1.6 WT 60 BASE 2004/108/EC (EMC) - EN

Transcription

1 Microlectra bv. Hermanus Boerhaavestraat ME Oud-Beijerland. Netherlands. Tel 31(0) Fax 31(0) Installation user s manual version 1.6 WT 60 BASE 2004/108/EC (EMC) - EN :2001 INSTRUMENT IDENTIFICATION

2 SYMBOLS The following symbols are used in the manual to draw the reader s attention to important points: Caution! Risk of electric shock! Caution! This operation must be performed by specialist personnel. Pay particular attention to the following points. Further information. GUARANTEE 24 months from the delivery document date. The guarantee covers only defected parts and includes the replacement parts and labour. All shipping and packing costs are paid by the customer. It is possible to have the repair in guarantee on condition that the returned product has not been transformed, damaged or repaired without authorization. No guarantee is applicable on returned products without the original label and/or serial number. No guarantee against misuse. Batteries: Laumas provides 1 year guarantee from the date of delivery note, against material defects or battery manufacturing faults. Disposal of Waste Equipment by Users in Private Household in the European Union This symbol on the product or on its packaging indicates that this product must not be disposed of with your other household waste. Instead, it is your responsibility to dispose of your waste equipment by handing it over to a designated collection point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at this time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, your household waste disposal service or the reseller.

3 TABLE OF CONTENTS RECOMMENDATIONS FOR CORRECT INSTALLATION... 1 INSTRUMENT OPERATION... 1 TECHNICAL FEATURES... 2 ELECTRICAL CONNECTIONS CHANGING VOLTAGE 230 / 115 VAC... 4 STARTING PROCESS... 5 TARE ZERO-SETTING... 5 INSTRUMENT ALREADY CALIBRATED IN LABORATORY... 6 INSTRUMENT NOT CALIBRATED... 7 THEORICAL CALIBRATION... 8 CALIBRATION WITH CALIBRATING WEIGHT... 9 SET POINT AND HYSTERESIS PROGRAMMING WEIGHT ZERO-SETTING FOR LITTLE CHANGES PASSWORD KEY FUNCTIONS OVERVIEW OF SET-UP MENU SET-UP MENU (PROGRAMMING) ALARMS PRINT COMMUNICATION PROTOCOL MODBUS RTU PROTOCOL RS 232 CONNECTION CABLE BETWEEN WT60 AND PC RS 485 CONNECTION AMONG INSTRUMENTS WT

4 RECOMMENDATIONS FOR CORRECT INSTALLATION OF WEIGHT INDICATORS - The entry into the cable board of cells must be independent ( on one side or the other of the board ) and directly connected to the terminal board of the device without breaking by bearing terminal boards or passing through troughs containing other cables. - Use the " RC " filters on the instrument-driven coils of the remote control switches. - Avoid inverter, if inevitable, use filters and separate with sheets. - In case of 230Vac supply, use a 380/230Vac transformer avoiding to use the 380Vac phase and the neutral. - The installer of the board is responsible for securing the electrical safety of the indicators. - It is a good norm to let the indicators always switch on to prevent the formation of condensation. OPERATION Weight transmitter with 4 set-point free settable on full range, 4 output potential free relay contacts (115Vca/30Vdc, 0.5 A). For weights superiour or equal to the values of the set-points the related contacts will be closed. The opening of the contacts for decreasing weight will be executed by considering the histeresys values programmed in the constants. The WT60 is equipped with 3 inputs to perform the following functions: - Weight zero-setting - Print - Gross / Net weight visualization or Peak function CALIBRATION : Instrument calibration can be performed by setting some parameters during the constants programming (THEORETICAL CALIBRATION) or by means of a SAMPLE WEIGHT. SERIAL PORTS: The instrument is equipped with an RS232 serial output (COM 1) and an RS422/485 serial output (COM 2). According to serial ports setting, executable via keyboard, the following connections can be performed: - 24 column printer (net/gross weight, peak value, date, time and instrument identification number can be printed out via external contact). - remote display for weight transmission. - PC / PLC : Communication Protocol for PC, ModBus, ProfiBus (only with converter model Modprofi)

5 TECHNICAL CHARACTERISTICS Power Supply 230 / 115 Vac 50/60 Hz Power consumption 10 VA Insulation Class II Humidity (condensate free) 85 % Operating Temperature -10 C +50 C StorageTemperature -20 C +70 C Display Led Keyboard 5-digit semi-alphanumeric 7 segment led (h 20 mm) 8 Led ( 3 mm) 5 Keys Standard version : Dimensions 144 mm x 72 mm x 120 mm (depth) Drilling template 139 mm x 67 mm Depth 170 mm (terminals boards included) Monting Panel Material of housing Noryl (UL 94 V1) Front Panel Protection IP54 IP67 box version : Dimensions 180 x 180 x 100 mm. Four fixing holes Ø 4 mm (centre distance 163 x 163 mm). Monting Wall Front Panel Protection IP67 Load cells Supply 5 Vdc / 120mA (max 8 cells in parallel 350 ohm) Linearity < 0.01% Full Scale Temperature drift < % Full Scale / C A/D Converter 24 bit Internal divisions (display) +/ Measure range min: - 2 mv to + 2mV ; max 19.5 mv to mv Digital Filter / Conversion rate from 0.2 to 25 Hz ; readings/sec. Decimals / Display increments 0-4 decimals ; x 1 x 2 x 5 x 10 x 20 x 50 x 100 Logic Outputs Logic Inputs N 4 relays (NO contacts) max 115Vac/30Vdc, 0.5 A cad. N 3 optoisolated 12Vdc/24Vdc PNP Serial Ports (n 2) COM1: Rs232c half duplex ; COM2: Rs422/Rs485 half duplex. Max cable lenght 5 m (Rs232c) ; 500 m (Rs422 - Rs485) Serial Protocols ASCII; Modbus ; Profibus (only with converter model Modprofi) Baud rate 1200, 2400, 4800, 9600, 14400, 19200, 28000, 38400, selectable - 2 -

6 ELECTRICAL CONNECTIONS Warning: the following procedures must be executed by skilled workers. All the connections must be executed while the instrument is switched off. Connect the load cells by means a terminal board in a water-proof junction box, by connecting the leads having the same colour; perform the same operation for the shield. By means of a shielded cable with a section not lower than 0,2 mmq connect the terminal board to the WT60. The routing shall be far away from the power cables and possibly protected by a metal pipe. WT60 BASE CONNECT THE SHIELD TO THE GROUND LOAD CELLS: 4-WIRE CONNECTION L N EXCITAT.+ EXCITAT. - SENSE + SIGNAL + SIGNAL - SENSE - 6-WIRE CONNECTION LOAD CELLS COM (1 / 2) ZERO NET-GROSS / PEAK PRINT COMMUN INPUTS COMMON OUTPUTS SET 4 SET 3 SET 2 SET Vca COM CONNECTOR (1 / 2): 1.SHIELD 2.( RX ) RS232 - COM 1 3.( TX ) RS232 - COM 1 4.( TX + ) RS422 - COM 2 5.GND - COM 1 6.( TX - ) RS422 - COM 2 7.( RX - ) RS422 - COM 2 8.( CTS ) RS232 - COM 1 9.( RX + ) RS422 - COM 2 WARNING: The RX - of the RS422 output is connected at PIN 7, while in WT30000-series instruments it was connected at PIN SIGNAL + SIGNAL - EXCITAT. + EXCITAT

7 IP67 BOX VERSION CONNECTOR COM 1 / 2 1.SHIELD 2.( RX ) RS232 - COM 1 3.( TX ) RS232 - COM 1 4.( TX + ) RS422 - COM 2 5.GND - COM 1 6.( TX - ) RS422 - COM 2 7.( RX - ) RS422 - COM 2 8.( CTS ) RS232 - COM 1 9.( RX + ) RS422 - COM COM WARNING: The RX - of the RS422 output is connected at PIN 7, while in WT30000-series instruments it was connected at PIN 1. 4-WIRE CONNECTION LOAD CELLS 1 2 EXCITAT. + EXCITAT SIGNAL+ SIGNAL - CONNECT THE SHIELD TO THE GROUND L N EXCITAT.+ EXCITAT. - SENSE + SIGNAL + SIGNAL- SENSE - 6-WIRE CONNECTION LOAD CELLS ZERO NET- GROSS / PEAK PRINTER COMMUN INPUTS COMMON OUTPUTS SET 4 SET 3 SET 2 SET Vac CHANGING VOLTAGE Remove the board and connect together the welding points market in the diagram using a stiff wire (on welding side, located under the transformer ). 230 Vca 115 Vca JP V. JP V. JP V. JP V. JP V. JP V

8 STARTING UP THE INSTRUMENT Turn on the instrument. Supply the instrument, wait for about 5 minutes so that all components reach a steady temperature. Make sure that the displayed weight is positive and that increases if one subjects the container to a force weight. In case the instrument displays a negative value or no Conn, SEGn InF, no-segn messages, check the load cells connection and the correct load cells installation (loading direction). Check the correct mechanical installation of the container ( the position of tubes, mounting accessories, etc. ). TARE ZERO-SETTING ( ONLY FOR INSTRUMENT ALREADY CALIBRATED IN LABORATORY) Make sure that the container is empty, during the weight displaying phase press the CONST key and the ConSt message will appear for 2 seconds, while this message is displayed press, the message CAL.tE. will appear. Press, the CALIb message will appear, press ENTER and the display will show CAL alternating with the weight reading. Press ZERO to set the tare to zero. To exit, after setting the tare to zero, press ESC for two times to return to the weight displaying phase. After the tare zero-setting, the tare value will be memorized in the ZEro parameter (submenu CAL.tE. ), take note the value (see page 6). In case of tamperings or instrument replacement, if it is not possible to unload the product to repeat the operation, you can write the memorized ZEro value in the tara parameter (submenu CAL.tE. ). ALARM: In case the instrument shows the message, it indicates that the weight is higher than the value programmed in the CAPAC parameter

9 INSTRUMENT CALIBRATED IN LABORATORY In this case the instrument is supplied pre-calibrated; proceed with a calibration check. Set values : CAPAC ( ); SEnSI. ( ); divis ( ) INSTRUMENT CALIBRATION CHECK: Ensure that the container is empty and that the instrument displays zero. Place a significant amount of products in the container (equal to at least 50% of the maximum quantity to be weighed) and ensure that the instrument indicates the correct value. - If there is a significant difference between the displayed value and effective amount ( greater than 1-2% ) check that this is not caused by a mechanical fault and check the electrical connections of the cell and the cell loading position. If the difference is not significant but around 1-2 % proceed with paragraph WEIGHT DISPLAY CORRECTION VIA KEYBOARD. CORRECTING DISPLAYED WEIGHT FROM KEYBOARD If the instrument indicates a weight that is different from actual product weight inside the container, proceed in the following way: During the weight displaying phase press the CONST key, the " ConSt " message will appear, while this message is displayed press FORM, the following appears: CAL.tE., press, the following appears: CALIb, press ENTER and the display will show CAL alternating with the weight reading, press and program the value of weight that is into the container by using and to increase / decrease the value, to change position (next digit). After setting the value and verifying its correctness, confirm pressing the ENTER key, the display will show CALIb alternating with the weight reading, then press ESC for two times to exit and return to the weight displaying phase. After the WEIGHT DISPLAY CORRECTION, the PortA. parameter will change, take note this value (submenu CAL.tE. ). In case of tamperings or instrument replacement, if it is not possible to unload the product or using a sample weight to repeat the operation, you can write the memorized PortA. value in the CAPAC parameter (submenu CAL.tE. )

10 INSTRUMENT THAT HAS NOT YET BEEN CALIBRATED In this case the instrument has been supplied not calibrated; proceed with its CALIBRATION (THEORETICAL or SAMPLE WEIGHT), TARE ZERO-SETTING and CALIBRATION CHECK procedures. CALIBRATION PARAMETERS ( submenu CAL.tE. ) CAPAC ( kg, only whole numbers) : Full scale load cells, it is used for Theoretical Calibration togheter with SEnSI. and divis parameters. tara ( kg, only whole numbers) : Tare ; it is used for setting the tare value when it is not possible to unload the product to execute a TARE ZERO-SETTING. SEnSI. ( mv/v ) : Load cell sensitivity, it is used for Theoretical instrument Calibration togheter with CAPAC and divis parameters. divis (Divisions) : System s resolution. PortA.,( ) only reading parameter ; capacity : only reading parameter; after calibration (theoretical or with sample weight) this parameter shows the value memorized in the CAPAC parameter. It changes after a CORRECTING DISPLAYED WEIGHT VIA KEYBOARD. Take note this value. In case of tamperings or instrument replacement, if it is not possible to unload the product or using a sample weight to repeat the THEORETICAL CALIBRATION, you can write the memorized PortA. value in the CAPAC parameter. ZEro,( ) only reading parameter ; after the tare zero-setting, the tare value will be memorized in this parameter. Take note the value; in case of tamperings or instrument replacement, if it is not possible to unload the product to reset the tare, you can write the memorized ZEro value in the tara parameter

11 THEORETICAL INSTRUMENT CALIBRATION The entry of CAPAC, SEnSI. and divis parameters, enables instrument calibration without the need for a sample weight. Obviously the calibration settings should be tested with a known quantity of product. During the weight visualization, press CONST, the "ConSt" message will appear, while this message is displayed press the key, CAL.tE. message appears, then press ENTER the following appears: CAPAC, press ENTER then set the full scale for the load cells in integral values without decimals. Example: if there a three load cells with a rated capacity of 300 kg, and the required resolution is 0.1 kg, set this parameter to 900. Confirm with ENTER, then press, the following will appear: tara, press and the following will appear: SEnSI, press ENTER and set load cell sensitivity expressed in mv with 4 decimal points. For load cells with sensitivity 2mV/V, set (for example: for 3 load cell with sensitivity mV, mV, mV, set mV). Confirm with ENTER, then press, the following will appear: divis, (resolution: from to 100). Press and then set system resolution from the options available. Each time resolution is modified the zero-setting and full scale in the memory are calculated automatically. Resolutions that are incompatible with calibration parameters or settings in the memory are not accepted. Press ENTER to confirm, then press ESC for two times to return to the weight display. On completion of THEORETICAL CALIBRATION proceed as follows : - RESET THE TARE( see paragraph TARE ZERO-SETTING). - CHECK CALIBRATION (see paragraph INSTRUMENT CALIBRATION CHECK). - if necessary CORRECT WEIGHT VIA KEYBOARD (see paragraph WEIGHT DISPLAY CORRECTION VIA KEYBOARD)

12 CALIBRATION WITH SAMPLE WEIGHT PROCEED TO CALIBRATION WITH SAMPLE WEIGHT ONLY IF YOU DO NOT KNOW THE FULL SCALE AND SENSITIVITY OF LOAD CELLS, or WITH LEVER RATIO SYSTEMS. Press CONST, the " Const " message appears, while this message is displayed press the CAL.tE. message appears, press ENTER, the following appears: key, " CAPAC ", press ENTER and set the value , confirm with ENTER. Then press until the divis message appears, press ENTER and set the resolution. Confirm with ENTER and the divis message appears again. Press ESC and the CAL.tE. message appears, then press, the following appears : CALIb, press ENTER, the message CAL alternated with the weight returns on display. Press ZERO to zero-set the system tare, place a significant amount of products in the container (equal to at least 50% of the maximum quantity to be weighed) checking on display that increase is proportional to the loaded weights, in order to ensure that no mechanic friction is present. Press and enter the sample weight value by using keys and to increase or decrease the value and to move to the next digit. After setting the value and checking that no other factors affect the container, press ENTER to confirm and the CALIb message, alternated with the weight, returns on display. Press ESC for two times to return to the weight displaying

13 SET POINT and HYSTERESIS PROGRAMMING During weight display, press FORM, to display: SEt l (set-point value 1) press ENTER and program set point value 1 by using keys to increase or decrease the value and to move to the next digit.. Press ENTER to confirm, followed by to display: and SEt 2 (set-point value 2) press ENTER and program set point value 2. Press ENTER to confirm, followed by to display: SEt 3 (set-point value 3) press ENTER and program set point value 3. Press ENTER to confirm, followed by to display: SEt 4 (set-point value 4) press ENTER and program set point value 4. Confirm with ENTER, then press ESC to display : IStE. 1 (hysteresis for set-point 1) press ENTER and program the hysteresis for set-point 1, by using keys and to increase or decrease the value and to move to the next digit. The condition of the set-point relay will change for decreasing weight when the weight will be equal to the programmed set-point value minus the one programmed in this constant. Press ENTER to confirm, followed by to display: IStE. 2 (hysteresis for set-point 2) press ENTER and program the hysteresis for set-point 2. Press ENTER to confirm, followed by to display: IStE. 3 (hysteresis for set-point 3) press ENTER and program the hysteresis for set-point 3. Press ENTER to confirm, followed by to display: IStE. 4 (hysteresis for set-point 4) press ENTER and program the hysteresis for set-point 4. Press ENTER to confirm, followed by ESC to return to the weight display

14 WEIGHT ZERO-SETTING FOR LITTLE CHANGES The instrument enables the reset function only if the quantity displayed is lower than the value set in the constant 0 SEt. If an attempt to reset a higher value is made, the message t is displayed and reset is not performed. Zero-setting via keyboard: Press ZERO during the weight display and the instrument displays the message StorE for 3 seconds. To reset the weight, press ENTER to confirm while the message remains on display. Zero-setting via contact: Close the ZERO contact briefly (approx. 0.5 seconds) to reset the weight. NET / GROSS FUNCTION (MANUAL BATCHING) - Press DOSA key or close the NET/GROSS external button to set to zero the instrument and allow to the operator to load additional quantities of product (the letter n will appear on the left hand side of the display). This operation may be carried out several times by the operator according to need. - Hold down DOSA or close the NET/GROSS button for about 3 seconds to return to the gross weight. Microlectra bv. Hermanus Boerhaavestraat ME Oud-Beijerland. Netherlands. Tel 31(0) Fax 31(0) info@microlectra.nl

15 ACCESS PASSWORD ( 6935 ) It is possible to access to the programming and calibration functions by using a password. ENABLE THE PASSWORD: 6935 Press CONST, the "ConSt" message will appear, while this message is displayed press the key, 0000 will appear, enter 6935 (password), by using keys and to increase or decrease the value and to move to the next digit. Then confirm with ENTER, off will appear. Press and enter the numbers corresponding to the following functions (the operator will be able to access to the following functions only by means of the password): 1 = CAL.tE. ; CALlb parameters ( Theoretical Calibration, Tare zero setting, Weight correction, Calibration with sample weight). 2 = Set-up Menu ( test excluded). 3 = Set-Point and Istheresys programming. For example: In order to protect the access to instrument s calibration and programming of set-point, set "00013" or "10030" (it doesn t matter the order in which you set the numbers corresponding to the functions to be blocked). After setting the numbers of the parameters to be blocked, confirm with ENTER to exit and return to the weight display. DISABLE THE PASSWORD: Press CONST, the "ConSt" message will appear, while this message is displayed press the key, 0000 will appears. Enter 6935 by using keys and to increase or decrease the value and to move to the next digit; then confirm with ENTER. Enter 00000, then press ENTER again to disable the password and return to the weight display

16 KEY FUNCTIONS WITHIN MAIN MENU AND SUBMENUS To access the main menu press CONST, the " ConSt " message will appear, while this message is displayed press the key. - set to zero the displayed value during the parameter programming. - exit from submenu item and return to previous item; exit main menu - move to the next digit during the parameter programming - move to next menu item - increase the value of selected parameter - move to previous menu item - decrease value of selected parameter - enter selected menu item - confirm values entered in parameters LED FUNCTIONS: L1 : Status of ZERO input; illuminates when the ZERO input contact is closed. L2 : Status of PRINT input; illuminates when the PRINT input contact is closed. L3 : Status of NET/GROSS input; illuminates when the NET/GROSS input contact is closed. L4 : Status of PEAK input; illuminates when the PEAK input contact is closed. L5 : Status of set-point1 output; illuminates when the set-point1 output is closed. L6 : Status of set-point1 output; illuminates when the set-point2 output is closed. L7 : Status of set-point1 output; illuminates when the set-point3 output is closed. L8 : Status of set-point1 output; illuminates when the set-point4 output is closed

17 OVERVIEW OF SET-UP MENU To access the main menu press CONST, the " ConSt " message will appear, while this message is displayed press the key : Display Functions CAL.tE. THEORETICAL INSTRUMENT CALIBRATION (see page 7 ) CALIb PArAM TARE ZERO-SETTING (see page 4 ) WEIGHT DISPLAY CORRECTION VIA KEYBOARD (see page 5) CALIBRATION WITH SAMPLE WEIGHT (see page 8) Programming of weighing parameters: filter, autozero, threshold for zero-setting, auto zero-tracking (see pages 16) out Set-point and input operating mode (see pages 17, 18). test Input / Output Test. Cell response signal expressed in mv. Internal points (see pages 18, 19) SeriA. Serial output configuration (see pages 19, 20, 21) Submenu PArAM : Display FILtE. Functions Weight filter parameter (from 0 to 9). ( Standard 5 ) 0 = most rapid response, 9 = maximum filter. Md.FLt. Weight acquisition frequency ( selectable from A to F) ( Standard = A ) AUt. 0 Autozero threshold on activation, expressed as a weight value (0 = disabled) 0 SEt Threshold for zero-setting for small variations. t. InS. 0 Zero-tracking time ( 0,1 to 5.0 seconds ) r. InS. 0 Zero-tracking divisions ( 1 to 99 divisions )

18 Submenu out : Display Functions Operating mode for OUTPUTS 1, 2, 3, 4 : SEt l SEt 2 SEt 3 SEt 4 Condition in which set-point 1 is activated. ( Standard GroSS ) net ; GroSS ; PEAK Output 1 normally open or normally closed. ( Standard n.a. ) n.a. ( open ) n.c. ( closed ) Activation of output 1. PoSIt. (for positive weights) ; negat. (for positive or negative weights) PoS. 0 (for positive weights, 0 included) ( Standard NET-GROSS function ) Operating mode for NET-GROSS/PEAK INPUT (input n. 3) : InG. 3 net. By closing the logic input n. 3, the weight will be set to zero, when L3 Led will light up, this operation can be repeated several times.. By keeping closed the logic input n. 3, the gross weight will appear and the L3 Led will light off. PEAK. Permanent closure of logic input 1 enables the PEAK function and illuminates the relative L4 led. Input opening deactivates the function. Submenu test : Display Functions t - In Logic input test t - out Logic output test. M.VoLt Load cell response signal expressed in mv P div. Internal points for single division

19 Submenu SeriA. : Display bau. C1 PEr. C1 bau. C2 Functions COM1-RS232 Baud rate, options available: 1200, 2400, 4800, 9600, 14400, 19200, 28000, 38400, COM1 ( RS232 ) connections: 232 of (RS232 disabled ) 232 PC (PC or PLC Communication Protocol) 232 ri (remote display) 232 rc (HDRIP575C or HDRIP5125C remote displays) 232 Mo (serial communication by means ModBus protocol ) 232 St (printer) bcdca ( function disabled) bcdef ( function disabled) COM2-RS422/485 Baud rate, options available: 1200, 2400, 4800, 9600, 14400, 19200, 28000, 38400, COM2 ( RS422/485 ) connections: 422 of (RS422/485 disabled ) 422 PC (PC or PLC Communication Protocol) PEr. C2 422 ri (remote display) 422 rc (HDRIP575C or HDRIP5125C remote displays) 422 Mo (serial communication by means ModBus protocol ) 422 Pr (serial communication by means ProfiBus protocol only with ModProfi converter) Addr. Serial address or machine identification address (from 1 to 99) Un. - St. Unit of measure for PRINT ( Kg, Gr, t ) A - CAr. number of lines blank from a printout to another (from 0 to 9) Ind.Pr Serial address fro Profibus Protocol

20 SET-UP MENU To exit and return to the previous menu press ESC. To access the main menu press CONST, the " ConSt " message will appear, while this message is displayed press the key : CAL.tE. This section enables Theoretical instrument calibration (see page 6). CALIb This section enables system tare reset, new calibration with a sample weight, or correction of the display if the instrument displays a value other than the actual weight in the container (see page 4, 5 and 8). PArAM Use and to pass from a parameter to another. ENTER to enter parameter. During the parameters programming use: move to the next digit. and to increase/decrease a value. ENTER to confirm the value programmed. FILtE. (Filter to reduce weight oscillations). The higher the value is, the slower is the weight change. The change of the Filter parameter determines the display update frequency (see table below) and then the analog output, relays outputs and the serial communication. Md.FLt. (weight acquisition frequency). It is also possible to change the weight acquisition frequency of the AD7730 converter, the instrument has six different calculation methods ( A, B, C, D, E, F ). By selecting MODE A ( default ) the acquisition frequency is 57 Hz. By selecting from MODE B to F the acquisition frequency changes according to the Filter parameter (see table below)

21 FILTER DISPLAY UPDATE FREQUENCY ( Hz ) MODE FILTER FILTER WEIGHT ACQUISITION FREQUENCY (HZ) = MODO A 0 to ; 1 ; = MODO b to = MODO C 0 ; to ; = MODO d to = MODO E to = MODO F to Aut. 0 ( autozero threshold). On activation of the instrument, if the weight displayed is lower that the set value in this section, the value is reset. 0 - SEt (reset threshold for small variations). During weight display press ZERO or close the reset input to reset the display, only if the quantity displayed is lower than the value set in this constant. t. InS. 0 (zero-tracking time). To enable the zero-tracking time set from 0.1 to 5.0 seconds. When the balance is empty, the zero-tracking device maintains the zero indication within certain limits automatically; it compensates for slow variations of weight. To active the zero-tracking set t InS 0 and r InS 0 parameters. The zero-tracking runs when the weight is different from the zero for a value equal or lower than divisions set in the r InS 0 parameter, for a time higher than that set in the t InS 0 parameter. To deactive this function set at least one of two parameters to zero. r. InS. 0 (zero-tracking divisions). To enable the zero-tracking time set from 1 to 99. out This section enables setting of the input operating mode and condition for activation of the logic output in relation to the programmed set-point. Programming is independent for each of the 4 logic outputs. Use and to pass from a parameter to another. ENTER to enter parameter

22 SEt 1 (SET-POINT 1 operating mode) net GroSS PEAK SET-POINT 1 is activated according the net weight value. SET-POINT 1 is activated according to the gross weight value. SET-POINT 1 is activated according the peak value. Press ENTER to confirm, the following will appear: n.a. n.c. (normally open) output n 1 is activated when the weight is equal to or greater than the value set in SET-POINT 1. (normally closed) output n 1 is activated when the weight is lower than the value set in SET-POINT 1. Press ENTER to confirm, the following will appear: PoSIt. negat. PoS. 0 output 1 is activated for positive weights only. output 1 is activated for positive and negative weights. output 1 is activated for positive weights, 0 included (if SEt 1 = 0 is programmed). To program SEt 2, SEt 3 and SEt 4 proceed to the previous way. InG. 3 (Operating mode for input n. 3) net PEAK By closing the logic input n. 3, the weight will be set to zero, when L3 Led will light up, this operation can be repeated several times.. By keeping closed the logic input n. 3, the gross weight will appear and the L3 Led will light off. Permanent closure of logic input n.3 enables the PEAK function and illuminates the L4 led. Input opening deactivates the function. test Use and to pass from a parameter to another. ENTER to enter parameter and exit

23 t - In (Logic Inputs Test). The status of inputs can be checked by ensuring the changeover from 0 to 1 for the inpu1 when the relative input changes from open to closed; from 0 to 2 for the input 2; from 0 to 3 for the input 3 the relative input changes from open to closed. The zero on the left represents input 1, and the one on the right represents input 3. t - out (Logic Outputs Test). This enables a check on operation of the four outputs. The instrument shows 0000, the zero on the left represents input 1, and the one on the right represents output 4. Press to close the selected output, press to move to the following output; press again to re-open the output. M.VoLt (load cell response signal expressed in mv) Value with three decimal points. Note: At maximum load, this parameter must not exceed the following values: - cell sensitivity 1 mv/v ---> max set value 5 mv. - cell sensitivity 2 mv/v ---> max set value 10 mv. - cell sensitivity 3 mv/v ---> max set value 15 mv. P div. (Internal points for single division). Internal points used for each single division displayed. SeriA. The instrument is equipped with a RS232 serial port (COM 1) and a RS422/RS485 port (COM 2). For all protocols, communication parameters are fixed at 8 data bits,1 stop bit and no parity. Use and to pass from a parameter to another. ENTER to enter parameter. During the parameters programming use: move to the next digit. and to increase/decrease a value. ENTER to confirm the value programmed. bau. C1 ( baud rate COM 1- RS232 ). Select the desired baud rate: 1200, 2400, 4800, 9600, 14400, 19200, 28000, 38400, For PRINTER connection set Baud-rate for COM 1 =

24 PEr. C1 (COM 1 connections RS232) 232oF 232PC 232rI 232rC 232Mo 232St bcdca bcdef RS232 disabled. Bidirectional Protocol, the instrument responds to the request received from the serial line. Data exchange only occurs if the address set from PC corresponds to that of the instrument. continuous transmission. Protocol for connection to remote display. Protocol for connection to HDRIP575C / HDRIP5125C remote displays. Communication Protocol ModBus RTU. Protocol for connection to a 24-column printer. function disabled function disabled bau. C2 ( baud rate COM 2- RS422/485 ). Select the desired baud rate: 1200, 2400, 4800, 9600, 14400, 19200, 28000, 38400, PEr. C2 (COM 2 connections - RS422/485) 422oF 422PC 422rI 232rC 232Mo 422Pr RS disabled Bidirectional Protocol, the instrument responds to the request received from the serial line. Data exchange only occurs if the address set from PC corresponds to that of the instrument. This protocol supports the RS serial communication system designed for connection of several instruments to a master unit. continuous transmission. Protocol for connection to remote display. Protocol for connection to HDRIP575C/ HDRIP5125C remote displays. Communication Protocol ModBus RT. Profibus Protocol (only with converter model Modprofi). Addr. (instrument address). A value from 1 to 99 can be set

25 Un. - St. (unit of measure for print), selectable: Kg, Gr, t. A - CAr. (number of lines blank from a printout to another) A value from 0 to 9 can be set. Ind.Pr Serial address for Profibus protocol. Set a value from 1 to 126. Microlectra bv. Hermanus Boerhaavestraat ME Oud-Beijerland. Netherlands. Tel 31(0) Fax 31(0) info@microlectra.nl

26 ALARMS no.con : It appears when any load cells is connected, or when a excitation core is not connected. SEGn InF : The load cell signal is lower than -20 mv. no-segn : It appears when a signal core is not connected or the signal is higher than 20 mv. Corto : It appears when a short circuit happens on load cell excitation cores. AdC-Er : error on AD7730 converter. : it indicates that the weight is higher than the value programmed in the CAPAC parameter. _ : it indicates that the weight is lower than no.cal : It appears, alternated to the weight, if no calibration has been executed ( CAPAC = 0 ); the instrument disables the serial communication. no.val : it appears during the calibration when the values are incompatible

27 PRINT For PRINTER connection set Baud-rate for COM 1 = EXAMPLES OF PRINT: Weight printout: From the weight visualization close the PRINT contact. WT data stampa ora stampa 12:15 PESO LORDO = 1077 Kg If DOSA key has been pressed or NET input has been closed, the following will appear: WT data stampa ora stampa 12:15 PESO NETTO = 45 Kg PESO LORDO = 1077 Kg If the PEAK input is closed, the following will appear: WT data stampa ora stampa 12:15 PESO LORDO = 345 Kg PICCO = 3309 kg

28 SERIAL PROTOCOL Baud rate: 1200, 2400, 4800, 9600, 14400, 19200, 28000, 38400, ( selectable ) Data length: 8 ( do not modify ) Bit stop: 1 ( do not modify ) Parity: none ( do not modify ) It is possible to connect up to 32 instruments. TO SELECT THE WEIGHT MONODIRECTIONAL TRANSMISSION SET THE PC CONNECTION IN THE SeriA. MENU and ADDRESS ( Addr. ) = 0 TO SELECT THE WEIGHT BIDIRECTIONAL TRANSMISSION SET THE PC CONNECTION IN THE SeriA. MENU and ADDRESS ( Addr. ) = from 1 to 99 MONODIRECTIONAL TRANSMISSION OF THE WEIGHT Used lines = TX, GROUND Program the instrument number ( Addr ) = 0 Readings per second: Baud rate 9600 / 5700, 5 readings/sec. The WT will transmit the following ASCII string: & N x x x x x x L y y y y y y \ ck ck CR in which : & = 1 character of string beginning ( 38 ASCII ) N = 1 c. of net weight identification ( 78 ASCII ) x x x x x x = 6 c. of net weight or Peak value (if present)( ASCII ) L = 1 c. of gross weight identification ( 76 ASCII ) y y y y y y = 6 c. of gross weight ( ASCII ) \ = 1 c. of separation ( 92 ASCII ) ck ck = 2 ASCII checksum characters calculated considering the characters between & and \ excluded. The checksum value is obtained from the calculation of XOR (or exclusive) of the 8-bit ASCII codes of the characters considered. This obtains a character expressed in hexadecimals with two digits that can have the values from 0 to 9 and from A to F. CR = 1 c. of string end ( 13 ASCII ) The weight data can contain possible fixed zeroes. The first character of net / gross weight can get the value (ASCII 45) in case of negative weight

29 BIDIRECTIONAL TRANSMISSION BETWEEN WT60 AND PC It is possible to connect up to 32 instruments. The PC always starts the communication, the instrument WT is enabled to data interconnection only if the PC s address corresponds to the instrument address. Readings per second:: Baud rate 9600, 30 readings/sec. Baud rate 57600, 160 readings/sec. After reception, the WT waits from 0 to 15 ms before sending a reply. 1) SETTING SET-POINTS FROM PC: Warning: If in the divis parameter has been programmed a value different from 1 / 0,1 / 0,01 / 0,001 and the set-point value that you want to programme is not multiple of divis value, the instrument will round to the nearest whole number below. For example: if divis = 2 and you programme 101, the instrument will round to 100. The PC transmits the following ASCII string containing the set-point to be set on the WT: $ a a x x x x x x y ck ck CR in which : $ = 1 character of string beginning ( 36 ASCII ) a a = 2 c. of address ( instrument number ) x x x x x x = 6 c. of setpoints ( ) y = 1 c. of setpoint s number ( see * ) ck ck = 2 c. of check-sum CR = 1 c. of string end ( 13 ASCII ) * ) y = A ( setpoint 1 ) = B ( setpoint 2 ) = C ( setpoint 3 ) = D ( setpoint 4 ) In the case of correct reception the WT replies with the following string: & & a a! \ ck ck CR in which: & & = 2 characters of string beginning ( 38 ASCII ) a a = 2 c. of address ( instrument number )! = 1 c. of OK reception ( 33 ASCII ) \ = 1 c. of separation ( 92 ASCII )

30 ck ck = 2 c. of check-sum CR = 1 c. of string end ( 13 ASCII ) while in the case of incorrect reception it replies with the following string: & & a a? \ ck ck CR in which : & & = 2 characters of string beginning ( 38 ASCII ) a a = 2 c. of address ( instrument number )? = 1 c. of reception error ( 63 ASCII ) \ = 1 c. of separation ( 92 ASCII ) ck ck = 2 c. of check-sum CR = 1 c. of string end ( 13 ASCII ) 2) READING WEIGHT, SET-POINT AND PEAK (IF PRESENT) FROM PC: The PC transmits the following ASCII string containing the item of data to be read: $ a a j ck ck CR in which : $ = 1 character of string beginning ( 36 ASCII ) a a = 2 c. of address ( instrument number ) j = 1 c. of setpoint s number ( see * ) ck ck = 2 c. of check-sum CR = 1 c. of string end ( 13 ASCII ) * ) j = a ( setpoint 1 ) = b ( setpoint 2 ) = c ( setpoint 3 ) = d ( setpoint 4 ) = p ( peak ) = t ( gross weight ) = n ( net weight ) The first character of net / gross weight can get the value (ASCII 45) in case of negative weight. In the case of correct reception the WT replies with the following string: & a a x x x x x x j \ ck ck CR while in the case of incorrect reception it replies with the following string:

31 & & a a? \ ck ck CR while in the event of a peak request, with no peak configured, it responds with: & a a # CR Error messages: In case of weight present in the container is higher than maximum capacity CAPAC, the alarm message will be displayed. The instrument will transmit the following string: & a a s s O-L s t \ ck ck In case of wrong load cells connection, the o-f message will be displayed. The instrument will transmit the following string: & a a s s O-F s t \ ck ck in which : s = 1 c. of separation (32 ASCII space-). 3 ) WEIGHT ZERO-SETTING FROM PC: The PC transmits the following ASCII string containing the zero-set command: $ a a Z E R O ck ck CR In the case of correct reception the WT replies with the following string: & & a a! \ ck ck CR while in the case of incorrect reception it replies with the following string: & & a a? \ ck ck CR In the event of zero-setting higher than the maximum zero-settable value, it replies with the following string: & a a # CR 4 ) TOGGLING NET WEIGHT FROM PC: The PC transmits the following ASCII string containing the net toggle command: $ a a N E T ck ck CR

32 In the case of correct reception the WT replies with the following string: & & a a! \ ck ck CR while in case of a wrong reception it replies with the following string: & & a a? \ ck ck CR 5) TOGGLING GROSS WEIGHT FROM PC: The PC transmits the following ASCII string containing the gross toggle command: $ a a G R O S S ck ck CR In the case of correct reception the WT replies with the following string: & & a a! \ ck ck CR while in the case of incorrect reception it replies with the following string: & & a a? \ ck ck CR 6 ) READING INPUTS STATUS: The PC transmits the following string ASCII containing the command of reading : $ a a I ck ck CR in which : I = 1 c. of serial command identification ( 73 ASCII ) The WT in case of correct reception replies with the following string containing inputs status: & a a I k k k \ ck ck CR in which : I = 1 c. of serial command identification ( 73 ASCII ) k k k = 3 characters of inputs status ( 0 = OPEN ; 1 = CLOSED) the first character on the left refers to the input n. 1 (terminal 9), character n. 2 = input n. 2 (terminal 10), character n. 3 = input n. 3 (terminal 11) while in case of a wrong reception it replies with the following string: & & a a? \ ck ck CR

33 7 ) READING OUTPUT STATUS: The PC transmits the following string ASCII: $ a a W ck ck CR in which : W = 1 c. of serial command identification ( 83 ASCII ) The WT in case of correct reception replies with the following string containing the outputs status: & a a W z z z z \ ck ck CR in which : W = 1 c. of serial command identification ( ( 83 ASCII ) z z z z = 4 c. of outputs status ( 0 = OPEN ; 1 = CLOSED) the character on the left refers to status of output n. 1 (terminal 13) character n. 2 = input n. 2 (terminal 14) character n. 3 = input n. 3 (terminal 15) character n. 4 = input n. 4 (terminal 16) character n. 5 = input n. 5 (terminal 11) while in case of a wrong reception it replies with the following string: & & a a? \ ck ck CR 8 ) FORCING OUTPUTS: The PC transmits the following ASCII string containing the command for forcing the status of outputs. To undo this command use the UNDO FORCING OUTPUTS COMMAND (9) or swtich off the instrument. $ a a U o o o o ck ck CR in which : U = 1 c. of serial command identification o o o o = 4 c. of outputs status ( 0 = OPEN ; 1 = CLOSED) the character on the left refers to status of output n. 1 The WT in case of correct reception replies with the following string: & & a a! \ ck ck CR

34 while in case of a wrong reception it replies with the following string: & & a a? \ ck ck CR 9) UNDO FORCING OUTPUTS COMMAND: The PC transmits the following ASCII string containing the command for undo the outputs forcing: $ a a o u t d e f a u l t ck ck CR in which : o u t d e f a u l t = 10 c. of serial command identification ( 111, 117, 116, 100, 101, 102, 97, 117, 108,116 ASCII ) The WT in case of correct reception replies with the following string: & & a a! \ ck ck CR while in case of a wrong reception it replies with the following string: & & a a? \ ck ck CR 10) READING DECIMAL NUMBER AND UNIT OF MEASURE : The PC transmits the following ASCII string containing the request of decimal number: $ a a D ck ck CR in which : D = character of serial command identification ( 68 ASCII ) The WT in case of correct reception replies with the following string: & a a x y \ ck ck CR in which : x = character of decimal number, from 0 to 3 ( from 48 to 51 ASCII ) y = character of measure unit, from 0 to 2 ( from 48 to 50 ASCII ; 0 = kg,1 = g, 2 = t ) while in case of a wrong reception it replies with the following string: & & a a? \ ck ck CR

35 CHECK-SUM CALCULATION The check-sum is composed of 2 ASCII characters ( ck ck ) obtained using this procedure : - Consider just UNDERLINED characters. - Calculate the OR ESCLUSIVO ( XOR ) of the codes of the ASCII characters : the XOR operation will give as results: 1 when the number of one of the factors is odd, otherwise the result is 0. character cod. ASCII decimal cod. ASCII hexadecim. cod. ASCII binary t XOR = The result of XOR operation is composed of 2 hexadecimal characters ( number from 0 to 9 or letter from A to F ). - The check sum is composed of 2 characters representing the result of the XOR operation (hexadecimal notation - characters " 7 " and " 5 " ). Check sum calculated: $ 01 t 75 <CR> ( requested weight address 1) Microlectra bv. Hermanus Boerhaavestraat ME Oud-Beijerland. Netherlands. Tel 31(0) Fax 31(0) info@microlectra.nl

36 MODBUS PROTOCOL RTU The MODBUS-RTU protocol enables reading and writing of registers present in LAUMAS instruments, based on the standard addressing system provided in the reference guide of Modicon PI-MBUS-300. Pay special attention to the values sent to the instrument: these must remain within the ranges specified in the tables on the following pages (and must guarantee correct instrument operation). Some data will be written directly into a special memory named EEprom, which can be written a limited number of times only (100,000). Therefore avoid writing continuously in these locations. If not otherwise specified, numerical values are expressed as decimal values in the following pages (in case of 0x prefix values are expressed as hexadecimal). DATA FORMAT - 1 start bit; - 8 data bits, least significant bit; - no parity, odd or even parity. - 2 stop bit in case of no parity (n-8-2) - 1 stop bit in case of checking parity (O-8-1, E-8-1)

37 MODBUS SUPPORTED FUNCTIONS Among the commands available in the MODBUS-RTU protocol, only the following are used to manage communication with the instruments. Other commands may not be interpreted correctly and could generate errors or system shut-downs: FUNCTION DESCRIPTION 03 (0x03) READ HOLDING REGISTER 16 (0x10) PRESET MULTIPLE REGISTERS) INSTRUMENT RESPONSE TIMES The length of time that elapses between the end of the QUESTION string to the instrument and the start of the ANSWER string from the instrument varies between 5 msecs and 20 msecs (max). The length of time that must elapse between the end of the ANSWER string from the instrument and the start of the next QUESTION string to the instrument is 0.5 msec (min). In order to take into consideration the total time of a communication (QUESTION + ANSWER), the transmission times for the strings, which must be calculated according to the baud rate used, must be added to these. Example with 19200bit/sec BAUD RATE: a) 8 bytes QUERY (88 bits) = 4,6 msec b) max delay for response = 20 msec c) 8 bytes RESPONSE (88 bits) = 4,6 msec d) time before the next query = 0,5 msec total = 30 ms (33 communications / second) In general, a longer length of time must be considered to correctly handle the query loop. Some systems are very slow at correctly handling communication timing, resulting in a decrease in the number of queries possible in the unit of time. Where present, the DELAY parameter allows the instrument to respond to the system that is questioning it with a certain delay. This directly influences the number of queries possible in the unit of time. - The serial settings cannot be modified via the serial port itself. Operate manually using the instrument menus. - Modifications made will be active after switching off and on again. Modifications such as the delay time ( Delay ) and the instrument s address ( Address ), however, are active immediately

38 MODBUS RTU PROTOCOL for WT60000 BASE For more information see the reference guide of Modicon PI-MBUS-300. MODBUS RTU supported functions are only READ HOLDING REGISTER and PRESET MULTIPLE REGISTER. Maximum number of writing registers : 6. R = READING register W = WRITING register LIST OF HOLDING REGISTERS Address Description R/W Instrument Error R Gross weight H R Gross weight L R Decimal point R Status Register R Net weight H R Net weight L R Decimal Point R Peak H R Peak L R Decimal Point R SetPoint 1 H R/W SetPoint 1 L R/W Decimal Point R SetPoint 2 H R/W SetPoint 2 L R/W Decimal Point R SetPoint 3 H R/W SetPoint 3 L R/W Decimal Point R SetPoint 4 H R/W SetPoint 5 L R/W Decimal Point R INPUTs/OUTPUTs R/W Command Register W

39 ERRORS CODE OF ADDRESS Instrument Error address Conditions Meanings No Error The instrument is working Out of scale The signal of the load cell is higher the maximum value of 19 mv/v overload The weight value is nine divisions higher than capacity ( CAPAC parameter) underload The weight value is lower than The display will show LIST OF BIT OF ADDRESS Status Register When bit is equal to 1 means the following conditions: Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit fixed fixed fixed fixed fixed fixed Negative Gross Sign Negative Net Sign Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Out of Over Under Valid Tare Minimum 1 0 scale load load weight condition weighing fixed centre Minimum weighing = value set into 0 SEt parameter. Tare condition = Net Weight function activated. LIST OF BIT OF ADDRESS Input/Output In In Out Out Out Out In case of register writing, bit from 4 to 15 will be not considered. LIST OF FUNCTION OF ADDRESS Command Register Command Register allows the following commands: Function Command 0007 Net weight 0008 Semiautomatic zero 0009 Gross weight 0010 Restore Check Output as SetPoint 0021 Keyboard lock 0022 Keyboard unlock

40 RS 232 CONNECTION CABLE BETWEEN WT60 AND PC WT60 (COM) PC POLES MALE 9 POLES FEMALE Microlectra bv. Hermanus Boerhaavestraat ME Oud-Beijerland. Netherlands. Tel 31(0) Fax 31(0) info@microlectra.nl

41 RS 485 CONNECTION AMONG INSTRUMENTS WT60 LAST CONNECTION FIRST CONNECTION WT60 - WL60 - WR WT60 - WL60 - WR WT60 - WL60 - WR GND RX+ TX+ TX- RX- GND RX+ TX+ TX- RX- GND RX+ TX+ TX- RX PIN MALE SOLDER CONNECTOR 9-PIN MALE SOLDER CONNECTOR 9-PIN MALE SOLDER CONNECTOR 130 ohm MAX LENGHT 500 METERS 24 VDC + _ Connect the shield to the connector casing TX + TX - Vin RX + RX - CONVERTER CONVLAU 0 TX RX CONNECTOR DB9P female