EXE is DISABLED. f) 120Ω resistor not fitted across Terminals 10 and 11 of last instrument in daisy chain. NOTE: The instruments' use of the MODBUS protocol differs from the norm in that there is no requirement to subtract one from a data location accessed. Eg. If x is the data location to access, specify location x and not x Issue D 123

149 Appendix F - Tracker Fast Start Wire the load cell as shown below. The load cell wiring above shows a 6-wire connection.. If sense wires are not available from the load cell (4-wire system), link Terminals 9 to 23 and Terminals 8 to 24. NOTE: On early models, Terminals 23 to 26 were marked incorrectly on the top label (polarity reversed). There are 2 methods of scaling configuration: Method A: Method B: Scaling the Tracker to calibration values supplied with the load cell. Scaling and calibrating the Tracker using known loads or weights. All configuration is by use of the front panel buttons. There are no internal potentiometers, jumpers or links. To enter the ConF (configuration) menu, press and hold the Enter button (second from right) until LoW is displayed. Use the scroll key (far left) until ConF is displayed. Press the Enter Key and disp, the first configuration sub-menu, is displayed Issue D

150 Method A 1. In the inpt (input) menu set the SEn (sensitivity) parameter to the mv/v value shown on the calibration certificate supplied with the load cell. (Leave the AUto parameter set to off). The following parameters are set in the SCLE (scale) menu: 2. Set HdSP (high display) value to the full range of the load cell in the engineering units required. 3. Set LdSP (low display) value to the lowest measured value (which is normally Zero). 4. Set H-iP (high input) value to the mv/v value shown on the calibration certificate supplied with the load cell (which should be the same value entered in 1. above). 5. Set L-iP (low input) value to the mv/v value for the lowest measured value (normally zero). Exit the configuration menus and the Tracker should be displaying the correct value to one decimal place. If the resolution needs to be increased or decreased, enter the configuration menus and enter the disp (display) menu. Alter the dp (decimal point) parameter value to select required resolution. Example A1 Calibrating a 0-6Kg load cell with a mV/V sensitivity. The customer requires the display to show grams to a resolution of 1 gram (eg g). DISPLAY MENU dp = 0 (no decimal places). INPUT MENU AUto = Off SEn = (allows the Tracker to select the optimum input gain) Issue D 125

151 SCALE MENU HdSP= 6000 LdSP= 0 H-iP = L-iP = 0 Load Cell & Weighing Indicators Setup Guide Example A2 Calibrating a 0-6Kg Load cell with a mV/V sensitivity. The customer requires the display to show Kg to a resolution of 1gram (eg Kg). DISPLAY MENU dp = 3 (three decimal places). INPUT MENU AUto = Off SEn = SCALE MENU HdSP= 6 (can also be entered as 6.0, 6.00, or ). LdSP= 0 H-iP = L-iP = 0 Method B 1. In the inpt (input) menu set the SEn (sensitivity) parameter to the mv/v value shown on the calibration certificate supplied with the load cell. (Leave the AUto parameter off). 2. Enter the CAL (calibration) menu and the display will show L-iP. Set the load cell to the minimum calibration weight (normally zero - no weight or load) and press Enter. The display will show WAit (wait) while the Tracker measures the output from the load cell. The measured value is stored and the display shows H-iP. 3. Place a known calibration weight or load on the load cell and press enter. Again the display will show WAit and store the measured Issue D

152 signal value. The display will return to CAL when the calibration is complete. The following parameters are set in the SCLE (scale) menu. 4. Set HdSP (high display) value of the load cell calibration (high point) in the engineering units required. 5. Set LdSP (low display) value to the lowest calibration value (which is normally zero). Exit the configuration menus and the Tracker should be displaying the correct value to one decimal place. If the resolution needs to be increased or decreased, enter the configuration menus and enter the disp (display) menu. Alter the dp (decimal point) parameter value to select required display resolution. Example B1 Calibrating a 0-6Kg load cell with a mV/V sensitivity. The customer requires the display to show grams to a resolution of 1 gram (eg g). The two calibration points will be at 0 and 5Kg. DISPLAY MENU dp = 0 (no decimal places). INPUT MENU AUto = Off SEn = (allows the Tracker to select the optimum input gain). SCALE MENU HdSP = 5000 (the chosen high calibration weight). LdSP = 0 (the chosen low calibration weight). H-iP = (this mv/v value "read" by the Tracker during the H-iP CAL sequence). L-IP = (this mv/v value "read" by the Tracker during the L-iP CAL sequence) Issue D 127

153 Questions What if the sensitivity (mv/v) value of the load cell(s) is not known? Method B calibration must be used. In the inpt (input) menu turn the AUto parameter on. During the CAL sequence the Tracker will automatically select the optimum gain for the two calibration points selected. The high calibration value should equal to or higher than the actual measurement range required in service. Do I need to enter the configuration menus to re-calibrate the system? If Method B calibration is used and the same two calibration points are used then a front panel function button or a status (logic) input can be configured to trigger the calibration sequence. Can I use an external power supply for the load cell excitation? An external 10V DC power supply can be used as long as the sense wires are connected. The sense wires will compensate for any variation in the power supply voltage output and for best results they should be wired as close to the load cells as possible Issue D

154 Index A Load Cell & Weighing Indicators Setup Guide Alarms Configuration...72 Delay...75 Front Panel Edit...77 Hysteresis...76 Latching...74 Linked Setpoint...77 Message Display...78 Output...75 Setpoint...73 Type...73 Analogue Output Configuration...82 Damping Filter...84 Low & High Scaling...84 Source of Output Level...83 Type...83 Analogue Retransmission...3 Automatic Zero Configuration...68 Delay Time Between Zeroing...70 Deviation High & Low...69 Enable...69 C Calibration Sequence...32 Command Structure Comms Locations Analogue system options instrument type Analogue system options software version Analogue system options tare value Analogue display value source...26 Analogue display decimal point position...24 Analogue display update rate...26 Analogue display filtering Issue D 129

155 Analogue display brilliance Analogue damping filter value Analogue input load cell sensitivity Analogue user linearization number of points Analogue scaling low display value Analogue scaling low input Analogue scaling high display value Analogue scaling high input Analogue 077, 079, 081, 083, 085, 087, 089, user linearization display values Analogue 078, 080, 082, 084, 086, 088, 090, user linearization input values Analogue 110, 125, 140, alarm type Analogue 111, 126, 141, alarm setpoints Analogue 114, 115, 129, 130, 144, 145, 159, alarm delay Analogue 116, 117, 131, 132, 146, 147, 161, alarm hysteresis Analogue analogue output type Analogue analogue output level source Analogue 172, analogue output low & high scaling Analogue analogue output damping filter Analogue serial communications instrument address Analogue serial communications baud rate Analogue serial communications parity Analogue 185, 186, serial communications scaling Analogue serial communications transmit delay Analogue serial communications source analogue location Analogue serial communications locations to transmit Analogue serial communications destination location Analogue serial communications interval between transmissions Analogue 197, status inputs display Analogue 206, function keys display Analogue system options averaging time Analogue system options time-out Analogue 219, 221, 223, logic output pulse duration Analogue 227, automatic zero deviation high & low Analogue automatic zero delay time Analogue control define trigger level Analogue control trigger delay Issue D

156 Analogue control setpoint Analogue control setpoint 1 correction...50 Analogue control setpoint Analogue control setpoint 2 correction...52 Analogue control inflight time...52 Analogue control time-out...56 Analogue control damping filter...54 Analogue peak picking level trigger type...61 Analogue peak picking level trigger setpoint...61 Analogue peak picking delay after trigger...62 Analogue peak picking tolerance setpoint range...63 Analogue 249, peak picking tolerance band high & low deviations...63 Analogue peak picking tolerance adjustment range...65 Analogue 252, 253 peak picking high & low tolerance adjustment limits...66 Analogue peak picking time-out...67 Analogue system options tare value Logic calibration sequence remote operations...34 Logic calibration sequence remote operations...34 Logic 037, 115, 128, 138, peak picking reset...67 Logic scaling changes...35 Logic user linearization enable...38 Logic display font...27 Logic display leading zero suppression...27 Logic display least significant digit zero...26 Logic display negative numbers...27 Logic input automatic sensitivity selection...28 Logic 061, 062, 063, 064, 071, 072, 073, 074, 081, 082, 083, 084, 091, 092, 093, alarm outputs...75 Logic 065, 075, 085, alarm latching...75 Logic 066, 076, 086, alarm front panel edit...78 Logic 067, 077, 087, alarm message display...78 Logic 088, alarm linked setpoint...77 Logic serial communications protection...87 Logic serial communications stop bits...87 Logic serial communications remote terminal unit...88 Logic serial communications enable master mode...89 Logic serial communications prefix enable Issue D 131

157 Logic 112, status inputs tare function Logic 113, status inputs alarm acknowledge Logic 114, status inputs alarm disable Logic 115, status inputs reset Logic 116, status inputs disable panel keys Logic 117, status inputs analogue output hold Logic 118, status inputs zero Logic 119, status inputs message display Logic 120, part count enable on status inputs toggle...71, 95 Logic 121, status inputs master mode enable Logic 138, function keys reset Logic 139, functions keys tare Logic 140, function keys zero Logic 141, part count enable on function keys toggle...71, 99 Logic 142, function keys master mode trigger Logic system options default Logic system options reset Logic system options tare Logic 160, 165, 170, logic output sense Logic 161, 166, 171, logic output pulse enable Logic control enable functions Logic control type Logic 204, 205, 206, 207, control triggers Logic control enable trigger by level Logic control status inputs & trigger level Logic 210, 211, 212, 213, 214, control idle triggers Logic 216, 217, 218, control main feed outputs Logic 220, 221, 222, control trickle feed outputs Logic control enable safe fill Logic peak picking enable Logic 230, 231, 232, 233, 234, 235, 236, 237, 238, peak picking display update triggers Logic 240, 241, 242, peak picking tolerance alarm output Logic 244, 245, 246, peak picking tolerance limit outputs Logic automatic zero enable Communications Interface... 3 Communications Interface Connections Configuration Menus Connections Issue D

158 Control Configuration...41 Damping (Fill Mode Only)...52 Enable...47 Idle (Loss of Weight)...55 Inflight Time (Fill Only)...52 Level Menu (Fill Control Only)...48 Main Feed Parameters...49 Output (Main Feed)...49 Output (Trickle Feed)...51 Safe Fill...54 Sequence Start...47 Setpoint Setpoint 1 Correction (Fill Mode Only)...50 Setpoint Setpoint 2 Correction (Fill Mode Only)...52 Time-out...56 Trickle Feed Parameters...51 Trigger...47 Trigger Delay...49 Type...47 D Display Brilliance...27 Configuration...23 Decimal Point Position...24 Display Value Source...25 Displayable Range...24 Editing Out of Range Values...24 Filtering...26 Font...27 Leading Zero Suppression...27 Least Significant Digit Zero...26 Messages Alarm Calibration Out of Range Power Up Issue D 133

159 Negative Numbers Test Update Rate E Errors F Failsafe Full Duplex - 4-Wire Communications Function Keys Configuration Display Master Trigger/Enable via Function Key Part Count Reset Tare Zero H Half Duplex - 2-Wire Communications I Input Automatic Sensitivity Selection Configuration Damp Damping Values Editing Out of Range Values Load Cell Sensitivity Installation... 4 Introduction... 3 K Key Functions L Load Cell Connections Logic Outputs Issue D

160 Configuration...79 Connections...14 Output Selection Menu...80 Pulse Duration...81 Pulse Enable...81 Pulsed Operation Menu...80 Sense...80 M Mains Supply Connections...9 Menu Maps Alarms...72 Analogue Output...82 Automatic Zero...68 Calibration...32 Configuration...22 Control... 42, 44 Display...23 Function Keys...97 Logic Outputs...79 Peak Picking... 57, 58 Scale...35 Serial Communications...85 Status Inputs...92 System Options User Linearization...37 N Navigating the Configuration Menus...20 O Operator Functions...15 Editing a Value...19 Menu Mode - Key Functions...17 Operator Mode - Key Functions...17 Selecting a Setting from a List...18 P Panel Mounting Issue D 135

161 Parts Count Configuration PC Setup Program Peak Picking Configuration Delay after Trigger Enable High/Low Tolerance Adjustment Limits Level Trigger Level Trigger Setpoint Reset Time-out Tolerance Adjustment Tolerance Alarm Tolerance Alarm Output Tolerance Alarm Setpoint Tolerance Band - High & Low Deviations Tolerance Band Setpoint Adjustment Limits Tolerance Limit Outputs Trigger Type of Level Trigger Powering the Instrument... 9 Product Specification Alarm Relays Analogue Output Communications Interface Display Input Logic Outputs Operating Conditions Power Requirements Transducer Supply Protocols MODBUS...3, 25, 86, 87, 88, 89, 123 Native Communications Protocol Q Questions Issue D

162 R Load Cell & Weighing Indicators Setup Guide Realtime Comms Analogue Locations Logic Locations Rear Panel...7 Relay Output...3 S Scaling Configuration...35 High Display Value...35 High Input...36 Low (Zero) Display Value...36 Low Input...36 Seal...16 Serial Communications Baud Rate...86 Configuration...85 Destination Location...91 Instrument Address...86 Interval Between Transmissions...90 Locations to Transmit...90 Master Mode...89 Master Mode Enable...89 Parity...87 Prefix Enable...90 Protection...87 Remote Terminal Unit...88 Scaling...87 Source Analogue Location...90 Stop Bits...87 Transmit Delay...88 Serial Interface Connections Setpoint Working - Control Setpoint Working - Peak Picking Status Inputs Alarm Acknowledge...93 Alarm Disable Issue D 137

163 Analogue Output Hold Configuration Connections Disable Panel Keys Display Master Trigger/Enable via Status Input Part/Load Display Toggle Reset Status Message Display Tare Zero System Options Averaging Time Configuration Default Instrument Type Password Reset Software Version Time-out T Terminals...4, 7, 8, 9, 11, 93, 111, 122, 123, 124 Tracker Fast Start Troubleshooting Comms U User Linearization Configuration Display Values Enable Input Values Number of Points Issue D

164 TRACKER 240 SERIES Load Cell and Weighing Indicators Issue - October 2002 A Precision Measurement Instrument with Outstanding Features Ratiometric Measurement Tare and Auto Zero Transducer Excitation Supply Max / Min Memory Isolated Analogue Output Digital Status Inputs In-Flight Compensation Part Counting And Peak Picking Adjustable Display Resolution Universal Power Supply Serial Communications Alarm and Control Outputs Transducer Excitation Supplies 10Vdc (or 20 volts dc for use with I.S. barriers) fully drift compeniated. 6 Wire Ratiometric Input for maximum measurement precision. Tough but Attractive The enclosure uses flame retardant (VO) materials and the front conforms to IP65. Clear Display The flat recessed five digit display together with high brightness LED s ensure maximum visibility even in difficult lighting conditions. Universal Power Input Wide ranging 90 to 265Vac input allows worldwide installation. A low voltage 24Vac/dc input option is available. The Tracker 240 series of digital panel indicators are designed specifically for use with load cell Transducers and for weighing applications. All the Tracker 240 series models have a 5 digit display and transducer supply plus many software features including tare, offset zeroing, in-flight compensation, peak picking and extensive alarm functions. As standard the Tracker 240 series are fitted with an analogue output and an RS 422/ 485 Communications interface to allow connection to data loggers, chart recorders, PLCs and computers. All models have the same specification except that the T244 has two relay outputs to control external devices and the Tracker 245 has four TTL logic outputs. The displayed value can be in tonnes, litres, grams or any other engineering unit. The Tracker 240 series can be used in conjunction with up to four 300 Ohm load cells, and uses a 6-wire ratiometric measurement technique. Power for the load cells can be provided from the internal regulated supply or from an external supply. UK / Europe / USA Office Tel: +44 (0) Fax: +44 (0) s - info@omniinstruments.co.uk King Street,Broughty Ferry, Dundee, Scotland UK. DD5 1EW Web Site: Australia / Asia Pacific Office Tel +61 (0) Fax +61 (0) info@omniinstruments.com.au PO Box 105, Leederville Western Australia, 6902

165 TRACKER 240 SERIES Applications Issue - October 2002 Fill and (optional) Trickle Feeder Control The Tracker 240 series relay or TTL outputs can be used to control filling of a container which is placed on a single load cell or on multiple load cells wired in parallel. The container weight can be compe sated for by using the Tare or Zero function. The Tracker 240 controls the (high speed) feed device and, at a user definable point during the filling, switches off the high speed fill and switches on an optional Trickle (low speed) feed to achieve an accurate total fill weight. (See also in-flight compensation below.) Loss of Weight/ Discharge Control This feature calculates the loss of weight of the feeder reservoir, rather than measuring the weight of the vessel that is being filled. Again both a fast feeder and an optional trickle feeder system may be used. The Tracker 240 will measure and control, by use of a logic or relay output, the loss of a pre-set weight of product to the container to be filled. Alarm outputs can also be used to indicate if the reservoir tank is too low or full. The fill command can be entered externally via a logic input, or by pressing a front panel function button. Automatic In-Flight Compensation In-flight compensation allows the filling system to switch off the filler valve before the correct weight has been reached. This may be required if some of the product could be delivered for a time after the filler control valve has been switched off. The In-flight compensation can be applied to both the main feed and trickle feed controls outputs. Peak Picking This useful feature allows filled containers to be checked for weight, an alarm being activated if the weight falls outside pre-set limits. To eliminate false peak values being displayed due to the load being dropped on to the load cells, a delay can be set before the measurement is displayed and the alarms become operational after crossing a defined threshold level. This delay is programmable between zero (off) and 10 seconds to 0.1 second resolution. The measured value is displayed until the next load is weighed. Alarms are only active while a load is being weighed and after the delay period. Learn Function A learning function allows the Tracker 240 series to automatically correct the in-flight compensation, so increasing the accuracy of the delivered weight. This compensation is particularly useful when the product's flow rate characteristics change, perhaps due to variations in moisture or temperature. The learn system constantly adjusts the switching point to optimise for changing product condition. Auto Setpoint Adjustment For the peak picking application described above, there may be a slight change in the overall weight of the product over time. This may be due to slight differences in the container weight, for example. If a slight error from the setpoint value is seen, the setpoint can be automatically adjusted in a similar way as described in the in-flight learn feature described opposite. If an alarm is activated (due to the weight being out of limits) the setpoint correction is ignored for that measurement cycle. Limits can be set to inhibit the maximum amount of setpoint correction that can occur. Automatic Zeroing Band Function Due to the hysteresis of some load cells, the measured value may not return to exactly zero when a load is removed. This function allows the user to set an error band around zero where the Tracker 240 will automatically initiate a zeroing of the measured value, if the reading is within the pre-set band. The error band can be set to any displayable value, and high and low limits can be individually entered. The automatic zeroing band function is repeated as long as the measured value is within the pre-set band, and removes the need to manually zero the instrument before the next load is measured. The time period between zeroing is user selectable. Part Count Function A part count function can be enabled by using a status (logic) input or a front panel push button. The Tracker 240 is used to weigh a single part or known number of parts, this measured value is then used to calculate the total number of parts in a batch. UK / Europe / USA Office Tel: +44 (0) Fax: +44 (0) s - info@omniinstruments.co.uk King Street,Broughty Ferry, Dundee, Scotland UK. DD5 1EW Web Site: Australia / Asia Pacific Office Tel +61 (0) Fax +61 (0) info@omniinstruments.com.au PO Box 105, Leederville Western Australia, 6902

166 TRACKER 240 SERIES Features Issue - October 2002 Display The user can configure the Tracker 240 series for the required Engineering units and display resolution. The resolution is user configurable for 1, 2, 5 and 10 digits. This can be useful if a steady reading is difficult to achieve. Normally the full resolution would be displayed. For noisy signals an independent display filter is provided. The user can select the display update rate to be 2, 4 or 10 per second, and the brightness can be adjusted to suit ambient lighting conditions. Digital Status (Logic) Inputs Two logic inputs are provided to allow remote control of the indicator functions via external devices such as switches or PLCs. The inputs may be activated by volt free contacts or open collector TTL outputs. The two inputs can be individually programmed by a user to perform one or more of the following functions:- Calibration Scaling and User Linearisation Calibrating the Tracker 240 series to load cells can be achieved in one of two ways. Values from the strain gauge can be entered manually or the Tracker can read the actual output from the transducer at two points in the range, normally at zero and another point near the maximum load to be measured. These measured values are stored with their associated display values as the calibration parameters. For more demanding applications, up to 8 points can be independently calibrated to compensate for transducer non linearity. Front Panel Function Keys The five front panel buttons can be used to set up a unit by stepping through a simple password protected menu. In addition the two front panel function buttons are marked and can be individually programmed by a user to give operator level access to one or more of the following functions. Tare Zero Part Count Display Hold Display Maximum (Peak) Display Minimum (Valley) Display Average Display Reset (Peak Picking Mode) Display Test (Lights all Display Segments) Keyboard Lock Alarm (Latch) Reset Alarm Disable Analogue Output Hold Reset Max, Min and Average Start Fill Alarm Menus Alarms can be flashed on the display along with the measured value. The user can individually configure the following parameters for each of the our alarm menus:- High, Low or Deviation Alarm Action High and Low Band Limits (Deviation Action Only) On and Off Delay Timers On and Off Hysteresis Latching or Non-Latching Normal or Pulsed Output Modes Setpoint Adjustment (During normal running or only via password protected menus) Tare Zero Part Count Display Hold Display Maximum (Peak) Display Minimum (Valley) Display Average Display Reset (Peak Picking Mode) Reset Max, Min and Average Display Test (Lights all Display Segments) Start Fill Analogue Output The user programmable analogue output allows the Tracker 240 series to transmit the measured display value or the Maximum, Minimum, Average, or a value sent via the serial interface. The analogue output can be scaled for any portion of the display range and is configurable for 4-20mA, 0-20mA or 0-10 Volt signals. Electrical isolation ensures that problems with earth loops are avoided. Serial Communications The Tracker 240 series are equipped with an isolated RS422/ 485 serial communications interface to allow connection to computers or PLCs. Three protocols are provided as standard to allow easy integration with most SCADA packages. The user can select Master Mode to allow digital transmission to a remote Repeater display or printer. RS232 canbe supplied instead of RS422/ consult your supplier. When filling modes are selected, Digital (TTL/ Relay) outputs 1 and 2 are automatically assigned. Sensor Connections The Tracker 240 series use a 6-wire ratiometeric method of measurement. Up to four 300 ohm load cells can be connected in parallel. More can be used if the resistance is higher (e.g. 8 x 600 ohm load cells) and the total current does not exceed 120mA at 10Vdc. An external 10Vdc supply can be used, if required, still retaining the ratiometric measurement capability. Normally the transducer connections would be wired as shown. UK / Europe / USA Office Tel: +44 (0) Fax: +44 (0) s - info@omniinstruments.co.uk King Street,Broughty Ferry, Dundee, Scotland UK. DD5 1EW Web Site: Australia / Asia Pacific Office Tel +61 (0) Fax +61 (0) info@omniinstruments.com.au PO Box 105, Leederville Western Australia, 6902

167 TRACKER 240 SERIES Features Issue - October 2002 Smart Filter Often plant vibration can effect the measured values and make the display appear noisy. The Tracker 240 has a smart filter that samples the noisy signal from the load cells and then calculates a filter band value. When in use, the filter is only applied when the measured value rate of change is within the filter band. To allow a fast response for real change of signal the filter is turned off until the signal rate of change is again within the filter band limits. The Tracker stores the highest and lowest reading taken from approx. 100 samples to determine the noise amplitude. The filter band is then calculated using the max/ min stored values from the sampling period. The filter band can also be manually adjusted or turned off. Serial Communications A RS485 Serial interface is fitted as standard on all Tracker 240 models. Optionally a RS232 interface can be fitted (at extra cost) instead of RS485. The main applications are shown below. The combination of a Tracker 240 and an HMI, fitted with a Modbus compatible RS485 interface, becomes a powerful stand-alone batch control system and recipe selection system. The HMI s display and function buttons can be tailored for any application and language. Many HMI units can also be a gateway for Fieldbus connection (e.g. Profibus, Device Net). A single HMI can communicate with up to 32 Tracker 240 units. UK / Europe / USA Office Tel: +44 (0) Fax: +44 (0) s - info@omniinstruments.co.uk King Street,Broughty Ferry, Dundee, Scotland UK. DD5 1EW Web Site: Australia / Asia Pacific Office Tel +61 (0) Fax +61 (0) info@omniinstruments.com.au PO Box 105, Leederville Western Australia, 6902

168 TRACKER 240 SERIES Configuration Issue - October 2002 Technical Specification Display Range: to Type: Red (standard) or green LED 14.7mm high Measurement resolution: User selectable (decimal point) Update rate: Selectable 2, 4 or 10 per second Resolution: Selectable 1, 2, 5 or 10 digits Input ADC Type: Sigma delta, 18 bit resolution (1 part in 262, 144) Measurement mode: Ratiometric Range: 0.5 to 20mV per Volt Connection: 6 wire - 2 x excitation, 2 x sense, 2 x signal Accuracy: Better than 0.02% of reading Measurement rate: 20 per second Input impedance: >100M... Common mode rejection: >150dB Series mode rejection: >70dB Transducer Supply Output Regulated 120mA ( To power up to 4 x 300.Load cells wired in parallel ) A 20Vdc output can be supplied for use with I.S. barriers -consult with supplier Digital Outputs Tracker 244 only - 2 off, single change over (form C) contacts rated at 240Vac, 30Vdc Tracker 245 only - 4 off, TTL open collector Outputs can be energised or de-energised in the alarm condition or configured to give a pulse output Function Keys and Status (Logic) Inputs Functions can be user assigned to two of the front panel buttons and the two digital inputs. The digital inputs can be switched by external volt free contacts or TTL signals. Analogue Output Isolation: 500Vdc/ Peak ac Output: User selectable 0-10V, 0-20mA or 4-20mA Scaling: User scaling to any displayable value Accuracy: Better than 0.2% Temperature drift: <100 ppm per 0 C Response: 63% within 32mS, 99% within 100mS Resolution: 0.05% (5mV or 0.01mA) Maximum voltage output: 22mA Maximum current output: 18V Maximum load: Programmable output damping filter Power Requirements Universal 90 to 265Vac, 50 or 20VA nominal Optional 24Vdc/ ac supply Environmental Temperature: 10 to 50 0 C operating -10 to 70 0 C storage Humidity: 10 to 95% RH non condensing Physical/ Mechanical Dimensions: 48mm (H) x 96mm (W) x 173mm (D) Panel cut-out: 44mm (H) x 92mm (W) Depth behind panel: 166mm including terminals Weight: 0.4kg, (0.55kg packed weight) Safety and EMC Safety: EN61010 Susceptibility: EN & 2 Emissions: To EN & 2 EN50022 Class A for radiated and conducted CE Certified 1997 Ordering Code Serial Communications Type: RS 422/ 485, 2 or 4 wire multidrop Isolation: To 500Vdc/ Peak ac Speed: 1200, 2400, 4800, 9600 baud. Parity: Odd, even or none. Stop bits: 1 or 2 Protocols: MODBUS RTU (J-BUS), MODBUS ASCII and DTPI (Data Track Process Instruments) in master or slave mode. Tracker 240 indicators have been tested and comply with the European Electromagnetic Compatibility Directives And safety requirements. The units are CE Marked Model Number Supply Display Colour Model Number: 243 Load Cell Indicator 244 Load Cell Indicator with Dual Alarm Relays 245 Load Cell Indicator with Quad TTL Alarm Outputs Supply: Vac 2. 24Vdc/ ac Display Colour: R Red (Standard) G Green (Option) Example: G Tracker 244 Load Cell Indicator with Dual Alarm Relays, Mains Powered and Green Display. UK / Europe / USA Office Tel: +44 (0) Fax: +44 (0) s - info@omniinstruments.co.uk King Street,Broughty Ferry, Dundee, Scotland UK. DD5 1EW Web Site: Australia / Asia Pacific Office Tel +61 (0) Fax +61 (0) info@omniinstruments.com.au PO Box 105, Leederville Western Australia, 6902

169 The Handbook of GeoPeripherals 4

170 Chapter 3 WF Load Ring & LSC-HS

171

172

173

174

175 Calibration of LSC HS10/9962 GeoLab-GIO-25 March 2004-MASTECH 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2263x + 0,0255 R 2 = 1,0000 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

176 Calibration of LSC HS10/9962 GeoLab-GIO-25 March 2004-PCI ,0 10,0 y = 0,2271x + 0,0532 R 2 = 1,0000 Displacement [mm] 8,0 6,0 4,0 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

177 Calibration of LSC HS10/9962 GeoLab-GIO-25 March 2004-MASTECH 12,0 10,0 y = 0,2263x + 0,0271 R 2 = 1,0000 Displacement [mm] 8,0 6,0 4,0 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

178 Calibration of LSC HS10/9962 GeoLab-GIO-25 March 2004-PCI ,0 10,0 y = 0,2271x + 0,0578 R 2 = 1,0000 Displacement [mm] 8,0 6,0 4,0 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

179 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, MASTECH 12,0 10,0 y = 0,2252x + 0,6191 R 2 = 0,9996 Displacement [mm] 8,0 6,0 4,0 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

180 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, PCI 6024E 12,0 10,0 y = 0,2364x + 0,5422 R 2 = 0,9999 Displacement [mm] 8,0 6,0 4,0 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

181 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, MASTECH 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2358x + 0,5558 R 2 = 0,9999 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

182 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, PCI 6024E 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2259x + 0,6065 R 2 = 0,9997 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

183 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, MASTECH 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2259x + 0,5485 R 2 = 1,0000 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

184 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, PCI 6024E 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2263x + 0,5523 R 2 = 1,0000 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

185 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, MASTECH 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2258x + 0,5505 R 2 = 1,0000 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

186 Calibration of LSC HS10/9962 GeoLab-GIO-15 June 2004, PCI 6024E 12,0 Displacement [mm] 10,0 8,0 6,0 4,0 y = 0,2262x + 0,5523 R 2 = 1,0000 2,0 0,0 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 Voltage [mv]

187 The Handbook of GeoPeripherals 6

188 Chapter 4 Schlumberger Lateral Strain Transducer 7

189

190 The Handbook of GeoPeripherals 8

191 Chapter 5 KERN 440 Compact Scale 9

192 440 Laboratory Balances Standard Adjusting program (CAL): for quick setting of the balance s accuracy. External adjusting weight required. Piece counting: reference quantities selectable. Display can be switched from piece to weight. Data interface: RS 232 C, bidirectional, for connection of printer or PC. Net-total weighing: weight of tare-cup and weight of components memorized in two separate stores. Percentage determination: Displays the deviation from the reference weight (100%) in % instead of grammes. GLP/ISO record keeping of weighing data with date, time and ident.-no. Only with printers from KERN. UNIT: Weighing units can be switched to e.g. non-metric units at the touch of a key. See balance model. Mains adapter: 230 V / 50 Hz. Standard type D, if requested also available in standard GB, AUS or USA. Option (addit. price) Accu-supply: rechargeable set. KERN Your DKD Calibration Partner issues DKD calibration certificates for balances and test weights in its own accreditated laboratories. It is internationally valid. KERN is manufacturer of test weights in the international classes of accuracy E1, E2, F1, F2, M1, M2, M3, from 1 mg up to 2000 kg Your specialist dealer ZEP_EP_440_GB_051 DKD = German Calibration Service KERN & SOHN GMBH Postfach D Balingen Telefon [0] Telefax [0] info@kern-sohn.com Internet: GB

193 440 Laboratory Balances KERN Your DKD Calibration Partner issues DKD calibration certificates for balances and test weights in its own accreditated laboratories. It is internationally valid. KERN is manufacturer of test weights in the international classes of accuracy E1, E2, F1, F2, M1, M2, M3, from 1 mg up to 2000 kg Your specialist dealer ZEP_EP_440_GB_051 DKD = German Calibration Service KERN & SOHN GMBH Postfach D Balingen Telefon [0] Telefax [0] info@kern-sohn.com Internet: GB

194 440 Technical Data Measurement data N N N N Reproducibility 0,001g 0,01g 0,01g 0,1g Linearity +/-0,003g +/-0,02g +/-0,03g +/-0,2g Stabilisation time (s) Sensity drift ( C) 66*10^-6 66*10^-6 66*10^-6 66*10^-6 Verifcation data Verification class Verification value Minimum load Verification in the factory possible Ambient conditions Permissible temperature C C C C Permissible humidity max. 80% max. 80% max. 80% max. 80% (not condensating) (not condensating) (not condensating) (not condensating) Piece counting Minimum weight 0,002g 0,02g 0,02g 0,2g Reference quantity 5, 10, 25, 50 5, 10, 25, 50 5, 10, 25, 50 5, 10, 25, 50 Basic equipment Protective working cover Yes Yes Yes Yes Accumulator Option: external, Option: external, Option: external, Option: external, 230h operation time 230h operation time 230h operation time 230h operation time without back-lit, without back-lit, without back-lit, without back-lit, 9h charging time 9h charging time 9h charging time 9h charging time Battery-supply 9V, 12h operation time 9V, 12h operation time 9V, 12h operation time 9V, 12h operation time Auto-Off In battery mode In battery mode In battery mode In battery mode after 3min after 3min after 3min after 3min Stand-by Mains adapter EURO, UK, US, AUS, EURO, UK, US, AUS, EURO, UK, US, AUS, EURO, UK, US, AUS, (DC 9V/300mA, (DC 9V/300mA, (DC 9V/300mA, (DC 9V/300mA, minus inside) minus inside) minus inside) minus inside) Filter steps Type of balance display LCD LCD LCD LCD Digit height of balance display 15mm 15mm 15mm 15mm Levelling feet, level indicator Weighing units g, oz, ozt, ct, tlh, tlt, g, kg, oz, ozt, lb, ct, g, oz, ozt, lb, ct, tlh, g, kg, lb, oz, ozt, tlh, gn, dwt, mo, tol tlh, tlt, gn, dwt, mo, tol tlt, gn, dwt, mo, tol tlt, dwt, mo, tol Freely programmable weighing units Internal adjusting weight External test weight, included 20g (F2) 100g (M1) 200g (F2) 200g (M3) Recommended adjusting weight Explosion protection Dimensions / materials / weights Dim. of weighing plate (WxDxH / Ø, mm) x130 Dimensions of terminal (WxDxH, mm) Dimensions of casing (WxDxH, mm) 165x230x80 165x230x80 165x230x80 165x230x80 Material of casing Plastic Plastic Plastic Plastic Dim. of draught guard (WxDxH / ØxH, mm) 90x Material of draught guard Plastic Dimensions of packaging (WxDxH, mm) 340x200x x200x x200x x200x140 Gross weight (kg) 1,6 1,6 1,6 1,7 Net weight (kg) Important notes:! Our balances are not suitable for use in areas of high humidity or where there is a danger of explosion for models with protection class < IP 65.! All relevant electrical regulations must be observed.

195 440 Technical Data Measurement data N N N N Reproducibility 0,1g 0,1g 0,1g 1g Linearity +/-0,2g +/-0,2g +/-0,3g +/-2g Stabilisation time (s) Sensity drift ( C) 66*10^-6 66*10^-6 66*10^-6 66*10^-6 Verifcation data Verification class Verification value Minimum load Verification in the factory possible Ambient conditions Permissible temperature C C C C Permissible humidity max. 80% max. 80% max. 80% max. 80% (not condensating) (not condensating) (not condensating) (not condensating) Piece counting Minimum weight 0,2g 0,2g 0,2 g 2g Reference quantity 5, 10, 25, 50 5, 10, 25, 50 5, 10, 25, 50 5, 10, 25, 50 Basic equipment Protective working cover Yes Yes Yes Yes Accumulator Option: external, Option: external, Option: external, Option: external, 230h operation time 230h operation time 230h operation time 230h operation time without back-lit, without back-lit, without back-lit, without back-lit, 9h charging time 9h charging time 9h charging time 9h charging time Battery-supply 9V, 12h operation time 9V, 12h operation time 9V, 12h operation time 9V, 12h operation time Auto-Off In battery mode In battery mode In battery mode In battery mode after 3min after 3min after 3min after 3min Stand-by Mains adapter EURO, UK, US, AUS, EURO, UK, US, AUS, EURO, UK, US, AUS, EURO, UK, US, AUS, (DC 9V/300mA, (DC 9V/300mA, (DC 9V/300mA, (DC 9V/300mA, minus inside) minus inside) minus inside) minus inside) Filter steps Type of balance display LCD LCD LCD LCD Digit height of balance display 15mm 15mm 15mm 15mm Levelling feet, level indicator Weighing units g, kg, lb, oz, ozt, tlh, g, kg, oz, ozt, lb, tlh, g, kg, lb, oz, ozt, tlh, g, kg, oz, ozt, lb, tlt, dwt, mo, tol tlt, dwt, mo, tol tlt, dwt, mo, tol tlh, tlt, dwt, mo, tol Freely programmable weighing units Internal adjusting weight External test weight, included 500g (M2) 1000g (M1) 2000g (M1) 1000g (M3) Recommended adjusting weight Explosion protection Dimensions / materials / weights Dim. of weighing plate (WxDxH / Ø, mm) 130x x x x170 Dimensions of terminal (WxDxH, mm) Dimensions of casing (WxDxH, mm) 165x230x80 165x230x80 165x230x80 165x230x80 Material of casing Plastic Plastic Plastic Plastic Dim. of draught guard (WxDxH / ØxH, mm) Material of draught guard Dimensions of packaging (WxDxH, mm) 340x200x x200x x200x x200x140 Gross weight (kg) 2 2,5 3,5 3,5 Net weight (kg) Important notes:! Our balances are not suitable for use in areas of high humidity or where there is a danger of explosion for models with protection class < IP 65.! All relevant electrical regulations must be observed.

196 440 Technical Data Measurement data N N Reproducibility 1g 0,2g Linearity +/-2g +/-0,6g Stabilisation time (s) 2 3 Sensity drift ( C) 66*10^-6 66*10^-6 Verifcation data Verification class - - Verification value - - Minimum load - - Verification in the factory possible - - Ambient conditions Permissible temperature C C Permissible humidity max. 80% max. 80% (not condensating) (not condensating) Piece counting Minimum weight 2g 0,4g Reference quantity 5, 10, 25, 50 5, 10, 25, 50 Basic equipment Protective working cover Yes Yes Accumulator Option: external, Option: external, 230h operation time 230h operation time without back-lit, without back-lit, 9h charging time 9h charging time Battery-supply 9V, 12h operation time 9V, 12h operation time Auto-Off In battery mode In battery mode after 3min after 3min Stand-by - - Mains adapter EURO, UK, US, AUS, EURO, UK, US, AUS, (DC 9V/300mA, (DC 9V/300mA, minus inside) minus inside) Filter steps - - Type of balance display LCD LCD Digit height of balance display 15mm 15mm Levelling feet, level indicator - - Weighing units g, kg, oz, ozt, lb, tlh, g, oz, ozt, lb, tlh, tlt, tlt, dwt, mo, tol dwt, mo, tol Freely programmable weighing units - - Internal adjusting weight - - External test weight, included 1000g (M3) 1000g (M1) Recommended adjusting weight - - Explosion protection - - Dimensions / materials / weights Dim. of weighing plate (WxDxH / Ø, mm) 150x x170 Dimensions of terminal (WxDxH, mm) - - Dimensions of casing (WxDxH, mm) 165x230x80 165x230x80 Material of casing Plastic Plastic Dim. of draught guard (WxDxH / ØxH, mm) - - Material of draught guard - - Dimensions of packaging (WxDxH, mm) 340x200x x200x140 Gross weight (kg) 3,5 4 Net weight (kg) 1 1 Important notes:! Our balances are not suitable for use in areas of high humidity or where there is a danger of explosion for models with protection class < IP 65.! All relevant electrical regulations must be observed.

197 GB KERN 440 Version /2004 Operating Instructions Precision balance Tabel of contents: 1 Technical data 30 2 Declaration of conformity 34 3 Fundamental information (general) Intended use Inappropriate use Guarantee Monitoring the test substances 36 4 Fundamental safety information Observe the information in the operating instructions Staff training 36 5 Transport and storage Acceptance check Packaging 36 6 Unpacking, installation and commissioning Place of installation, place of use Unpacking Installation List of items supplied Mains supply Battery Operation Connecting peripheral equipment Initial start-up Adjustment Adjusting Underfloor weighing 40

198 7 Operation Overview of display Weighing Taring Plus / Minus Weighings Piece counting Gross-total Weighings Percentage weighing Weighing units Rear illuminated display 45 8 Settings Menu structure: Dosage und Zero-tracking Select the adjusting weight RS 232 C Data output via interface RS 232 C Data transfer mode Baudrate 48 9 Interface RS 232 C Technical Data Description of the jack Description of the data transfer Pr PC AU Pr AU PC re Cr Maintenance, upkeep, disposal Cleaning Maintenance, upkeep Disposal Troubleshooting BA-defsi

199 1 Technical data KERN N A N Readout 0,001 g 0,001 g 0,01 g Weighing range 40 g 60 g 200 g Taring range (subtractive) 40 g 60 g 200 g Reproducibility 0,001 g 0,001 g 0,01 g Linearity ±0,003 g ±0,004 g ±0,0 2 g Min. weight for counting parts 0,002 g 0,002 g 0,02 g Reference pieces for counting parts 5, 10, 25, 50 Unites details Weighing units capture 7.8 Test weight (included) The details can be found in capture 8.3 Select the adjusting weight Stabilisation time (typical) Optimal temp. of operation Humidity 20g (F2) 50g (F2) 100g (M1) 3 sec C C max. 80 % (non-condensing) Size (W x D x H) mm 165 x 230 x 80 Weighing plate mm Ø 65 Ø 65 Ø 105 Weight kg (net) 1,0 1,0 1,0 Underfloor weighing - - Standard Hook for underfloor weighing - - Option BA-defsi-0433

200 KERN N A N N Readout 0,01 g 0,01 g 0,1 g 0,1 g Weighing range 400 g 600 g 400 g 1000 g Taring range (subtractive) 400 g 600 g 400 g 1000 g Reproducibility 0,01 g 0,01 g 0,1 g 0,1 g Linearity ±0,03 g ±0,04 g ±0,2 g ± 0,2 g Min. weight for counting parts 0,02 g 0,02 g 0,2 g 0,2 g Reference pieces for counting parts 5, 10, 25, 50 Unites details Weighing units capture 7.8 Test weight (included) The details can be found in capture 8.3 Select the adjusting weight Stabilisation time (typical) Optimal temp. of operation Humidity 200g (M1) 200g (M1) 200 g (M3) 500 g (M2)) 3 sec C C max. 80 % (non-condensing) Size (W x D x H) mm 165 x 230 x 80 Weighing plate mm Ø 105 Ø x x 130 Weight kg (net) 1,0 1,0 1,0 1,0 Underfloor weighing Hook for underfloor weighing Standard Option 440-BA-defsi

201 KERN N N A Readout 0,1 g 0,1 g 0,1 g Weighing range 2000 g 4000 g 6000 g Taring range (subtractive) 2000 g 4000 g 6000 g Reproducibility 0,1 g 0,1 g 0,1 g Linearity ± 0,2 g ± 0,3 g ± 0,4 g Min. weight for counting parts 0,2 g 0,2 g 0,2 g Reference pieces for counting parts 5, 10, 25, 50 Unites details Weighing units capture 7.8 Test weight (included) The details can be found in capture 8.3 Select the adjusting weight Stabilisation time (typical) Optimal temp. of operation Humidity 1000 g (M1) 2000 g (M1) 2000 g (M1) 3 sec C C max. 80 % (non-condensing) Size (W x D x H) mm 165 x 230 x 80 Weighing plate mm 130 x x x 170 Weight kg (net) 1,0 1,0 1,0 Underfloor weighing Hook for underfloor weighing Standard Option BA-defsi-0433

202 KERN N N N Readout 1 g 1 g 0,2 g Weighing range 4000 g 6000 g 6000 g Taring range (subtractive) 4000 g 6000 g 6000 g Reproducibility 1 g 1 g 0,2 g Linearity ± 2 g ± 2 g ± 0,6 g Min. weight for counting parts 2 g 2 g 0,4 g Reference pieces for counting parts 5, 10, 25, 50 Unites details Weighing units capture 7.8 Test weight (included) The details can be found in capture 8.3 Select the adjusting weight Stabilisation time (typical) Optimal temp. of operation Humidity 1000 g (M3) 1000 g (M3) 1000 g (M1) 3 sec C C max. 80 % (non-condensing) Size (W x D x H) mm 165 x 230 x 80 Weighing plate mm 150 x x x 170 Weight kg (net) 1,0 1,0 1,0 Underfloor weighing Hook for underfloor weighing Standard Option 440-BA-defsi

203 2 Declaration of conformity KERN & Sohn GmbH D Balingen-Frommern Postfach Konformitätserklärung Tel: 0049-[0] Fax: 0049-[0] Internet: Declaration of conformity for apparatus with CE mark Konformitätserklärung für Geräte mit CE-Zeichen Déclaration de conformité pour appareils portant la marque CE Declaración de conformidad para aparatos con marca CE Dichiarazione di conformità per apparecchi contrassegnati con la marcatura CE English Deutsch Français Español Italiano We hereby declare that the product to which this declaration refers conforms with the following standards. Wir erklären hiermit, dass das Produkt, auf das sich diese Erklärung bezieht, mit den nachstehenden Normen übereinstimmt. Nous déclarons avec cela responsabilité que le produit, auquel se rapporte la présente déclaration, est conforme aux normes citées ci-après. Manifestamos en la presente que el producto al que se refiere esta declaración est a de acuerdo con las normas siguientes Dichiariamo con ciò che il prodotto al quale la presente dichiarazione si riferisce è conforme alle norme di seguito citate. Electronic Balance: KERN 440 Mark applied EU Directive Standards 89/336EEC EMC EN : 1998+A1 : 2000 EN : 2000 EN : 1995+A1 : 2001 EN : 1998+A1 : 2001 Date: Signature: Gottl. KERN & Sohn GmbH Management Gottl. KERN & Sohn GmbH, Ziegelei 1, D Balingen, Tel. +49-[0]7433/9933-0,Fax +49-[0]7433/ BA-defsi-0433

204 3 Fundamental information (general) 3.1 Intended use The balance you have acquired serves to determine the weighing value of the material to be weighed. It is intended to be used as a non-automatic balance, i.e. the material to be weighed is manually and carefully placed in the centre of the weighing plate. The weighing value can be read off after a stable weighing value has been obtained. 3.2 Inappropriate use Do not use the balance for dynamic weighing. In the event that small quantities are removed or added to the material to be weighed, incorrect weighing results can be displayed due to the stability compensation in the balance. (Example: Slowly draining fluids from a container on the balance.) Do not leave a permanent load on the weighing plate. This can damage the measuring equipment. Be sure to avoid impact shock and overloading the balance in excess of the prescribed maximum load rating (max.), minus any possible tare weight that is already present. This could cause damage to the balance. Never operate the balance in hazardous locations. The series design is not explosion-proof. Structural alterations may not be made to the balance. This can lead to incorrect weighing results, faults concerning safety regulations as well as to destruction of the balance. The balance may only be used in compliance with the described guidelines. Varying areas of application/planned use must be approved by KERN in writing. 3.3 Guarantee The guarantee is not valid following non-observation of our guidelines in the operating instructions use outside the described applications alteration to or opening of the device mechanical damage and damage caused by media, liquids,natural wear and tear inappropriate erection or electric installation overloading of the measuring equipment 440-BA-defsi

205 3.4 Monitoring the test substances The metrology features of the balance and any possible available adjusting weight must be checked at regular intervals within the scope of quality assurance. For this purpose, the answerable user must define a suitable interval as well as the nature and scope of this check. Information is available on KERN s home page ( with regard to the monitoring of balance test substances and the test weights required for this. Test weights and balances can be adjusted quickly and at a reasonable price in KERN s accredited DKD calibration laboratory (return to national normal). 4 Fundamental safety information 4.1 Observe the information in the operating instructions Please read the operating instructions carefully before erecting and commissioning, even if you already have experience with KERN balances. 4.2 Staff training The device may only be operated and looked after by trained members of staff. 5 Transport and storage 5.1 Acceptance check Please check the packaging immediately upon delivery and the device during unpacking for any visible signs of external damage. 5.2 Packaging Please retain all parts of the original packaging in case it should be necessary to return items at any time. Only the original packaging should be used for return consignments. Before despatch, disconnect all attached cables and loose/movable parts. Apply any intended transport security devices. Secure all parts, e.g. glass windshield, weighing plate, power unit etc., to prevent slipping and damage BA-defsi-0433

206 6 Unpacking, installation and commissioning 6.1 Place of installation, place of use The balance is constructed in such a way that reliable weighing results can be achieved under normal application conditions. By selecting the correct location for your balance, you will be able to work quickly and precisely. Therefore please observe the following at the place of installation: Place the balance on a firm, level surface; Avoid extreme heat as well as temperature fluctuation caused by installing next to a radiator or in the direct sunlight; Protect the balance against direct draughts due to open windows and doors; Avoid jarring during weighing; Protect the balance against high humidity, vapours and dust; Do not expose the device to extreme dampness for longer periods of time. Inadmissible bedewing (condensation of air moisture on the device) can occur if a cold device is taken into a significantly warmer environment. In this case, please acclimatise the device for approx. 2 hours at room temperature after it has been disconnected from the mains. Avoid static charging of the material to be weighed, weighing container and windshield. Major display deviations (incorrect weighing results) are possible if electromagnetic fields occur as well as due to static charging and instable power supply. It is then necessary to change the location. 6.2 Unpacking Carefully remove the balance from its packaging, remove the plastic wrapping and position the balance in its intended working location Installation Install the balance in such a fashion that the weighing plate is absolutely horizontal. Please make sure that the transportation lock of the models N and A has been removed before placing the weighing plate. 440-BA-defsi

207 6.2.2 List of items supplied Standard accessories: Balance (protective working cover encl.) Weighing pan Mains cable Test weight Operating instructions Draft shield (440-21N, A) 6.3 Mains supply Electric power supply is by means of the external mains supply circuit. The printed voltage level must comply with the local voltage. Only use original KERN mains supply circuits. The use of other makes is subject to approval by KERN. 6.4 Battery Operation Remove the battery cover from the bottom of the balance. Connect a 9 V block battery. Re-insert the battery cover. For battery operation the balance has an automatic switchoff function which can be activated and deactivated in the menu (chap. 8.1). Please follow the below instruction for the setting: Switch the balance on by pressing the key, then wait until display shows 0 Press and hold the key until display shows UNIT. Press the key 3 times, then AF will appear. Confirm with the key. Press the key to switch among the modes: 1) AF on : Battery conservation through automatic power-off 3 minutes after ending a weighing operation. 2) AF off : switchoff function deactivated. Confirm with the key. When the battery power is used up the display will show LO. Press the key and change the batteries at once. When the balance is not in use for a longer period of time remove batteries and keep them separately. Leakage of battery liquid might damage the balance BA-defsi-0433

208 6.5 Connecting peripheral equipment The balance must be disconnected from the mains before connecting or disconnecting additional equipment (printer, PC) to or from the data interface. Only use KERN accessories and peripheral equipment with your balance. These have been ideally coordinated to your balance. 6.6 Initial start-up A warm-up time of 5 minutes stabilises the measured values after switching on. The accuracy of the balance depends on the local acceleration of the fall. Please be sure to observe the information in the chapter on adjusting. 6.7 Adjustment As the acceleration value due to gravity is not the same at every location on earth, each balance must be coordinated in compliance with the underlying physical weighing principle - to the existing acceleration due to gravity at its place of location ( only if the balance has not already been adjusted to the location in the factory). This adjustment process must be carried out during the initial start-up, after change in location and variation of surrounding temperature. It is also recommendable to adjust the balance periodically during weighing operation in order to obtain exact measured values. 6.8 Adjusting Using a precision weight, the accuracy of the balance can be checked at any time and adjusted. Adjustment procedure: Check that the surrounding conditions are stable. A short warm-up time of about 5 minutes are recommended for stabilisation. Switch the balance on by pressing the key, then wait until 0 is indicated. Press the key and hold. After the acoustic signal is heard CAL will appear on the display for a brief period. The exact size of the selected adjusting weight flashes on the display following this (capture 8.3 Select the adjusting weight ). Now place the adjusting weight in the middle of the weighing plate. Now operate the key. Shortly after CAL F appears, and then the automatic return to the normal weighing mode will follow. On the display the weight of the adjusting weight appears. In case of an adjusting error or a wrong adjusting weight CAL E will appear. Repeat the adjusting procedure. Keep the adjusting weight near the balance. Daily verification of the balance accuracy is recommended for quality assured applications. 440-BA-defsi

209 6.9 Underfloor weighing Objects which, because of their size or shape, cannot be put on the scale, can be weighed by means of underfloor weighing. Proceed as follows: Switch off the balance. Turn the balance over. Open the cover plate (1) on the base of the balance. The hook for underfloor (2) weighing must be screwed carefully and completely without damaging the balance. Place the balance over an opening. Hang the item to be weighed on the hook and carry out weighing. 1 2 Fig. 1: Setting up the balance for underfloor weighings! CAUTION For the underfloor weighing use only the original hook of KERN. Take care that all hanged items are stable enough to hold the goods which you wish to weigh (!!Danger of breaking!!). Never hang goods more than the maximum permitted weight (!!Danger of breaking!!). Always make sure that there are no living beings or materials below the load that could be injured or damaged.! NOTE After completing the underfloor weighing, the opening in the floor of the balance must be closed again (dust protection) BA-defsi-0433

210 7 Operation 7.1 Overview of display 7.2 Weighing Switch the balance on by pressing the key. The balance will show for approx. 3 seconds and then change to 0. Now it is ready for use. Important: If the display does not show 0 press the key. Only now (!) place object on the weighing pan. Make sure that the weighing object does not stripe or touch the housing or base. Now the weight will be indicated. After a successful resting position control the weighing unit (e.g. g or kg) will appear on the far right at the bottom of the display. If the object should be heavier than the weighing range allowance, the symbol E (overload) will appear on the display and a tone can be heard. 7.3 Taring Switch the balance on by pressing the key, then wait for the 0 indication. Place the jiffy on the weighing pan and press the key. Display again shows 0. Now the weight of the jiffy is memorised internally. By pressing the again. key after a weighing procedure, 0 will appear on the display The taring procedure can be repeated continuously, for instance when mixing several components. The limit is reached when the full weighing range is overlaid. After having removed the jiffy the total weight will appear as a minus indication. 440-BA-defsi

211 7.4 Plus / Minus Weighings For instance to control piece-weights, filling process control etc. Switch the balance on by pressing the key, then wait until 0 is indicated. Place rated weight on the weighing pan and tare on 0 by pressing the Remove rated weight. key. Place the objects on the weighing pan successively, the balance will show any deviation from the rated weight in + and -. According to the same procedure packages with the same weight, related to a rated weight, can be produced. Return to the weighing mode by pressing the key. 7.5 Piece counting Switch the balance on by pressing the Briefly press the key. key, then wait until 0 is indicated. Reference number 5 will appear. To call up the reference numbers 10, 25 and 50 press the key several times. Put so many pieces on the weighing pan as the set reference number requires. Confirm by pressing the key. The balance is now in the piece counting mode and will count all pieces laying on the weighing pan. By pressing the key the balance returns to the weighing mode and displays the weight of the counted pieces. Important: The higher the reference number, the more accurate the piece counting is. See the table Technical Information on page 12 for minimum counting weight. If the number of pieces is below the minimum weight the display shows Er1. Return to the weighing mode by pressing the key. key be- Jiffies can also be used to count pieces. Tare the jiffy by pressing the fore beginning the piece counting operation BA-defsi-0433

212 7.6 Gross-total Weighings Useful when several individual weighing operations should be carried out additively and successively, and when you want to know the total weighed-in weight (gross-total, this means without the weight of the jiffy). Example: Tare a jiffy by pressing the key. Weigh component, and tare back to 0 with the key. The activation of the memory is shown by a triangle on the far left of the display. Weigh component, by pressing the key the gross-total is displayed, this means the sum of component and. Tare to 0 by pressing the key. Weigh component, by pressing the key the gross-total is displayed, this means the sum of the components and and. If necessary fill the formula container up to the desirable level. To return to the weighing mode press the key. 7.7 Percentage weighing Symbol on display: % Percentage weighing allows the weight to be displayed as a percentage in relation to a reference weight. Use the key to switch the balance on and wait for 0 to appear. Repeatedly press the key briefly. This runs through the reference piece numbers of the counting function 100% will subsequently appear on the display. Place the reference items in the weighing basin. Press the key and the item weight is accepted as a reference (100%). You may now place the test pieces on the weighing plate. The percentage value as against the reference item will appear on the display. Return to weighing mode by pressing the key. 440-BA-defsi

213 7.8 Weighing units Switch the balance on using the key and wait for 0 to be displayed. Press the key until an acoustic signal is heard and UNIT is seen on the display. Operate briefly. The set unit will appear on the display. Use the key to choose between the various units (see chart). Press the key to accept the set weighing unit. Display Conversion factor 1 g = Gramm g 1. Pound lb Unze oz Troy Unze ozt Tael Hongkong tlh Tael Taiwan tlt Grain gn Pennyweight dwt Momme mom Tola tol Carat ct 5 Different foreign weighing units are integrated into the various balance models. The details can be found on this chart: Models N A N N Unites Gramm x x x x x x x x x x x x x Pound x x x x x x x x x x x Unze x x x x x x x x x x x x x Troy Unze x x x x x x x x x x x x x Tael Hongkong x x x x x x x x x x x x x Tael Taiwan x x x x x x x x x x x x x Grain x x x x x x Pennyweight x x x x x x x x x x x x x Momme x x x x x x x x x x x x x Tola x x x x x x x x x x x x x Karat x x x x x A N N N N A N N N BA-defsi-0433

214 7.9 Rear illuminated display To choose the backlight mode, please follow the below instruction for the setting: Switch the balance on by pressing the key, then wait until display shows 0. Press and hold the key until display shows UNIT. Press the key 6 times, then bl will appear. Confirm with the key. Press the key to switch among the backlight modes: Display Mode Function bl on Backlight on Contrasting display which can also be read in the dark. bl off Backlight off Save the battery bl Ch Backlight switches automatically off 10 sec after stable indication Save the battery Confirm with the key. 440-BA-defsi

215 8 Settings 8.1 Menu structure: Switch the balance on using the key and wait for 0 to be displayed. Press the key approximatly 3 sec. to enter in the Setting modus. By pressing the By pressing the key the different menuoption be showed. key a menuoption is selected. In this menuoption the choice is made by the key. By repeated pressing the key the setting is saved. press key approx.. 3 sec. Unit capture 8.4.1: Data transfer mode Pr Pr PC AU PC AU Pr re Cr capture 8.4.2: Baudrate baud capture 6.4 Battery operation AF AF on AF off capture 8.2: Zero - tracking tr on off capture 8.3: Select the adjusting weight CAL 1/4Max 1/2Max 3/4Max Max capture 7.9: Rear illuminated display bl bl on bl off bl Ch BA-defsi-0433

216 8.2 Dosage und Zero-tracking When the Auto-Zero-function is activated, any slight changes of the zero readout are automatically tared. In the event that small quantities are removed or added to the material to be weighed, incorrect weighing results can be displayed due to the stability compensation in the balance. (Example: Slowly draining fluids from a container on the balance.) Having dosages with slight changes of weight it is recommended to deactivate this function. With switched off Zero-Tracking the display however is more unstably. Activate/deactivate Zero-Tracking Display 1. Press the key until unit" is displayed. Unit 2. Repeatedly press the key until tr is displayed. tr 3. The function can be activated by pressing the key. tr on 4. The function is deactivited by pressing the print key again. 5. The changed setting is accepted by using the key. 6. The balance will return to weighing mode. 0,0 g tr off 8.3 Select the adjusting weight The calibrating weight can be selected from four prescribed nominal values (1/4; 1/2; 3/4 or max.) on the KERN 440 model (also see Table 1, manufacturers settings grey underlayed ). We recommend the selection of as high a nominal value as possible in order to achieve high-grade measuring technique weighing results. Alternatively the non-included adjustment weights can be purchased from KERN. Table 1: N A N N A N N 10g 10g 50g 100g 100g 100g 200g 20g 20g 100g 200g 200g 200g 500g 30g 50g 150g 300g 500g 300g 700g 40g 60g 200g 400g 600g 400g 1000g N N A N N N 500g 1000g 1000g 1000g 1000g 1000g 1000g 2000g 2000g 2000g 2000g 2000g 1500g 3000g 5000g 3000g 4000g 4000g 2000g 4000g 6000g 4000g 6000g 6000g 440-BA-defsi

217 8.4 RS 232 C Data output via interface RS 232 C General information As a condition for the data transfer between the balance and a peripheral device (for instance printer, PC...) both devise have to be set on the same interface parameter (for instance baud rate...) Data transfer mode Setting data transfer mode Display 1. Press the key until unit" is displayed. Unit 2. Press the key. The set mode will now appear Pr. Pr PC 3. By pressing the key the setting can be changed. 4. Use the key to adjust the mode. (Pr PC; AU PC; AU Pr ; re Cr ; details capture The changed setting is accepted by using the key. AU Pr 6. The balance will return to weighing mode. 0,0 g Baudrate The Baud rate for the data transfer is selctable. The following example demonstrates how to set the Baud rate Setting the baud rate Display 1. Press the key until unit" is displayed. Unit 2. Press the key. Pr 3. Press the key. The set baud rate will now appear (e.g baud). Baud 4. Confirm with the key Use the key to adjust the baud rate (1200, 2400, 4800, 9600). 6. The changed setting is accepted by using the key. 7. The balance will return to weighing mode. 0,0 g BA-defsi-0433

218 9 Interface RS 232 C 9.1 Technical Data 8-bit ASCII Code 1 start bit, 8 data bits, 1 stop bits, no parity bit Baud rate adjustable to, 1200, 2400, 4800 and 9600 baud Miniature plug is necessary (9 PIN D-Sub) When working with an interface correct operation is secured only if the corresponding KERN-interface-cable (max. 2m) is used. 9.2 Description of the jack 5 1 Pin 2: Pin 3: Pin 5: transmit data receive data signal ground Description of the data transfer Pr PC A reading will be transmitted, only if the PRINT key is pressed and the weight is stable. a. stable weight/pieces/percentage format B * B B B B B B B B 0. 0 B g B B CR LF b. Error format B B B B B B B E r r o r CR LF AU Pr If a stable reading comes up, the reading will be sent once automatically. c. stable weight/pieces/percentage format B * B B B B B B B B 0. 0 B g B B CR LF d. Error transmit B B B B B B B E r r o r CR LF 440-BA-defsi

219 9.3.3 AU PC Weight readings will be sent automatically and continuously, no matter the weight reading is stable or unstable. e. Stable weight/pieces/percentage format B * B B B B B B B B 0. 0 B g B B CR LF f. Error format B B B B B B B E r r o r CR LF g. unstable weight/pieces/percentage format B * B B B B B B B B 0. 0 B CR LF re Cr Remote commands s/w/t will be sent from the remote to the balance as ASCII code. When the balance received the s/w/t command, following data will be transmitted. s function: a stable weight reading is sent via RS232 interface w function: a weight reading (stable or unstable) is sent via RS232 interface t function: no data transmitted, balance perform Tare function. h. stable weight/pieces/percentage format B * B B B B B B B B 0. 0 B g B B CR LF i. Error format B B B B B B B E r r o r CR LF j. unstable weight/pieces/percentage format B * B B B B B B B B 0. 0 B CR LF SYMBOLS: = Blank or M B / 0 /. = Blank / weigh reading / decimal point, depending on the weight reading g = weight unit / pieces / % E, o, r = ASCII CODE of E, o, r CR = Carriage Retur LF = Line Feed B * BA-defsi-0433

220 10 Maintenance, upkeep, disposal 10.1 Cleaning Please disconnect the device from the operating voltage before cleaning. Only use a cloth dampened with mild suds and not aggressive cleaning agents (solvents or similar). Please ensure that fluids are not able to get into the device and rub off using a clean, soft cloth. Loose sample residue/powder can be removed carefully using a brush or hand vacuum cleaner. Remove any spilt material to be weighed immediately Maintenance, upkeep The device may only be opened by trained service engineers authorised by KERN. Disconnect from the mains supply before opening Disposal The operating company shall dispose of the packaging and the device in compliance with the valid national or regional law of the operating location. 440-BA-defsi

221 11 Troubleshooting The balance should be switched off for a short time following an interruption in the programme sequence and disconnected from the mains supply. It is then necessary to repeat the weighing process from the beginning. Help: Interruption Possible cause Weight display is not illuminated. The balance is not switched on. The weight display changes continually The mains supply connection has been interrupted (mains cable not plugged in/faulty). Power supply interrupted.. The batteries are wrongly inserted, the batteries are empty No batteries are attached Draught/air movement Table/floor vibrations The weighing plate is in contact with foreign matter. Electromagnetic fields / static charging (choose different location/switch off interfering device if possible) The weighing result is obviously incorrect The balance display is not set to zero Adjustment is no longer correct. Great fluctuations in temperature. Electromagnetic fields / static charging (choose different location/switch off interfering device if possible) Switch the balance off if other error messages should appear and then switch on again. Contact the manufacturer if the error message does not disappear BA-defsi-0433

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