Installation, Operation and Maintenance Manual. Sample Sequencer IV SPD Rev. 7 01/09

Transcription

1 Installation, Operation and Maintenance Manual Sample Sequencer IV SPD Rev. 7 01/09 SENTRY EQUIPMENT CORP PO Box 127 Oconomowoc, WI USA Phone: Fax: sales@sentry-equip.com

2 Sample Sequencer IV Certification Certification The Sample Sequencer IV has been tested and is certified to the following standards: Product Safety: Certified to CAN/CSA C22.2 No (Certificate # ) Certified to ANSI/ISA S Low Voltage Directive 73/23/EEC Required Standards include: EN :2001/IEC :2001 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements Electromagnetic Compatibility: EMC Directive 89/336/EEC: Required Standards include: EN 61326:1997 / IEC 61326:1997 w\a1:1998 & A2:2001 Electrical equipment for measurement, control, and laboratory use EMC requirements - Part 1: General requirements Immunity: Required tests include: IEC ESD IEC Radiated Susceptibility IEC EFT IEC Surges IEC RF Cond. IEC Magnetic Susceptibility IEC Volt dips, interrupts Emissions: Required tests include: EN Class A limits EN Harmonic EN Voltage Fluctuation (Flicker) RoHS Compliance: Directive 2002/95/EC This product complies with the RoHS Directive.

3 Sample Sequencer IV Table of Contents TABLE OF CONTENTS SPECIFICATIONS...1 SAFETY PRECAUTIONS...3 Use of Hazard Information...3 Definitions...3 QUICK START GUIDE...5 GENERAL DESCRIPTION...7 Modes of Operation...7 Inputs and Outputs...11 Optional Manifold Sampling Valve...12 OPERATION...13 Description of Controls...13 Screen Descriptions...15 Operation Screen...16 Main Menu...17 Sample/Bypass...17 Historical Data...18 Setup...18 Sequence...19 Timers...19 I/O Calibration...20 Scale...20 Input Calibration...21 Output Calibration...21 Test Outputs...22 Clock...22 Point Descriptions...23 Setup Continued...23 Analyzer Descriptions...24 Mode...24 Valve Assignment...25 Operating Modes...26 Continuous...26 Batch...28 Valve Outputs...29 INSTALLATION...30 Unpacking...30 Mounting...30 Pole Mounting...31 Wall Mounting...32 Panel Mount...33 i

4 Sample Sequencer IV Table of Contents Electrical Connections...36 Relay Board Connections...36 Power Connection...36 Point Identification and Alarm Connections...37 Track and Hold Board Connections...37 CPU Board Connections...38 Valve Output Connections...38 Analog Input Connections...38 Analyzer Alarm Connections...38 Calibration Hold Connections...39 End of Batch Connections...39 MODBUS Connections...39 Starting Up The Sample Sequencer...42 MAINTENANCE...43 Cleaning...43 Rechargeable Battery...43 Fuses...43 Disassembly...44 Calibration...44 Analog Input Calibration...44 Analog Output Calibration...45 TROUBLESHOOTING GUIDE...46 FACTORY ASSISTANCE...47 SPARE PARTS LIST...48 ACCESSORIES...49 WARRANTY...50 APPENDIX A - RECOMMENDED PIPING...52 APPENDIX B USING A SEQUENCER WITH HACH SERIES 5000 ANALYZER...53 APPENDIX C LCD AVAILABLE CHARACTERS...56 APPENDIX D MODBUS Registers...58 ii

5 Sample Sequencer IV Table of Contents List of Figures Figure 1 - Sample Sequencer with Continuous Analyzer... 8 Figure 2 - Sample Sequencer with Batch Analyzer... 9 Figure 3 Sample Sequencer with two Analyzers Figure 4 Sample Sequencer Front Panel Figure 5 Screen Navigation Figure 6 Operation Screen Figure 7 Main Menu Figure 8 Sample/Bypass Figure 9 Historical Data Figure 10 Setup Screen Figure 11 Set Sequence Screen Figure 12 Timers Screen Figure 13 I/O Calibration Figure 14 Set Scale Figure 15 Input Calibration Figure 16 Selecting Channel to Calibrate Figure 17 Output Calibration Figure 18 Selecting Channel to Test Figure 19 Test Outputs Figure 20 Set Clock Screen Figure 21 Set Sample Descriptions Screen Figure 22 Continued Setup Screen Figure 23 Set Analyzer Descriptions Screen Figure 24 Mode Selection Screen Figure 25 Valve Assignment Screen Figure 26 Continuous Mode Timing Diagram Figure 27 Batch Mode Timing Diagram Figure 28 Enclosure Dimensions Figure 29 Pole Mounting the Sample Sequencer Figure 30 Wall Mounting the Sample Sequencer Figure 31 Mounting Bracket Dimensions Figure 32 Panel Mount Dimensions Figure 33 Panel Mounting Figure 34 Relay Board iii

6 Sample Sequencer IV Table of Contents Figure 35 Track and Hold Board...38 Figure 36 CPU Board Figure 37 Electrical Wiring Diagram...40 Figure 38 Electrical Wiring Diagram...41 Figure 39 Electrical Wiring Diagram...41 Figure 40 Recommended Sample Conditioning Figure 41 Wiring to a Hach Series 5000 Analyzer Figure 42 LCD Character Chart Figure 43 Scrolling Through the Character List Figure 44 MODBUS Setup iv

7 Sample Sequencer IV Table of Contents List of Tables Table 1 Control Descriptions Table 2 Power Cord Requirements Table 3 Troubleshooting Guide Table 4 MODBUS Registers v

8 Sample Sequencer IV Specifications SPECIFICATIONS Specifications are subject to change without notice. Applications: The Sample Sequencer is designed to support sample stream switching in the batch or continuous modes. Maximum Number of Samples: 8 Maximum Number of Analyzers: 2 Power: Input Voltage: Vac Frequency Range: 50/60 Hz Input Current: 1 A / 115 V 0.7 A / 230 V Inputs from Analyzer: Two analog inputs: 0-20 ma or 4-20 ma (59 Ω load) Two digital inputs for end-of-analysis indication. Two digital inputs for calibration indication. Two digital inputs for analyzer system alarm indication. Outputs: MODBUS communication port on an RS-485 network. Valve outputs (12 VDC) to control a maximum of eight solenoid valves for sample stream switching. Ten DPDT relays for point number indication and replicated Analyzer Alarms. Contact ratings: Maximum operating voltage: 250 VAC, 220 VDC. Maximum operating voltage: 130 V (CSA certification) Maximum switching capacity: 30 W, 62.5 VA inductive; 60 W, 125 VA resistive. Current Outputs: Eight isolated 0 20 or 4 20 ma outputs. Isolation: 550 VAC Maximum Load: 600 Ω Nominal Accuracy: Analog Inputs: ± % full scale Analog Outputs: ± 0.2% full scale Resolution: Analog Inputs: µa/lsb Analog Outputs: µa/lsb Data Logging: 255 Records Keypad: Seven tactile feedback membrane switches. 1

9 Sample Sequencer IV Specifications Display: Four line by 20 character Vacuum Fluorescent Display (VFD). Enclosure: NEMA 4X (indoor), IP 66 Dimensions: 8.93 (226.8 mm) H x 9.63 (224.6 mm) W x 6.76 (171.7 mm) D (with mounting bracket) Mounting: Panel, surface or pipe mount. Ambient Temperature: 0-50 C ( F); RH 95% max. non-condensing at 40 C (104 F) max. Operating Altitude: m ( ft.) (Consult factory for other altitudes.) Agency Approvals: Shipping Weight: 6 lbs (2.72 kg) 2

10 Sample Sequencer IV Safety Precautions SAFETY PRECAUTIONS Please read the entire manual before attempting to unpack, set up or operate this product. Pay careful attention to all warnings, cautions and notes. Failure to do so could result in serious personal injury or equipment damage. Use of Hazard Information If multiple hazards exist, the signal word corresponding to the greatest hazard shall be used. Definitions Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage. NOTE Information that requires special emphasis SHALL This word understood to be mandatory SHOULD This word understood to be advisory 3

11 Sample Sequencer IV Safety Precautions Indique une situation imminente et dangeureuse qui doit être évité immédiatement afin d éviter tout risque de blessures sérieuses et qui pourrait même entraîner la mort. AVERTISSEMENT Indique une situation potentiellement dangeureuse et qui doit être évité immédiatement afin d éviter tout risque de blessures sérieuses et qui pourrait même entraîner la mort. PRÉCAUTION Indique une situation potentiellement dangeureuse et qui doit être évité immédiatement afin d éviter tout risque de blessures mineures. PRÉCAUTION ATTENTION une utilisation sans le symbole de sécurité indique une situation potentiellement dangeureuse et que si elle n est pas évité, pourrait entrainer des dommages à la propriété. NOTE Informations requérant une attention spéciale DOIT Ce mot indique une obligation POURRAIT Ce mot indique un avertissement 4

12 Sample Sequencer IV Quick Start Guide QUICK START GUIDE The following guide is intended to help you get started using the Sentry Sample Sequencer. This guide does not include detailed explanations and should be used in conjunction with the remainder of this manual to build a full understanding of the Sample Sequencer. Electrical Connections Connect all electrical connections necessary for the application. If the analyzer being shared is a batch type analyzer, an end of analysis signal must be connected to the Sequencer End of Batch input. Without this signal, the Sequencer will never advance to the next sample. Starting and Stopping the Sequencer With the display showing the Operation Screen, press the ENTER key to toggle Sequencer 1 on and off. Press the ESC key to toggle Sequencer 2 on and off. Setting the Sequence With the display showing the Operation Screen, press the MENU key to display the MAIN MENU. Using the ENTER and arrow keys, go to SETUP and then SEQUENCE. Edit the sequence by using the up arrow ( ) and down arrow ( ). Move locations within the sequence using the right arrow ( ) and left arrow ( ). Toggle between sequences using the ENTER key. Use the ESC key to exit the SET SEQUENCE screen. Changes to the sequence are automatically saved as you make them. Placing Samples in Sample/Bypass Using the same technique as above, use the keypad to navigate to MAIN MENU, SAMPLE/BYPASS. In this screen, the character S indicates the sample point will be Sampled. The character B indicates the sample point will be Bypassed the next time its position in sequence is up. Use the and keys to change between Sample and Bypass. Use the and keys to move between sample points. Use the ESC key to exit the SAMPLE/BYPASS screen. Setting Sample Timers Using the same technique as above, use the keypad to navigate to MAIN MENU, SETUP, TIMERS. The flashing digits indicate the current field being edited. Use the and keys to change the value. Use the and keys to move between fields. Use the ENTER key to cycle through the sample points. Use the ESC key to exit the SET TIMERS screen. Setting the Mode Using the same technique as above, use the keypad to navigate to MAIN MENU, SETUP, MORE, MODE. Use the ENTER key to toggle between Continuous and Batch. Use the and keys to move between SEQ1 and SEQ2. Use the ESC key to exit the MODE screen. Setting the Valve Assignment Using the same technique as above, use the keypad to navigate to MAIN MENU, SETUP, MORE, VALVE ASSIGNMENT. Use the and keys to change the valves assigned to SEQ1. If all eight channels are not assigned to SEQ1, the remaining channels will be assigned to SEQ2. Use the ESC key to exit the VALVE ASSIGNMENT screen. The SET SEQUENCE screen will automatically appear after the VALVE ASSIGMENT screen. Editing the Sample Names Using the same technique as above, use the keypad to navigate to MAIN MENU, SETUP, PT DESC. The flashing character indicates the current character being edited. Use the and keys to change the character. Use the and keys to move between characters. Use the ENTER key to cycle through the sample points. Use the ESC key to exit the SET DESCRIPTIONS screen. Editing Analyzer Descriptions 5

13 Sample Sequencer IV Quick Start Guide Using the same technique as above, use the keypad to navigate to MAIN MENU, SETUP, MORE, AIT DESCRIPTIONS. The flashing character indicates the current character being edited. Use the and keys to change the character. Use the and keys to move between characters. Use the ESC key to exit the SET ANALYZER DESCRIPTIONS screen. 6

14 Sample Sequencer IV General Description GENERAL DESCRIPTION The SENTRY Sample Sequencer is a microprocessor-based instrument capable of electronically switching up to eight sample streams one at a time to an analyzer and of providing signals to recorders. If a total of eight sample streams are not needed for one process, the remaining points may be assigned to a second analyzer. A Sentry manifold sampling valve specially designed to obtain optimum representative samples is available for sample stream switching with the Sample Sequencer. The Sample Sequencer reduces the number of required analyzers while maintaining equivalent data accuracy. Reliable sample analysis comparison is obtained by using a Sample Sequencer with one dedicated analyzer. In addition, significant operating cost savings are obtained by not having to install, maintain and service multiple analyzers. The Sample Sequencer is capable of operating in the continuous mode for continuous-type analyzers or in the batch mode for batch-type analyzers. In addition, the Sequencer is capable of measuring the analyzer analog output signal and converting the analog signal to digital data to be sent out via the Sequencer s MODBUS communication port. Using the MODBUS capability, one can connect a PC via twisted pair cable to one or more Sequencers for remote monitoring, control and data acquisition. Track and Hold outputs are available to provide independent, isolated outputs for each sample point. Contact closures are also available to provide channel number indication as well as replicating analyzer alarms. Figures 1-3 illustrate a typical system arrangement for sample stream switching with the Sample Sequencer. Customer-supplied equipment is shown for clarification. Modes of Operation The Sample Sequencer has two programmable modes of operation: BATCH Used for analyzers that take a sample "bite" (or batch), produce an analytical result and then provide a contact signal output, in typically one to 20 minutes. CONTINUOUS Used for analyzers that continuously produce an analytical result. NOTE If using the Sample Sequencer with a Hach analyzer, see Appendix B. 7

15 Sample Sequencer IV General Description Figure 1 - Sample Sequencer with Continuous Analyzer 8

16 Sample Sequencer IV General Description Figure 2 - Sample Sequencer with Batch Analyzer 9

17 Sample Sequencer IV General Description Figure 3 Sample Sequencer with two Analyzers 10

18 Sample Sequencer IV General Description Inputs and Outputs A variety of inputs and outputs are available on the Sample Sequencer. Analog Inputs: Two analog inputs are located on the CPU board for reading a 0 20 ma or 4 20 ma signal from two different analyzers. The Sequencer converts this signal into Engineering Units for display and outputs the same signal on the Track and Hold board. Analyzer Alarm Inputs: Two analyzer alarm inputs are located on the CPU board. These inputs are used to indicate a loss of sample flow to the analyzer. An analyzer alarm will cause the analyzer description to flash on the operation screen. When the Sequencer is used in the Continuous mode, an analyzer alarm will immediately close the active sample valve and open the next sample valve. That sample valve will remain open until the analyzer alarm clears or one minute elapses. After one minute, the Sequencer will open the next sample valve. The Sequencer will continue trying to establish flow every minute until the analyzer alarm clears. When the Sequencer is used in the Batch mode, an analyzer alarm will not immediately close the active sample valve. Instead, when the analyzer alarm is received, the Sequencer will start a timeout timer. If the Sequencer does not receive an End of Batch indication from the analyzer or the alarm does not clear before that timeout timer, the Sequencer will close the current sample valve and open the next valve in the sequence. If the End of Batch indication is received before the timeout timer, the Sequencer assumes the alarm is not a loss of flow and continues with normal operation. The operator can adjust the timeout timer by setting each sample s Sample Timer. Calibration Hold Inputs: Two calibration hold inputs are located on the CPU board. These inputs are used to indicate the analyzer is performing a calibration. The calibration hold inputs do not perform a function when the Sequencer is in the Batch mode. In the Continuous mode, the Sequencer will wait at the active sample with the valve open when a calibration indication is received. Once the calibration indication clears, the Sequencer will resume operation entering the Flush state for the sample that was active before the calibration hold indication was received. End of Batch Inputs: Two End of Batch inputs are located on the CPU board. These inputs are used to indicate when a batch type analyzer is finished taking a measurement. Without this input connected, the Sequencer will never advance to the next sample when the Sequencer is in the Batch mode. The End of Batch inputs are not used in the Continuous mode. Valve Outputs: Eight valve outputs are located on the CPU board. These outputs supply 12 VDC to operate the sample valves. The eight valves may be divided between two analyzers in any combination. The only requirement is the valves assigned to an analyzer must be consecutive points in the Sequencer. Track and Hold Outputs: Eight individually isolated analog outputs are provided on the Track and Hold board. These outputs are capable of 0-20 ma or 4-20 ma outputs. When a valid reading is taken from the analyzer for a given sample, the Sequencer updates ( Tracks ) the corresponding signal on the Track and Hold board. When the sample is not currently being analyzed, the Sequencer Holds the corresponding signal on the Track and Hold board at its last known value. Relay Outputs: A total of ten individually fused dry contacts are available on the Relay board. Two of these outputs are used to replicate the two-analyzer alarm inputs while the remaining eight are used for 11

19 Sample Sequencer IV General Description sample point indication. A closed contact indicates the point is currently being sampled and the analyzer reading corresponds to that sample point. MODBUS Communications: The Sequencer is capable of connecting to an RS-485 network for communicating to a PC or control system via MODBUS. For more information on this feature, refer to Appendix D. Optional Manifold Sampling Valve Although the Sample Sequencer may be used to control most manifold valve arrangements, the Sentry Manifold Sample Valve offers a convenient optional accessory to obtain a representative sample. The patented design incorporates block and bleed design and provides continuously flowing samples with no areas for cross contamination to occur. The valve is available with a variety of DC and AC solenoid coils and comes in either four or eight sample line models. Contact Sentry for more information about this special sampling valve. 12

20 Sample Sequencer IV Operation OPERATION To ensure the protection provided by this equipment is not impaired, this equipment must not be installed or used in any manner other than that which is specified in this manual. AVERTISSEMENT Afin de s assurer que la protection prévue par cette pièce d équipement n est pas défaillante, cet équipement ne doit pas être installé ou utilisé de manière autre que spécifié dans le manuel. Description of Controls Figure 4 and Table 1 describe controls on the Sample Sequencer membrane switch display. DESCRIPTION MENU key ENTER key ESC key Arrow keys Cursor FUNCTION From the operation screen, pressing the MENU key will display the main menu. From the operation screen, pressing the ENTER key will toggle SEQ1 on and off. While navigating through the menu screens, pressing the ENTER key will select the option indicated by the cursor ( ). When editing sample names, timers and sequences, pressing the ENTER key will select the next sample point to edit. From the operation screen, pressing the ESC key will toggle SEQ2 on and off. While in the menu screens, pressing the ESC key will exit the current screen. Any changes are automatically saved. While navigating through the menu screens, use the arrows keys to move the cursor to the option you want to choose. While editing character fields and timers, use the arrow keys to move between fields and to change the value in the current field. Indicates the cursor position on the menu screens. Table 1 Control Descriptions 13

21 Sample Sequencer IV Operation Figure 4 Sample Sequencer Front Panel 14

22 Sample Sequencer IV Operation Screen Descriptions Operation Screen Main Menu Sample/Bypass Historical Data Setup Sequence Timers I/O Cal Cloc k Point Description More Scale Input Cal Output Cal Test Analyzer Descriptions MODBUS Mode Valve Assignment Figure 5 Screen Navigation 15

23 Sample Sequencer IV Operation Operation Screen The operation screen is the main screen on the Sample Sequencer. This screen contains all the information indicating the state of the Sequencer. Sequencers are started and stopped from this screen. Analyzer Description Open Sample Valve Number and Name S E Q 1 1 S A M P L E 1 N A M E S A M P L E 2 0 : P P B S E Q 2 S A M P L E 8 N A M E S A M P L E 7 N A M E Sequencer 1 Display Status Sequencer 2 Display Open Sample Valve Name Previous Sample and Value Figure 6 Operation Screen Figure 6 shows a typical operation screen for the Sample Sequencer. The top two lines display the status of Sequencer 1 running in the Continuous mode. The bottom two lines display the status of Sequencer 2 running in the Batch mode. Starting/Stopping Sequencers: Sequencers are started and stopped from the operation screen. To toggle SEQ1 on and off, press the ENTER key. To toggle SEQ2 on and off, press the ESC key. Analyzer Description (Continuous and Batch modes): This is a user definable field that describes the analyzer being sequenced. The maximum number of characters is four. When an analyzer alarm is received, this description will flash. Open Sample Valve Number and Name (Continuous): This displays the valve number and the sample description for the currently open valve. Status (Continuous): This displays the state of the Sequencer, time remaining, and value. The three available states are FLUSH and SAMPLE and OFF. The time displayed is the time remaining in the current state. The value is only displayed when the Sequencer is in the SAMPLE state. Open Sample Valve Name (Batch): This displays the sample description of the currently open valve. 16

24 Sample Sequencer IV Operation Previous Sample and Value (Batch): This displays the description of the previously sampled point and its value. The value on the analyzer corresponds to this sample point. Main Menu M E N U S A M P L E / B Y P A S S H I S T O R I C A L D A T A S E T U P Figure 7 Main Menu Figure 7 shows the main menu screen. The main menu screen is reached by pressing the MENU key from the operation screen. The cursor indicates the option you wish to choose. Move the cursor by using the and keys. Select the option by using the ENTER key. To exit this screen and return to the operation screen, press the ESC key. Sample/Bypass Sample streams may be temporarily skipped in the sequence by placing the sample point number in Bypass. To place the point back in the sequence, place the sample point number in Sample. If the Sample Sequencer is currently on a sample point that you place in Bypass, the Sample Sequencer will immediately skip to the next point in the sequence. Occasionally, it is necessary to hold an analysis on one sample point. To accomplish this, simply place all the undesired sample points in Bypass. Sample points are placed in either Sample or Bypass by using the Sample/Bypass screen. Point Number S = Sample B = Bypass S A M P L E / B Y P A S S S B S S B B B S Figure 8 Sample/Bypass Figure 8 shows the Sample/Bypass screen. Use the key to place a point in Sample and the key to place a point in Bypass. When a point that is placed in Bypass is next to be sequenced, the point will be skipped and the next point that is in Sample will be sequenced. The flashing character indicates the sample point being edited. To move between sample points, use the and keys. To exit this screen, use the ESC key. 17

25 Sample Sequencer IV Operation Historical Data Date Stamp Month / Day New Data Old Data H I STOR I CAL DATA 1 1 / : SAMPLE 2 NAME Historical Value Time Stamp Hours : Minutes Sample Number and Description Figure 9 Historical Data Figure 9 shows the Historical Data screen. The historical logger is capable of storing the last 255 values. The Date Stamp and Time Stamp are taken the moment the data is logged. Note: The Date Stamp does not show the year and the Time Stamp is in 24-hour mode. The New Data indication ( ) indicates more recent data is available for viewing. The Old Data indication ( ) indicates older data is available for viewing. Use the key to view the more recent data and the key to view the older data. To exit, use the ESC key. Setup S E T U P S E Q U E N C E C L O C K T I M E R S P T D E S C I / O C A L M O R E Figure 10 Setup Screen Figure 10 shows the Setup Screen. The cursor indicates the option you wish to choose. Move the cursor within a column by using the and keys. Move the cursor between columns by using the and keys. Select the option by using the ENTER key. To exit this screen and return to the Main Menu screen, press the ESC key. 18

26 Sample Sequencer IV Operation Sequence The order that the Sample Sequencer opens sample points can be customized. The sequence for each sequencer is edited from the Set Sequence screen. S E T S E Q U E N C E R S E T S E Q U E N C E R Figure 11 Set Sequence Screen Figure 11 shows the Set Sequence screen. Each sequence contains 16 positions and are freely editable. The only limitation is the highest point number that can be assigned to Sequencer 1 and the lowest point number that can be assigned to Sequencer 2. For example, if valves 1 4 are assigned to Sequencer 1, then 4 is the largest sample point number that can be assigned to Sequencer 1 and 5 is the lowest point number that can be assigned to Sequencer 2. If Sequencer 2 is not displayed, then all eight sample points are assigned to Sequencer 1. In order to set Sequencer 2, the valve assignment must be changed in the Valve Assignment screen. The flashing number indicates the current step in the sequence being edited. To change the number, use the and keys. To move between steps in the sequence, use the and keys. Use the ENTER key to toggle between Sequencer 1 and Sequencer 2. To exit this screen and return to the Setup screen, use the ESC key. Timers T I M E R S 1 SAMPLE 1 NAME S A M P L E F L U S H 2 0 : : 0 0 Description of sample point being edited Figure 12 Timers Screen Figure 12 shows the Timers screen. Each sample point has Sample and Flush timers that can be set individually. In the Continuous mode, the Flush time is the amount of time the analyzer is flushed out before the analyzer reading is considered valid. The Sample time is the amount of time the analyzer is allowed to analyze the sample while the reading is considered valid. The Track and Hold value and Point Identification are active during the Sample time. The valve for this sample point is open during both the Sample time and the Flush time. In the Batch mode, the Flush time is not used. The Sample time serves as a timeout timer that operates only when the analyzer is in alarm. While in alarm, if an End-of-Batch signal is not received before the Sample time times out, the Sample Sequencer will close the current sample point and proceed with the next sample point. Since the Analyzer Alarm input may serve to indicate more than a loss of sample flow, the Sample time should be set to give the analyzer sufficient time to attempt to complete an analysis and output an End-of-Batch indication. 19

27 Sample Sequencer IV Operation The flashing number indicates the current number being edited. To change the number, use the and keys. To move between numbers, use the and keys. To cycle through the eight sample points, use the ENTER key. To exit this screen and return to the Setup screen, use the ESC key. I/O Calibration I / O CAL I BRAT I ON S C A L E T E S T I N P U T C A L O U T P U T C A L Figure 13 I/O Calibration Figure 13 shows the I/O Calibration Screen. The cursor indicates the option you wish to choose. Move the cursor within a column by using the and keys. Move the cursor between columns by using the and keys. Select the option by using the ENTER key. To exit this screen and return to the Setup screen, press the ESC key. Scale S C A L E M I N M A X S E Q P P B S E Q m A Figure 14 Set Scale Figure 14 shows the Set Scale screen. This screen allows the analog input value to be displayed in engineering units. To display engineering units, the scale should be set to the same range as the analyzer. The flashing field indicates the current field being edited. To change the value, use the and keys. To move between fields, use the and keys. The scales can be incremented and decremented by a factor of 100 by holding the ENTER key while using the and keys. The units can be selected from the built in values PPB, PPM, ug, ma, ph, and us. To exit this screen and return to the I/O Calibration screen, press the ESC key. 20

28 Sample Sequencer IV Operation Input Calibration A N A L O G I N P U T 1 C A L I N P U T 0 / 4 m A O F F S E T R A W C O U N T Figure 15 Input Calibration Figure 15 shows the Analog Input Calibration screen. For more information on calibrating the inputs, please refer to the Maintenance section of this manual. Output Calibration A NALOG OUTPUT CAL CHANNEL 1 Figure 16 Selecting Channel to Calibrate Figure 16 shows the first screen displayed once OUTPUT CAL is selected from the I/O Calibration screen. This screen selects the output channel to calibrate. For more information on calibrating the outputs, refer to the Maintenance section of this manual. A NALOG OUTPUT CAL CHANNEL 1 O U T P U T 0 / 4 m A O F F S E T Figure 17 Output Calibration Figure 17 shows a typical output calibration screen. For more information on calibrating the outputs, refer to the Maintenance section of this manual. 21

29 Sample Sequencer IV Operation Test Outputs A N A L O G O U T P U T T E S T CHANNEL 1 Figure 18 Selecting Channel to Test Figure 18 shows the first screen displayed once TEST is selected from the I/O Calibration screen. This screen selects the Track and Hold output channel to test. To change channels, use the and keys. To select the channel, press the ENTER key. To exit this screen and return to the I/O Calibration screen, press the ESC key. A N A L O G O U T P U T T E S T CHANNEL % Figure 19 Test Outputs Figure 19 shows the Test Outputs screen, which is displayed after a channel has been selected. To change the output levels, use the and keys. The 5 available output levels are 0%, 25%, 50%, 75%, and 100% of full scale. To exit this screen and return to the Select Channel to Test screen, press the ESC key. Clock The Sample Sequencer contains a real time clock that provides the time and date stamp for the historical logger. The real time clock is set from the Set Clock screen. S E T C L O C K 1 5 : 2 3 : / 3 1 / 0 2 Figure 20 Set Clock Screen Figure 20 shows the Set Clock Screen. The flashing number indicates the number being edited. To change the number, use the and keys. To move between numbers, use the and keys. Note: The time should be set using the 24-hour mode. To exit this screen and return to the Setup screen, use the ESC key. 22

30 Sample Sequencer IV Operation Point Descriptions The factory default for each sample point description is in the form of SAMPLE 1 NAME. These descriptions may be changed from the Set Sample Descriptions screen. Refer to Appendix C for a guide of available characters. S E T D E S C R I P T I O N S 1 S A M P L E 1 N A M E Figure 21 Set Sample Descriptions Screen Figure 21 shows the Set Sample Descriptions screen. The flashing character indicates the field being edited. To change the character, use the and keys. To move between characters, use the and keys. To cycle through the eight sample points, use the ENTER key. To exit this screen and return to the Setup screen, use the ESC key. Setup Continued S E T U P C O N T I N U E D A I T D E S C R I P T I O N S M O D E V A L V E A S S I G N M E N T Figure 22 Continued Setup Screen Figure 22 shows the Continued Setup screen. The cursor indicates the option you wish to choose. Move the cursor by using the and keys. Select the option by using the ENTER key. To exit this screen and return to the Setup screen, press the ESC key. 23

31 Sample Sequencer IV Operation Analyzer Descriptions The factory defaults for the analyzer descriptions are SEQ1 and SEQ2. These descriptions may be changed using the Set Analyzer Descriptions screen. Refer to Appendix C for a guide of available characters. S E T A N A L Y Z E R D E S C R I P T I O N S S E Q 1 S E Q 2 Figure 23 Set Analyzer Descriptions Screen Figure 23 shows the Set Analyzer Descriptions screen. The flashing character indicates the field being edited. To change the character, use the and keys. To move between characters, use the and keys. To exit this screen and return to the Continued Setup screen, use the ESC key. Mode The Sample Sequencer is capable of operating in two different modes, depending on the type of analyzer being used. The continuous mode is for continuous output analyzers such as sodium, conductivity, ph, O 2, some colorimetric, and many others. The batch mode is for analyzers that take a "bite" or batch of sample and then spend some time analyzing it before outputting a new fixed analog signal. The mode is changed from the Mode Selection screen. M O D E S EQ1 CONT I NUOUS S E Q 2 B A T C H Figure 24 Mode Selection Screen Figure 24 shows the Mode Selection screen. The cursor indicates the current Sequencer being edited. To change the mode, use the ENTER key to toggle between BATCH and CONTINUOUS. Use the and keys to move between Sequencers. To exit this screen and return to the Continued Setup screen, use the ESC key. 24

32 Sample Sequencer IV Operation Valve Assignment The Sample Sequencer can sequence eight sample points to an analyzer. If all eight points are not needed for one analyzer, the remaining sample points may be assigned to a second analyzer. Assigning all eight points to SEQ1 will suppress information in other screens for SEQ2. The sample points are assigned to a sequencer using the Valve Assignment screen. V A L V E A S S I G N M E N T S E Q Figure 25 Valve Assignment Screen Figure 25 shows the Valve Assignment Screen. This screen assigns the valves to Sequencer 1. The remaining valves not assigned to Sequencer 1 are automatically assigned to Sequencer 2. Note: Assigning one valve or seven valves to Sequencer 1 is not allowed. Use the and keys to change the valve assignment. To exit this screen and enter the Set Sequence screen, use the ESC key. 25

33 Sample Sequencer IV Operation Operating Modes Continuous This mode is for continuous output analyzers such as sodium, conductivity, ph, O 2, some colorimetric, and many others. Timing Considerations for the Continuous Mode Figure 26 illustrates the timing diagram for the continuous mode. The following considerations should be made when determining the timing for your system. Analyzer Alarm: An analyzer alarm will immediately close the active sample valve and open the next sample valve. That sample valve will remain open until the analyzer alarm clears or one minute elapses. After one minute, the Sequencer will open the next sample valve. The Sequencer will continue trying to establish flow every minute until the analyzer alarm clears. Calibration Hold: A calibration hold signal will cause the Sample Sequencer to wait at the active sample with the valve open. Once the calibration indication clears, the Sequencer will resume operation entering the Flush state for the sample that was active before the calibration hold indication was received. Flush Time: After switching to a successive stream, there will be a settling time for the analyzer to stabilize to the new sample. The analyzer analog output signal is ignored during this time. The necessary Flush time depends on the valve manifold design, sample line length from the manifold arrangement, sample velocity and analyzer response time. Sample Time: Sample Time is the time period during which a valid analyzer signal is read. Analog outputs are updated and point identification relay contacts are closed during this time. The necessary Sample time should be set long enough to recognize stable readings and to provide recording devices time to capture the data. 26

34 Sample Sequencer IV Operation Figure 26 Continuous Mode Timing Diagram 27

35 Sample Sequencer IV Operation Batch The batch mode is for analyzers that take a "bite" or batch of sample and then spend some time analyzing it before outputting a new fixed analog signal. Typical types are reagent additive, chromatographs, etc. When these analyzers have completed an analysis there is just one output value until the analyzer's next cycle is completed. An "End-of-Batch" contact closure signal must be provided at the conclusion of a batch by the batch type analyzers. The Hach Series 5000 analyzer operates in this manner. See Appendix B for instructions about connecting a Hach 5000 analyzer to the Sample Sequencer. Timing Considerations for the Batch Mode Figure 27 illustrates the timing diagram for the batch mode. Figure 9 demonstrates how each sample stream is switched when the analyzer outputs an end-of-batch signal to the Sample Sequencer. If the Sample Sequencer does not receive an end-of-batch signal, the Sample Sequencer will never advance to the next sample. Upon receiving an end-of-batch signal from the analyzer, the Sample Sequencer reads the analyzer value, updates the Track and Hold output, and closes the point identification relay. Note: The updated Track and Hold output and point identification relay are for the previous sample point. The open valve number will never match the closed relay point identification in the batch mode. The following considerations should be made when determining the timing for your batch mode system: End-of-Batch: The Sample Sequencer receives this signal when the analysis is completed and the analyzer is ready to begin a new analysis. Analyzer Alarm: The Sample Sequencer receives this signal when the analyzer is in alarm, such as a loss of sample flow condition. Once the analyzer alarm signal is received the Sample Sequencer will start the Sample timer and replicate the analyzer alarm for use by external recorders and control systems. Sample Time: The Sample time in the batch mode is a timeout timer that operates only when the analyzer is in alarm. While in alarm, if an End-of-Batch signal is not received before the Sample time times out, the Sample Sequencer will close the current sample point and proceed with the next sample point. Since the Analyzer Alarm input may serve to indicate more than a loss of sample flow, the Sample time should be set to give the analyzer sufficient time to attempt to complete an analysis and output an End-of-Batch indication. 28

36 Sample Sequencer IV Operation Figure 27 Batch Mode Timing Diagram Valve Outputs The Sample Sequencer switches sample streams to an analyzer using the valve outputs on the CPU board. These outputs provide 12 VDC to control solenoid valves. Sentry offers a manifold sample valve for use with the Sample Sequencer. With additional hardware, other solenoid valve operating voltages may be used. 29

37 Sample Sequencer IV Installation INSTALLATION This instrument should be installed by qualified technical personnel to ensure adherence to all applicable electrical codes. AVERTISSEMENT Cet instrument doit être installé par un technicien certifié afin d assurer que toutes les normes au code électrique sont respectées. To ensure the protection provided by this equipment is not impaired, this equipment must not be installed or used in any manner other than that which is specified in this manual. AVERTISSEMENT Afin de s assurer que la protection prévue par cette pièce d équipement n est pas défaillante, cet équipement ne doit pas être installé ou utilisé de manière autre que spécifié dans le manuel. Unpacking After carefully removing the Sample Sequencer from its shipping carton, inspect it for any damage. Report damages to the shipper at once. Mounting It is recommended the Sample Sequencer be mounted close to the analyzer to permit viewing of both devices at the same time. This allows the operator to control the Sample Sequencer while viewing the analyzer. The Sample Sequencer can mount easily to a panel, wall or pole. When mounting the Sequencer to a pole, the pole must have an outside diameter of ¾ to 1 ½ inches (19 to 38 mm). All mounting methods must be capable of supporting at least 24 pounds (10.9 kg). 30

38 Sample Sequencer IV Installation Figure 28 Enclosure Dimensions Pole Mounting 1. Obtain two U-bolts and nuts sized for the pole used for installation. 2. Press the back of the mounting brackets against a pole in the proper mounting position, either vertically or horizontally. 3. Place the curve of one U-bolt behind the pole, and insert the threaded ends of the bolt through two of the center holes on the mounting bracket. Refer to Figure Secure the two nuts with a wrench, and repeat steps 1-3 on the opposite end of the bracket. 31

39 Sample Sequencer IV Installation Figure 29 Pole Mounting the Sample Sequencer Wall Mounting 1. Remove the mounting bracket from the back of the Sample Sequencer. 2. Use the bracket as a template or use the dimension information shown in Figure 31 to mark positions on the wall for four of the eight screw holes either the vertical or horizontal pair. Position the device such that a minimum of two (2) mounting screws mount to a stud. 3. Reconnect the mounting bracket to the device. 4. Drill pilot holes in the marked positions for four ¼ -inch (M6) screws. 5. Use four ¼-inch (M6), hex-head or pan-head screws to secure the bracket and device to the wall. Figure 30 Wall Mounting the Sample Sequencer 32

40 Sample Sequencer IV Installation Figure 31 Mounting Bracket Dimensions Panel Mount 1. Turn off all power to the Sample Sequencer and disconnect all cables if necessary. 2. Use a Phillips screwdriver to remove the four screws holding the mounting bracket onto the back of the device. The mounting bracket is not needed for panel mounting. 3. Use a flat-blade screwdriver to loosen the screws of the enclosure lid. 4. Lift the lid off the device and set it aside. Or, store it by screwing the right side of the lid to the left side of the back enclosure. 5. Use a punch and hammer to remove the three knockouts on the inside rim of the back enclosure. Position the punch in the center of the knockout for best results. 6. Measure the panel hole using the dimension information given in Figure 32. Mark the panel for placement of three #10 (M4) pan-head screws. 7. Cut out the panel hole and drill three pilot holes for the screws. 8. Fit the Sample Sequencer into the panel hole and secure it with three #10 (M4) pan-head screws. 9. Make all wiring connections as described in the following sections. 10. Ensure that the gasket is properly seated in the lid and tighten the screws (10 in-lb, 1.13 N m maximum). Do not over tighten the screws. 33

41 Sample Sequencer IV Installation Figure 32 Panel Mount Dimensions 34

42 Sample Sequencer IV Installation Figure 33 Panel Mounting 35

43 Sample Sequencer IV Installation Electrical Connections Electrical Shock Hazard All input and output wiring should be installed in such a manner that access to bare copper is prohibited during normal operation. AVERTISSEMENT Avertissement de choc électrique- Tout le filage devra être installé de manière à éviter que toute partie de fil soit dénudé (sur le cuivre) durant l utilisation normale Access holes sized for ½ NPT (15 mm) and ¾ NPT (20 mm) electrical conduit fittings are provided on the bottom of the enclosure. Sealing type conduit fittings are required to maintain the enclosure s rating. Relay Board Connections The Sample Sequencer contains three circuit boards stacked in the enclosure. The relay board is located at the bottom of this circuit board stack. Located on the Relay board are the connections for point identification contacts, replicated alarm contacts, and the power supply. Power Connection The Sample Sequencer contains a universal power supply. The power supply is capable of accepting an input voltage range of VAC and frequency of 50 or 60 Hz. The Sequencer will automatically operate with power supplied in this range. A power supply lead of 16 AWG (1.3 mm 2 ) copper wire is recommended. It is recommended the Sequencer be connected to an electrical outlet or outlet strip with surge suppression and filtering. A suitable external over-current protection device such as a fuse or circuit breaker (15 A) is recommended for both the hot (L) and neutral (N) leads. Using this method, the plug will serve as the disconnect device. The cord and plug shall comply with the following standards: Location Cord Plug United States ANSI/UL 817 ANSI/UL 498 Canada CSA C22.2 No. 21 or C22.2 No. 49 CSA C22.2 No. 21 and C22.2 No. 42 European Community IEC or Appropriate IEC standard Table 2 Power Cord Requirements If desired, the Sample Sequencer may also be hard wired to instrument-quality power using appropriate certified conduit, fittings, and wiring. A suitable external over-current protection device, such as a fuse or circuit breaker (15 A), and disconnect device is recommended. The over-current protection and disconnect devices shall be installed on both the hot (L) and neutral (N) leads. The disconnect device shall be located near the equipment and marked with appropriate ON(1) OFF(O) markings as specified by local codes. For fixed wiring methods, the ground conductor shall have green with a yellow stripe as the insulation. Installation should be performed by qualified personal in accordance with local codes and procedures. Figures 34 and 39 show the power connection on the Relay board. 36

44 Sample Sequencer IV Installation Point Identification and Alarm Connections The Sample Sequencer provides individually fused dry contacts to indicate the current active channel. These connections may be used with a recorder or in situations where analog I/O at the receiving device is limited. In addition to these point identification contacts, replicated analyzer alarms are also located on the Relay board. Figures 34 and 39 show typical connections to the Relay board. Figure 34 Relay Board Track and Hold Board Connections The Track and Hold board provides individually isolated 0/4 20 ma signals to recorders or other data acquisition systems. The Track and Hold board is the middle board in the Sample Sequencer enclosure. Figures 35 and 38 show typical connections to the Track and Hold board. 37

45 Sample Sequencer IV Installation C1 RN6 PS1 C2 RN1 U1 VS1 U5 RN7 U13 PS2 U21 C VS2 U RN2 U2 VS3 U7 U14 PS3 RN8 U15 PS4 RN9 U22 U23 C3 VS4 RN3 U3 U8 RN10 U16 PS5 U24 VS5 RN4 U9 U17 PS6 RN11 U25 RN5 VS6 U4 U10 RN12 U18 PS7 U26 L1 J1 INTERFACE C4 VS7 VS9 U11 U19 PS8 RN13 U27 F1 J2 12V VS8 U28 U20 U12 C5 L2 C6 L3 C7 L4 C8 L5 C9 L6 C10 L7 C11 L8 C12 L9 C13 C30 C14 C15 C32 C16 C17 C34 C18 C19 C21 C23 C36 C20 C38 C22 C40 C24 C25 C42 C26 C27 C44 C28 C29 U29 C31 U30 C33 U31 C35 U32 C37 U33 C39 U34 C41 U35 C43 U36 C45 C46 C47 C48 C49 C50 C51 C52 C53 U37 C54 U38 C55 U39 C56 U40 C57 U41 C58 U42 C59 U43 C60 U44 U45 U47 U49 U51 U53 U55 U57 U59 U46 U48 U50 U52 U54 U56 U58 U60 R1 R17 R25 R2 R3 U61 R18 R26 R27 R4 R5 U62 R19 R28 R29 R6 R7 U63 R20 R30 R31 R8 R9 U64 R21 R32 R33 R10 R11 U65 R22 R34 R35 R12 R13 U66 R23 R36 R37 R14 R15 U67 R24 R38 R39 R16 U68 R40 RN14 C61 RN15 C62 RN16 C63 RN17 C64 RN18 C65 RN19 C66 RN20 C67 RN21 C68 Q1 VS10 D1 G D S C69 Q2 VS11 D1 G D S C70 Q3 VS12 D1 G D S C71 Q4 VS13 D1 G D S C72 Q5 VS14 D1 G D S C73 Q6 VS15 D1 G D S C74 Q7 VS16 D1 G D S C75 Q8 VS17 D1 G D S C TB TB TB TB TB TB TB TB8 Figure 35 Track and Hold Board CPU Board Connections The CPU board is the top board in the Sample Sequencer enclosure. Multiple functions are contained on the CPU board. Figure 36 shows the CPU board. Valve Output Connections The valve outputs of the Sample Sequencer output 12 VDC, intended for use with the Sentry Manifold Sample Valve. Other manifold valves may be used, however additional hardware such as interposing relays may be required. Typical valve connections are shown in Figure 38. Analog Input Connections Connect the analog signal from each analyzer to the analog inputs at connector TB1. Terminals marked 1 are used for analyzer 1. Terminals marked 2 are used for analyzer 2. When using the Sequencer with only 1 analyzer, connect the analog signal from the analyzer to terminals 1. Typical analog input connections are shown in Figure 37. Analyzer Alarm Connections Analyzer alarm signals are connected at TB2. Terminals marked A1 are used for analyzer 1. Terminals marked A2 are used for analyzer 2. When using the Sequencer with only 1 analyzer, connect the alarm signal from the analyzer to terminals A1. Typical analyzer alarm input connections are shown in Figure

46 Sample Sequencer IV Installation Calibration Hold Connections Analyzer calibration signals are connected at TB2. Terminals marked C1 are used for analyzer 1. Terminals marked C2 are used for analyzer 2. When using the Sequencer with only 1 analyzer, connect the calibration signal from the analyzer to terminals C1. Typical analyzer calibration input connections are shown in Figure 37. End of Batch Connections Analyzer end of batch signals are connected at TB2. Terminals marked B1 are used for analyzer 1. Terminals marked B2 are used for analyzer 2. When using the Sequencer with only 1 analyzer, connect the end of batch signal from the analyzer to terminals B1. Typical analyzer end of batch input connections are shown in Figure 37. MODBUS Connections MODBUS connections are made at TB5. The RS-485 network connection is made using a single twisted pair cable. For more information on using the MODBUS feature, refer to Appendix D. SEQUENCER CPU BOARD L25 VS2 C41 U6 R5 R6 SENTRY EQUIPMENT CORP. C D1 Y1 C51 L6 C55 L26 L7 C34 U7 RN29 U2 C12 C33 C56 R7 L27 L29 BAT1 R2 R8 RN5 C52 C57 L28 VS3 U8 R3 C59 ASM # C REV 0 SERIAL # R1 R4 L18 TB2 C35 RN23 VS4 C23 C36 RN20 RN24 L19 DISPLAY MOUNTING OUTLINE RN25 L20 C1 VS5 J4 C37 C38 RN26 J1 C5 L21 C8 RN21 U4 ISP C39 RN27 L22 VS6 J2 DISPLAY C40 RN22 RN28 C2 U3 C24 C25 C26 C27 C28 C29 C30 L17 RN9 VS7 RN14 L23 J6 1 JTAG RN10 VS8 C3 RN2 RN11 VS9 C13 RN12 VS10 FRONT PANEL VS11 C10 C11 C14 Y2 RN15 L8 L2 C9 RN7 C15 C42 VS12 J3 F2 L9 RN16 C43 Q1 VS13 F3 C7 U1 RN1 RN3 RN4 RN6 L10 C44 F4 VS14 L11 RN17 C45 Q2 F5 L1 L12 C46 F6 VS15 L13 RN18 C47 Q3 C6 F7 VS16 INTERFACE L4 C19 L14 C48 C4 RN8 LED1 L15 RN19 C49 F8 VS17 +5V Q4 C16 C60 F9 J5 12V C17 C53 VS18 C20 U5 F1 C50 L24 L3 C21 C31 VS1 L5 D2 C18 C22 LED2 RN13 +12V L16 U9 C32 C58 C54 R9 L30 L31 L32 ANALOG ANALOG INPUT 1 INPUT SHD TB1 DISCRETE INPUTS FOR USE WITH DRY CONTACTS ONLY B2 COM A2 COM C2 COM B1 COM A1 COM C1 COM TB3 VALVES FOR USE WITH 12V DC VALVES VALVES FOR USE WITH 12V DC VALVES TB4 TB5 RS-485 NETWORK A B COM Figure 36 CPU Board 39

47 Sample Sequencer IV Installation Figure 37 Electrical Wiring Diagram 40

48 Sample Sequencer IV Installation Figure 38 Electrical Wiring Diagram Figure 39 Electrical Wiring Diagram 41

49 Sample Sequencer IV Installation Starting Up The Sample Sequencer 1. Ensure the Sample Sequencer is securely mounted. 2. Wire the Sample Sequencer to the analyzer, sample valves, and other devices as described in the Installation section of this manual. 3. Apply power. 4. Setup the Sample Sequencer required for your application. This includes setting the sample timers, operating mode, analog input ranges, and custom sequence. Refer to the Quick Start Guide and Operation sections of this manual. 42

50 Sample Sequencer IV Maintenance MAINTENANCE Cleaning The Sample Sequencer is constructed of rugged materials that do not require cleaning. If cleaning the external surfaces is desired, a soft cloth and water is recommended. Rechargeable Battery The CPU board contains a rechargeable lithium ion battery. This battery is not intended for field replacement. Contact the factory for additional information regarding replacing this battery or proper disposal of a CPU board containing the lithium ion battery. Fuses Potential Fire Hazard Replace fuses only with the same fuse type and ratings. AVERTISSEMENT Risque potentiel d incendie Ne remplacer les fusibles qu avec des fusibles totalement identiques Every circuit board in the Sample Sequencer contains re-settable fuses to protect personnel, wiring and the electronics from excessive current draw. The procedure for resetting one of these fuses after an overload condition occurs is to remove power and allow the device to cool down. The dry contacts use a replaceable 2 A fast acting fuse rated for 250 V. These fuses are located on the relay board. The power supply uses a 4 A fast acting fuse rated for 250 V. Replacement fuses for the power supply and dry contacts are available from Sentry. Refer to the Spare Parts List of this manual for further information. Refer to the Disassembly procedure for instructions on replacing user replaceable parts such as fuses. 43

51 Sample Sequencer IV Maintenance Disassembly Electrical Shock Hazard Disconnect all power, including voltages connected to relays, before servicing or replacing fuses. AVERTISSEMENT Risque potentiel choc électrique Enlever la source d alimentation incluant les sources de voltage au relais avant tout entretien ou remplacement des fusibles. Use the following steps to replace any user serviceable parts: 1. Remove the front cover of the enclosure by removing the four corner screws. Disconnect the keypad extension cable from the CPU board. 2. Disconnect the interface cable and power supply cable from the CPU board. Remove the CPU board by removing the four mounting screws. 3. Disconnect the interface cable and power supply cable from the Track and Hold board. Remove the Track and Hold board by removing the four standoffs located on the board. 4. Replace desire part, such as fuse, circuit board or cable assembly. 5. Replace the Track and Hold board. Secure the board in place using the four standoffs removed in step 3. Replace the interface cable and power supply cable. 6. Replace the CPU board. Secure the board in place using the four screws removed in step 2. Replace the interface cable and power supply cable. 7. Replace the front cover. Attached the keypad extension cable to the CPU board. Secure the front cover in place using the four screws located on the corners of the front cover. Calibration Note: The analog circuitry of the Sample Sequencer is calibrated at Sentry prior to shipment. Re-calibration should be performed by properly trained personnel. Refer to the following procedures to calibrate the analog circuits of the Sample Sequencer: Analog Input Calibration Tools Required: Calibrated milliamp supply. 1. Using the methods discussed in the Operation section of this manual, navigate to the Input Cal Screen. 2. Remove the existing analog input wires and connect a calibrated milliamp supply to TB1 terminals marked Analog Input 1 of the CPU board. 3. Input 0/4 ma (whichever is desired) on TB1 terminals marked Analog Input 1 of the CPU board. 4. Use the and arrows to change the OFFSET value until RAW COUNT reads between 0 and 500. Note: Raw count should not read 0. When calibrating to 4mA, typical Offset values range between and Press the ENTER key. 6. Input 20 ma on TB1 terminals marked Analog Input 1 of the CPU board. 7. Use the and arrows to change the GAIN value until RAW COUNT reads between and Note: Raw count should not read When calibrating to 20mA, typical Gain values range between and Press the ENTER key. 9. Repeat steps 2-7 using channel Analog Input 2 to calibrate channel 2. 44

52 Sample Sequencer IV Maintenance Analog Output Calibration Tools Required: Calibrated multimeter with milliamp measurement capability. 1. Using the methods discussed in the Operation section of this manual, navigate to the Output Cal Screen. 2. Connect a calibrated multimeter to the + and terminals of the desired channel on the Track and Hold board. 3. Use the and arrows to select a channel to calibrate. Press the ENTER key to calibrate the selected channel. 4. Use the and arrows to change the OFFSET value until the multimeter reads 4.00 ma (or 0.00 ma) ± 0.01 ma. 5. Press the ENTER key. 6. Use the and arrows to change the GAIN value until the multimeter reads ma ± 0.01 ma. 7. Press the ENTER key to return to the Channel Selection Screen. 8. Repeat steps 2-7 to calibrate the remaining channels. 9. Press the ESC key to return to the previous screen. 45

53 Sample Sequencer IV Troubleshooting Guide TROUBLESHOOTING GUIDE Symptom Possible Problem(s) Remedy Display doesn t light Power 1. Check the power LEDs on the CPU board. Are they lit? NO proceed to step 2. YES contact Service Department. 2. Check the power connections from the Power Supply to the CPU board. Are the connections tight? NO set cables in place. YES proceed to step Check the Power Supply fuse for continuity. Bad fuse? YES replace fuse. NO contact Service Department. Incorrect analyzer value Sequencer doesn t recognize end-of-batch signal from analyzer Scale Calibration Mode Wiring Table 3 Troubleshooting Guide 1. Verify the scaled output of the analyzer matches the scaled input of the Sequencer. Does the problem persist? YES proceed to step Perform an analog input calibration. Does the problem persist? YES contact Service Department. 1. Verify the Sequencer is in the Batch mode. (Refer to Mode in the Operation section of this manual.) Correct Mode? NO change to Batch mode. YES proceed to step Verify an End-of-Batch indication is correctly wired between the analyzer and Sequencer. Does the problem persist? YES contact Service Department. 46

54 Sample Sequencer IV Factory Assistance FACTORY ASSISTANCE Sentry Equipment Corp has been in the forefront of steam and water sampling equipment technology for over 70 years. Sentry has always been recognized as the market leader in new sampling technology and in exceptional customer support. Please, do not return any equipment before discussing your application problem with a Sentry representative and obtaining a Return Authorization. Sentry Equipment Corp has a complete staff of trained Service Department associates to assist customers with any problems. Call Sentry at 262/ (Fax: 262/ ) to request a service representative. Please have the unit s serial number and software date code available when contacting the Service Department. The software date code can be viewed immediately after power is applied to the unit. 47

55 Sample Sequencer IV Spare Parts SPARE PARTS LIST Description Sentry P/N Sample Sequencer circuit board assemblies: Relay board A Track and Hold board B CPU board G Sample Sequencer cable assemblies: Line power to power supply A Power cable B Signal cable C Membrane extension cable D Sample Sequencer Enclosure: Bracket A Rear Housing C Front Housing Assembly A Front Housing Gasket D Front Housing Screws E Membrane switch assembly A Power Supply A LCD B Fuse, 2 A 250 V Fast Acting (for relay contacts) A Fuse, 4 A 250 V Fast Acting (for power supply) F Terminal Blocks Relay outputs A Track and Hold outputs B Analog inputs C Discrete inputs D Valve outputs E RS-485 network F 48

56 Sample Sequencer IV Accessories ACCESSORIES Description Sentry P/N RS-485 to RS-232 Converter B Sentry Manifold Sample Valve (12 VDC) C/D Sentry Back Pressure Regulator (20 psi)/relief Valve (BPR/RV) A Sentry Flow Indicator with control valve (FICV), 580 cc/min D Sentry Flow Indicator with control valve (FICV), 1600 cc/min B Sentry VREL (Variable Pressure Reducing Element valve) A Filter, 40 Micron, 1/4" Tube Fitting K Replacement Filter Element, 40 mesh L 49

57 Sample Sequencer IV Warranty WARRANTY Seller warrants products manufactured by it and supplied hereunder to be free from defects in materials and workmanship for a period of twelve months from date of shipment. If within such period any such products shall be proved to Seller s satisfaction to be defective, such products shall be repaired or replaced at Seller s option. Seller s obligation and Buyer s exclusive remedy hereunder shall be limited to such repair and replacement and shall be conditioned upon Seller s receiving written notice of any alleged defect within 10 days after its discovery and, at Seller s option, return of such product to Seller, ex-works Sentry s factory. The foregoing warranties are exclusive and in lieu of all other express and implied warranties except in title, including but not limited to implied warranties of merchantability and fitness for purpose. Seller shall not be subject to any other obligations or liabilities whatsoever with respect to products manufactured or furnished by it, or any undertakings, acts or omissions relating thereto. Warranty Conditions & Limitations This Warranty shall not apply to any Sentry product which, in the opinion of Sentry Equipment Corp, has been (a) altered or repaired in a manner affecting the efficiency of performance of the unit or (b) incorrectly installed or operated or (c) damaged in shipment or (d) damaged by flood or fire or (e) if the serial number is missing, altered or defaced. The owner shall be responsible for maintenance of his equipment. Wear or damage caused by lack of normal maintenance or by misuse of the equipment shall not be considered as defective workmanship and material. Sentry reserves the right to make product design changes or improvements without notice and without imposing any obligation upon itself to install these changes or improvements on its products previously manufactured. This warranty is for the sole benefit of the original purchaser and is not transferable unless agreed to in writing by Sentry Equipment Corp. Receiving Shipments (including loss or damage by transportation) It is the customer s responsibility to check for missing cartons and sign of damage to cartons. If found, customer should note missing and/or damaged cartons on the delivery receipt and have delivery receipt signed by the representative of the transportation company. If unpacking discloses concealed damage from rough handling, the customer should request a concealed damage inspection from the transportation company. The Sentry Customer Service Department will aid your organization in any claim proceeding for shortages or damages in shipment, but it is the receiver s responsibility to file claim with the carrier for damage or loss. Customer Actions For Claims on Products During the Warranty Period 50

58 Sample Sequencer IV Warranty 1. Contact the Customer Service Department, Sentry Equipment Corp., Oconomowoc, WI, Telephone: , to obtain a Return Material Authorization (RMA) number. 2. You will be sent an RMA and a Decontamination Statement that is required to be filled out and returned with the equipment. 3. The following information must appear on the outside of the package: a. RMA number marked on outside of box. b. Decontamination Statement filled out and attached to outside of box. 4. Return defective equipment FREIGHT PREPAID. Collect shipments will be refused. 5. The factory will not process warranty claims until the customer has properly accomplished the above items. 6. The Sentry factory may accept the entire claim, a part of the claim or none of the claim if our inspection of returned parts proves the failure was for reasons other than defective material or factory workmanship. Important Notes: 1. Sentry will not be responsible for damage incurred during the return shipment. 2. All returns subject to inspection and a $50.00 evaluation fee. 3. This RMA is not authorization for credit. Credits and/or replacements will be issued upon evaluation of returned goods. 4. RMA is valid for thirty (30) days from issue date. 51

59 Sample Sequencer IV Appendix A APPENDIX A - RECOMMENDED PIPING It is recommended proper sample conditioning and flow control be maintained to obtain representative samples. The Electric Power Research Institute (EPRI) guidelines for representative sampling recommend maintaining constant and continuous sample flow in sample lines. In addition, it is recommended the sample be cooled to a temperature of 77 F (25 C) prior to analysis. (Note: Some analyzers may recommend a different sample temperature be used to accelerate the analysis process.) Appropriate sample coolers or heaters may be required. Consult the pressure and temperature specifications for your specific analyzer and sampling system. Figure 40 shows the recommended sample conditioning piping and instrumentation diagram (P & ID) when switching streams with the Sample Sequencer. Figure 40 Recommended Sample Conditioning 52

60 Sample Sequencer IV Appendix B APPENDIX B USING A SEQUENCER WITH HACH SERIES 5000 ANALYZER The Sample Sequencer may operate with a Hach Series 5000 analyzer. The Series 5000 instruments operate in batch-mode style and require the appropriate configuration for use with the Sample Sequencer. Hach 5000 analyzers have special features that provide a contact closure at the end of the batch. This is called the Mark End of Measurement contact closure. The contact closure causes the Sample Sequencer to advance to the next sample point. See Batch Mode operation description in this manual for more information. Figure 41 illustrates how to connect the Sample Sequencer to a Hach Series 5000 analyzer. The Hach 5000 analyzer must be configured properly to operate with the Sample Sequencer. The analyzer must be programmed to use relay #3 and relay #4 for System Alarm and End-of- Measurement contact closure indications, respectively. Consult the Hach analyzer manual for information about configuring the System Alarm to relay 3. The following procedure describes how to configure the End-of-Measurement contact closure on the Hach Configuring the Series 5000 (Catalog No XX through XX) for MARK END OF MEASURE on Relay 4 1. Remove the front cover of the control module. Move the No. 1 DIP switch on SW1 to the ON position. This will enable the Extended Diagnostic menu. (Switch SW1 is an 8-switch DIP located near the center of the circuit board.) 2. Return to the front of the control panel and press the TEST key. Using the NEXT key, scroll through the diagnostic menu to MARK END OF MEAS. Press ENTER and select ENABLE with the NEXT key. Then, press ENTER. This will activate the MARK END OF MEASURE contact closure. 3. Turn OFF switch No. 1 on switch bank SW1 of the circuit board. This will return the analyzer to normal operation but leave the MARK END OF MEASURE function enabled. Note: This procedure will have to be repeated if a cold start is performed. 4. Reassign the System Alarm to relay 3 by the following: Press the SET UP key. ALARMS will appear. Press ENTER. Scroll with the NEXT key to RELAY CONFIG and press ENTER. Scroll to SYS ALRM with the NEXT key and then press ENTER. Scroll with the NEXT key to RLY 3 and press ENTER. 5. Reassign Alarm 2 to No Relay by the following: Press the SETUP key on the control module. ALARMS will appear. Press ENTER. Scroll with the NEXT key to RELAY CONFIG and press ENTER. Scroll to ALARM2 and press ENTER. Scroll with the NEXT key to NO RLY and press ENTER. 6. Assign relay 4 to Mark End of Measure by the following: Press the SETUP key on the control module. ALARMS will appear. Press ENTER. Scroll with the NEXT key to RELAY CONFIG and press ENTER. Scroll to MARK END OF MEAS and press ENTER. Note: MARK END OF MEAS will not appear unless it has been properly activated per the above steps. Scroll with the NEXT key to RLY 4 and press ENTER. This will assign the alarm 4 relay to mark the end of measurement with a contact closure. The contact closure makes the Sample Sequencer advance to the next sample point. 53

61 Sample Sequencer IV Appendix B 7. Verify the Sequencer is operating in the batch mode. Older Hach Series 5000 Analyzers If you have an analyzer with a catalog model number 5000X-XX, contact Hach Service Department at regarding using the Sample Sequencer with your analyzer. Updated software EEPROM may be required to operate correctly with the Sample Sequencer. If you have an analyzer with a catalog model number 5500X-XX, configure your unit as follows: Model 5500X-XX Configuration 1. The wiring is different for the model 5500X-XX than shown in Figure C1. The changes are: (a) Connect the Sample Sequencer End-of-Batch terminals to the Hach terminals labeled NO and COM on ALRM 2. (b) Connect the Sample Sequencer Analyzer Alarm terminals to the Hach terminals labeled NO and COM on SYS ALRM. 2. Open the control module door and loosen the screw to allow access to the rear of the display board. Remove the back cover. 3. Turn DIP switch #1 (S1) ON by pressing it. This puts the analyzer in the Extended Diagnostic menu. 4. Press the TEST key. 5. Using the NEXT key, scroll through the diagnostic menu to "MARK END of MEAS", then, press ENTER. This will cause the number 2 alarm contact to close at the end of each analysis cycle. The Series 5000 now provides a contact closure to advance the Sample Sequencer to the next sample point each time alarm 2 contact closes. The alarm 2 contact can no longer be used for an alarm signal. 6. After pressing ENTER, return the #1 DIP switch (S1) to the OFF position. Replace the cover and close the meter panel. This returns the analyzer to normal operation. Note: If a "cold start" is initiated or the backup battery fails during a power failure, you must reset the MARK END of MEAS as outlined above. 7. Verify the Sequencer is operating in the batch mode. 54

62 Sample Sequencer IV Appendix B Recommended Sequencer Timer Settings It is recommended the following times be programmed into the Sample Sequencer when using the Hach Series 5000 analyzers: Sample Time... 20:00 minutes Reference the Operation section of this manual for instructions on programming the Sample Timers. Figure 41 Wiring to a Hach Series 5000 Analyzer 55

63 Sample Sequencer IV Appendix C APPENDIX C LCD AVAILABLE CHARACTERS Figure 42 shows the characters that can be displayed in the Sample Sequencer. Figure 42 LCD Character Chart 56