Original Instructions Installation, Operation & Maintenance Manual Sentry Sample Sequencer 5 Controller Sample Conditioning Automation S-SW-IOM-00270-5 1-17
Do not install, maintain, or operate this equipment without reading, understanding, and following the appropriate Sentry Equipment Corp instructions. Otherwise, injury, damage, or both may result. Copyright 2016 by Sentry Equipment Corp. All rights reserved. All product and company names are property of their respective owners. This document contains proprietary information. No part of this document may be photocopied or reproduced without the prior written consent of Sentry Equipment Corp. Limit of Liability Sentry Equipment Corp, its employees, agents, and the authors and contributors to this document specifically disclaim all liabilities and warranties, express or implied (including warranties of merchantability and fitness for a particular purpose), for the accuracy, currency, completeness, and/or reliability of the information contained herein and/or for the fitness for any particular use and/or for the performance of any material and/or equipment selected in whole or part with the user of/or in reliance upon information contained herein. Selection of materials and/or equipment is at the sole risk of the user of this publication. Note The information contained in this document is subject to change without notice. 2 Sentry Equipment Corp
Table of Contents Safety Information...5 General Safety Precautions...6 Specifications....6 Quick Start....7 General Description...8 Modes of Operation...9 Inputs and Outputs....12 Installation.................................................................. 15 Unpacking...15 Mounting...15 Electrical Connections....19 Operation....28 Description of Controls...28 Operation Screen....30 Widgets Screen....31 Sequencer Control screen....47 Operating Modes....48 Valve Outputs....50 Maintenance....51 Cleaning...51 Battery....51 Disassembly....51 Calibration...52 Troubleshooting Guide...53 List of Components...54 Accessories...55 Sentry Sample Sequencer 5 Controller 3
Standard Warranty...55 Customer Support...56 Appendix A: Recommended Piping...57 Appendix B: Using a Sequencer with Hach Series 5000 Analyzer...58 Configuring the Series 5000 (Catalog No. 60000-XX through 60004-XX) for MARK END OF MEASURE on Relay 4....59 Older Hach Series 5000 Analyzers....59 Model 5500X-XX Configuration...60 Appendix C: Typical Analyzer Connections....62 Orion 2117LL, 2117HL, 2118XP, 2111LL, and 2111XP....62 Thornton 2800Si Silica Analyzer....63 Appendix D: Modbus Registers...64 Appendix E: Connection to PLC that requires a contact closure for point identification...69 4 Sentry Equipment Corp
Safety Information 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 and/or equipment damage. Use of Hazard Information If multiple hazards exist, the signal word corresponding to the greatest hazard shall be used. Definitions DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury. CAUTION, used with the safety alert symbol, indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. NOTICE is used to address practices not related to personal injury. Â NOTE Information that requires special emphasis. Â TIP Alternate techniques or clarifying information. SHALL: This word is understood to be mandatory. SHOULD: This word is understood to be advisory. General Safety Precautions Product Selection, Installation, and Use Improper selection, installation, or use can cause personal injury or property damage. It is solely the responsibility of users, through their own analysis and testing, to select products suitable for their specific application requirements, ensure they are properly maintained, and limit their use to their intended purpose. Follow proper local, state, and federal regulations for proper installation and operational requirements. Always use caution and common sense when working with any chemical. Read the product label and Material Safety Data Sheets (MSDS) carefully and follow the instructions exactly. Sentry Sample Sequencer 5 Controller 5
Specifications Specifications are subject to change without notice. Applications: The Sentry Sample Sequencer 5 is designed to support sample stream switching in Batch or Continuous modes. Maximum Number of Samples: 8 Maximum Number of Analyzers: 4 Power: Input Voltage: 100 240 VAC Frequency Range: 50/60 Hz Input Current: 1.2 A / 115 V 0.72 A / 230 V Inputs from Analyzer: Four analog inputs: 4 20 ma (150 Ω load) Four digital inputs for end-of-analysis indication. Sourcing Input Four digital inputs for calibration indication. Sourcing Input Four digital inputs for analyzer system alarm indication. Sourcing Input Outputs: 10Base-T Ethernet supports Modbus TCP/IP communication and embedded web capability. Valve outputs (12 VDC) to control a maximum of eight solenoid valves for sample stream switching. Individual outputs capable of handling up to 2 A solenoid load. Total solenoid load current not to exceed 4.5 A at 12 VDC. (Consult factory if individual solenoid load is greater than 1 A at 12 VDC). 12 digital outputs for point number indication and replicated Analyzer Alarms. 0 24 V, 40 ma sinking outputs Current Outputs: Eight 4 20 ma outputs. Maximum Load: 500 Ω Nominal Accuracy: Analog Inputs: ± 0.2% full scale Analog Outputs: ± 0.2% full scale Resolution: Analog Inputs: 10 µa/lsb Analog Outputs: 10 µa/lsb Data Logging: Records stored on removable SD card. Storage limitations based on size of SD card. User Interface: 4.3" color touch screen, 65,000 colors Enclosure: 304 Stainless steel, 16 GA. Designed to meet NEMA 4X (indoor), IPX0 Dimensions: 8.00" H x 9.00" W x 7.25" D (203 mm H x 229 mm W x 184 mm D) Mounting: Panel or surface Ambient Temperature: -5 45 C (23 113 F); Relative Humidity 5 95% 6 Sentry Equipment Corp
Environmental: Indoor use only Operating Altitude: 0 2000 m (0 6562 ft) (Consult factory for other altitudes.) Mains supply fluctuation: -10% and +10% Transient overvoltage: 1500 VAC Pollution degree: 2 Agency Approvals: Shipping Weight: 15 lb (6.80 kg) Quick Start Technicians who are familiar with the Sentry Sample Sequencer 5 may use the Quick Start Guide below to step through the startup procedure. Refer to the Operation section (referenced in parentheses) for full details. Users who prefer more detailed instructions should begin with the Operation section. Make sure that the Sample Sequencer 5 is properly wired (see Installation on page 15) and all analyzers are OFF before applying power to the system. 1. Apply power to the Sample Sequencer 5 unit. 2. Set up sample names: Select the Sample Names widget ( ) and enter a name for each sample line. (See Sample Names on page 32.) 3. Select the number of active sequences: Select the Sequences Active widget ( ) and choose the number of sequences (analyzers) to be used. Press the save button to automatically advance to the Sequences screen for the next step. (See Sequences Active on page 33.) 4. Set the sequences: On the Sequences ( ) screen, use the buttons to create the desired sequences (up to 16 sequence points) for up to four analyzers. Seq x (1 4) indicates the analyzer. (See Sequences on page 33.) 5. Set up analyzer names: Select the Analyzer Names widget ( ) and enter a name for each analyzer. (See Analyzer Names on page 34.) 6. Set the mode: Select the Mode widget ( ) and choose either Batch or Continuous mode for each analyzer. (See Mode on page 35.) 7. Set the units: Select the Units widget ( ) and set the unit of measure displayed for each sequence. (See Units on page 35.) 8. Scale analog inputs: Select the IO widget ( ). From the I/O screen, choose Analog Input Scale. Set the scale for each analyzer. (See IO on page 36.) Sentry Sample Sequencer 5 Controller 7
9. Calibrate analog inputs: From the I/O screen, choose Analog Inputs Cal. Following the prompts on the screen, supply 4 ma and then 20 ma from a calibrated source to the desired input for calibration purposes. (See IO on page 36.) 10. Calibrate analog outputs: From the I/O screen, select Analog Outputs Cal. Connect a calibrated multimeter to the desired output, and use the up/down arrows on the screen to calibrate the output for both 20 ma and 4 ma. (See IO on page 36.) 11. Test digital outputs: From the I/O screen, select Digital Outputs Test. To test an output, toggle the indicator ON, then verify that the device connected to the output is active. (See IO on page 36.) ÂÂ NOTE Turn off all outputs before exiting the Digital Outputs Test screen. 12. Test solenoid valve outputs: From the I/O screen, select Solenoid Valves Test. To test an output, toggle the indicator ON, then verify that sample is flowing to the analyzer. (See IO on page 36.) ÂÂ NOTE Turn off all outputs before exiting the Solenoid Valve Outputs Test screen. 13. Bypass sample lines out of service: If any lines are out of service, select the Bypass widget ( ) and press the indicator of the sample to toggle between Sample (lighted) and Bypass (dimmed). (See Bypass on page 42.) 14. Set flush times: Select the Flush Times widget ( ) and set flush times for analyzers that operate in Continuous mode. (See Flush Times on page 43.) 15. Set sample times: Select the Sample Times widget ( ) and set the sample times for each sample. (See Sample Times on page 43.) 16. Start sequencer control: Return to the Sequencer Control screen by touching the escape button in the lower left corner of the Widgets screen. Toggle the indicators to turn on each analyzer. (See Sequencer Control screen on page 47.) General Description The Sentry Sample Sequencer 5 reduces the number of required analyzers while maintaining equivalent data accuracy. Electronically switches up to eight sample streams, one at a time, to a shared analyzer and provides signals to recorders. If eight sample streams are not needed for one process, the remaining points may be assigned to additional analyzers, up to four in total. Track and hold outputs provide independent outputs for each sample point to remote data acquisition devices (DCS, recorder, etc.). Digital outputs provide channel number indication and replicate analyzer alarms for remote data. Measures the analyzer analog output signal and converts the analog signal to digital data to send out using Modbus TCP/IP or Embedded web. Uses Modbus capability to connect a PC or system network to one or more sequencers for remote monitoring, control, and data acquisition. 8 Sentry Equipment Corp
Modes of Operation The Sample Sequencer 5 has two programmable modes of operation: Continuous mode is used for analyzers that continuously produce an analytical result. Batch mode is used for analyzers that take a sample bite (or batch), produce an analytical result, and then provide a contact signal output, typically in 1-20 minutes. Figure 1, Figure 2, and Figure 3 illustrate typical system arrangements for sample stream switching with the Sample Sequencer 5. Customer-supplied equipment is shown for clarification. Figure 1. Sample Sequencer 5 with Continuous Analyzer Sentry Sample Sequencer 5 Controller 9
Figure 2. Sample Sequencer 5 with Batch Analyzer 10 Sentry Equipment Corp
Figure 3. Sample Sequencer 5 with Two Analyzers   NOTE See Appendix C on page 62 for interface protocols and wiring for a number of typical analyzers. If using the Sample Sequencer 5 with a Hach analyzer, see Appendix B on page 58. Sentry Sample Sequencer 5 Controller 11
Inputs and Outputs A variety of inputs and outputs are available on the Sample Sequencer 5. Analog Inputs Four analog inputs are located on the sequencer board for reading 4 20 ma signals from up to four different analyzers. The sequencer converts 4 20 ma signals into engineering units for display, and outputs the same signals for the track and hold analog outputs. Analyzer Alarm Inputs Alarm inputs are typically used to indicate a loss of sample flow to the analyzer. Four analyzer alarm inputs are located on the sequencer board. Alarm input causes the analyzer description to flash on the Operation screen and causes the digital alarm output for that sequencer to be set. In Continuous mode: 1. An alarm immediately closes the active sample valve and opens the next sample valve. 2. The next sample valve remains open until one of the following occurs: a. the alarm clears b. one minute elapses c. the timer expires 3. After the sample valve closes, the sequencer opens the next sample valve. 4. The sequencer continues trying to establish flow until the analyzer alarm clears. In Batch mode: 1. An alarm starts a timeout timer. (The operator can adjust the timeout timer for each sample individually by setting the sample timer.) 2. If the sequencer does not receive an end-of-batch indication from the analyzer, or if the alarm does not clear before the timer expires, the sequencer closes the current sample valve and opens the next valve in the sequence. 3. If the end-of-batch indication is received before the timer expires, the sequencer assumes the alarm is not a loss of flow and continues with normal operation. 12 Sentry Equipment Corp
Calibration Hold Inputs A calibration hold input indicates that the analyzer is performing a calibration. Four calibration hold inputs are located on the sequencer board. In Continuous mode, when a calibration hold input is received: The sequencer waits at the active sample with the valve open. Once the calibration hold clears, the sequencer resumes operation, entering the Flush state for the sample that was active before the calibration hold was received. In Batch mode, calibration hold inputs do not perform a function. End-of-Batch Inputs End-of-batch inputs are used to indicate when a batch type analyzer is finished taking a measurement. Four end-of-batch inputs are located on the sequencer board. Without this input connected, the Sample Sequencer 5 does not advance to the next sample when the sequencer is in Batch mode. End-of-batch inputs are not used in Continuous mode. Valve Outputs Valve outputs supply 12 VDC to operate the sample valves. Eight valve outputs are located on the sequencer board. The eight valves may be divided between four analyzers in any combination. Track and Hold Outputs Eight analog outputs (4 20 ma) are provided on the sequencer board. When a valid reading is taken from the analyzer for a given sample, the Sample Sequencer 5 tracks (updates) the corresponding signal on the appropriate output. When the sample is not currently being analyzed, the sequencer holds the corresponding signal on the appropriate output at its last known value. Digital Outputs A total of twelve digital outputs are available on the sequencer board: Four outputs are used to replicate the four analyzer alarm inputs Eight outputs are used for sample point indication. A lighted indicator next to an output indicates that the point is currently being sampled and the analyzer reading corresponds to that sample point. Sentry Sample Sequencer 5 Controller 13
Ethernet Communications The Sample Sequencer 5 is capable of connecting to a network for communicating to a PC or control system via Modbus TCP/IP. The sequencer also provides the option to view settings via embedded web. For more information on these features, refer to Appendix D on page 64. Optional Manifold Switching Valve The Sample Sequencer 5 may be used to control most manifold valve arrangements; however, the Sentry Manifold Switching Valve is a convenient optional accessory for obtaining representative samples. The patented Sentry Manifold Switching Valve incorporates block and bleed design provides continuously flowing samples eliminates areas where cross contamination can occur available in either four or eight sample line models Contact Sentry Equipment for more information about this optional sampling valve. 14 Sentry Equipment Corp
Installation This instrument should be installed by qualified technical personnel to ensure adherence to all applicable electrical codes. 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. Unpacking 1. Carefully remove the Sample Sequencer 5 from its shipping carton. 2. Inspect it for any damage. 3. Report damages to the shipper at once. Mounting Mount the Sample Sequencer 5 close to the analyzer to permit viewing of both devices at the same time. The sample sequencer mounts easily to either a panel or a wall. Mounting method must be capable of supporting at least 24 lb (10.9 kg). Figure 4. Enclosure Dimensions: Bottom View Sentry Sample Sequencer 5 Controller 15
Figure 5. Enclosure Dimensions: Side View Wall Mounting 1. Turn off all power to the Sample Sequencer 5 and disconnect all cables. 2. Use the dimension information shown in Figure 6 to mark positions on the wall for four screw holes. A minimum of two (2) mounting screws must mount to a stud. 3. Drill pilot holes in the marked positions for four ¼" (M6) screws. 4. Use four ¼" (M6) hex-head or pan-head screws to secure the device to the wall. 5. Make electrical connections as described in the Electrical Connections section beginning on page 19. Figure 6. Mouting Dimensions 16 Sentry Equipment Corp
Figure 7. Wall Mounting the Sample Sequencer 5 Panel Mounting 1. Turn off all power to the Sample Sequencer 5, disconnect all cables, and remove cable connectors. 2. Measure and cut the panel hole using the dimension information given in Figure 8. 3. Place supplied panel mounting gasket on the rear facing lip of the sequencer. 4. Fit the sequencer into the panel hole and secure it with the four (4) bolts and nuts that were supplied with the unit. 5. Replace cable connectors. 6. Make electrical connections as described in the Electrical Connections section beginning on page 19. Sentry Sample Sequencer 5 Controller 17
Figure 8. Panel Mount Dimensions Figure 9. Panel Mounting 18 Sentry Equipment Corp
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. 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. Figure 10 (board view) and Figure 11 (schematic view) show the power connections on the board. Power Connection The Sample Sequencer 5 uses a universal power supply that accepts an input voltage range of 100-240 VAC and frequency of 50 or 60 Hz. A power supply lead of 16 AWG (1.3 mm2) copper wire is recommended. Connect the sample sequencer to an electrical outlet or outlet strip with surge suppression and filtering. A suitable external over-current protection device such as a fuse (Class CC, 2A, Time delay) or circuit breaker (C trip curve, 2 A) is recommended for both the hot (L) and neutral (N) leads. Using this method, the plug serves as the disconnect device. A 16 AWG, 60 C, VW-1, 600V, type SJT cord is recommended for non-detachable connections. For permanent connections, use a flexible S0W cable or better. Sizing must be in accordance to the CEC. The mains and output terminal are rated within the following condition: Mains terminals rated up to 300V, 10A, 12-28 AWG, PA insulating material, Inflammability class V0, Type: Plug, 2 or 3 position, and screw connection. Output terminals rated up to 300V, 8A, 14-30AWG, PA insulating material, Inflammability class V0, Type: Plug, 6 or 8 position, and screw connection. For permanently connected installations: A switch or circuit breaker shall be included in the building installation. It shall be in close proximity to the equipment and within easy reach of the operator. It shall be marked as the disconnecting device for the equipment. The cord and plug shall comply with the following standards: Table 1. Power Cord Requirements 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 60227 or 60245 Appropriate IEC standard Sentry Sample Sequencer 5 Controller 19
If desired, the Sample Sequencer 5 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 (Class CC, 2A, Time delay) or circuit breaker (C trip curve, 2 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( ) 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. During connection of the power wire, the grounding lead must be suitably routed and long enough so that it is the last conductor to take the strain. Installation should be performed by qualified personal in accordance with local codes and procedures. Grounding and EMC Considerations Power To properly ground the Sample Sequencer 5: 1. Connect a ring terminal ground lug to the ground wire. 2. Secure the ground lug to the enclosure ground stud, which is marked with a ground symbol and is located next to the customer power connection. 3. For an insulated ground conductor, use a green or green with yellow stripe conductor which is the same size as the mains conductor. I/O Cables To maintain SGS and CE ratings for EMC: All I/O cables must be shielded and grounded. The shield (drain) wire for the analyzer inputs must be tied to an isolated ground located near the opposite cable end (analyzer) from the sequencer, and not connected to the sequencer. All cables connected to the sequencer must use the clamp-on ferrites. (Supplied) The supplied ferrites must be installed on all I/O cables. 20 Sentry Equipment Corp
Sequencer Board Connections Make sure all leads are lugged prior to wiring to the terminal blocks. This avoids the potential for miswiring and placing transients on the analyzer(s) and sequencer. Be sure to ground the shield in the analyzer as detailed in Grounding and EMC Considerations on page 20. Connections from the Analyzer(s) Referencing Figure 11, analyzer connections include: 4 20mA output signal analyzer alarm (typically a loss of flow or system failure alarm) end-of-batch signal for batch analyzers calibration signal for continuous analyzers Use a 22 AWG multiple twisted pair shielded cable similar to Belden 9512 for each analyzer connected. This allows the signals to be connected from each analyzer to the removable terminal block plug on the sequencer with one cable (see Figure 10). Analog Outputs from the Sequencer (Track and Hold) Analog outputs (Track and Hold, 4 20 ma) are created in the sequencer for each sample being sequenced through the analyzer(s). Outputs provide individual sample line data acquisition for local or remote indication. Connections may be used with a recorder or in situations where analog I/O at the receiving device is limited. There are two track and hold terminal blocks in the sequencer (see Figure 10). Use a 22 AWG 4 pair twisted pair shielded cable similar to Belden 9514 for wiring to each removable terminal block. Maximum load is 500 ohms. (See Specifications on page 6 for additional details.) Digital Outputs from the Sequencer The Sample Sequencer 5 has 16 sinking digital outputs to provide point indication for sample being analyzed: eight (8) on one terminal block four (4) replicated analyzer alarms four (4) spares on a separate terminal block Use a 22 AWG multi-conductor shielded cable similar to Belden 9423 for wiring to each removable terminal block. Valve Output Connections The valve outputs of the Sample Sequencer 5 output 12 VDC, and are 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. Use an 18 AWG multi-conductor shielded cable similar to Belden 9409 for wiring to each solenoid valve used. Typical valve connections are shown in Figure 11. Sentry Sample Sequencer 5 Controller 21
Summary of Wiring Recommendations Power cable Connections from the analyzers Valve output connections Analog outputs from the Sample Sequencer 5 Digital outputs from the Sample Sequencer 5 Volex 17276 or equivalent Belden 9512 or equivalent Belden 9409 or equivalent Belden 9514 or equivalent Belden 9423 or equivalent Figure 10. Sequencer board connections 22 Sentry Equipment Corp
Figure 11. Electrical Wiring Diagram   NOTE Install ferrites per I/O Cables on page 20. Sentry Sample Sequencer 5 Controller 23
TCP/IP Modbus and Embedded Web Connections TCP/IP Modbus and Embedded Web connections are made using the Ethernet port. For more information on using the TCP/IP Modbus and Embedded Web features, refer to Appendix D on page 64. Alternate Sequencer Board Connections Aside from a power source, the Sample Sequencer 5 can alternatively be connected to the above IO using the quick connect ports and corresponding cables to a customer supplied terminal block. These ports (labeled S5L and S5R) are located on the bottom of the sequencer behind the sealed fitting connections (see Figure 12). Figure 12. Alternate Electrical Connections 24 Sentry Equipment Corp
Figure 13. Alternate Electrical Wiring Diagram Sentry Sample Sequencer 5 Controller 25
Figure 14. Alternate Connection Pin-Out Chart 26 Sentry Equipment Corp
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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. Description of Controls Table 2 describes controls on the Sample Sequencer 5 touch screen display. Table 2. Control Descriptions Description Widgets button Enter button Escape button Save button Function The widgets button takes you to the Widgets screen, where touching a widget icon takes you to the corresponding function screen. Touching the enter button takes the value you have entered and updates the function screen with that value. Touching the escape button returns you to the previous screen; any value changes are discarded. Touching the save button saves entered values and returns you to the function screen. 28 Sentry Equipment Corp
Figure 15. Screen Navigation Operation Password Control Widget Flush Times Sample Times Bypass Mode Sequences Active Password Date/Time Communications IO Data Logging Sequences Sample Names Analog In - View Analog In - Cal Analyzer Names Units Preferences Info Analog Out -Test Analog Out -Cal Digital In -View Digital Out -Test Sol. Valves -Test Analog In - Scale Touch screen - Cal Sentry Sample Sequencer 5 Controller 29
Operation Screen The Operation screen is the main screen on the Sample Sequencer 5. This screen contains all the information indicating the state of the sequencer. No system changes can be made on this screen. Figure 16. Operation screen Status Open Sample Valve Name Sequence Sample Line Names Additional Sequences Analyzer Description Most Recent Active Value Make sure that the Sample Sequencer 5 is properly wired (see Installation on page 15) and all analyzers are OFF before applying power to the system. 1. Apply power to the Sample Sequencer 5 unit. The Operation screen appears. 2. Touch anywhere on the Operation screen, excluding the left and right arrow areas, to get to the Control screen (see Figure 43). If prompted, enter password. 3. Continue start-up with Widgets Screen on page 31. 30 Sentry Equipment Corp
Additional Features Additional Sequences: Depending on the settings, there are one or two sequences displayed per Operation screen. Touch the left or right arrows on the screen to view additional sequences. Sequence sample line names: Displayed to the left of the analyzer with the appropriate sample name indicated in the sample line tubing. Status: In Continuous mode, this displays the state of the sample sequencer, time remaining, and measurement value. The three available states are FLUSH, SAMPLE, and OFF. The time displayed is the time remaining in the current state. The measurement value is only displayed when the sequencer is in the SAMPLE state. In Batch mode, this indicates the state of the sequencer, OFF or SAMPLE. Open Sample Valve Name: Displays the sample description for the currently open valve. Analyzer Description: User definable field that describes the analyzer being sequenced. The maximum number of characters is four. When an analyzer alarm or calibration signal is received, this description flashes. Most Recent Active Value: In Continuous mode, the current measurement value is displayed. In Batch mode, this displays the description of the previously sampled point and its measurement value. The measurement value on the analyzer corresponds to this sample point. If password protection is enabled, the Password Entry screen appears when the user attempts to enter the Control screen. Enter the password to gain access to change the settings on the Sample Sequencer 5. If you do not know the password, please contact Sentry Equipment. Widgets Screen The Widgets screen provides access to the various settings and functions of the sample sequencer. Select an individual widget to access its corresponding function screen. Select the escape button in the lower left corner to return to the Control screen. Select the arrow button in the lower right corner to access additional widgets. Certain widgets, such as Flush Times and Sample Times, require that the sequence be turned off before accessing data. If you are unable to access a widget, it is likely due to this requirement. Figure 17. Widgets Sentry Sample Sequencer 5 Controller 31
1. From the Control screen, touch the widgets button in the lower right corner of the screen to access the Widgets screen. 2. Continue start-up with Sample Names on page 32. Sample Names The factory default for each sample point description is in the form of SAMPLE X NAME. Use the Sample Names widget to rename each sample point. Figure 18. Sample Names screen You can set up the names of the sample points at any time, but doing it at the start can make the set-up process easier. 1. Touch the Sample Names widget to access the Sample Names screen. 2. Touch the sample name you wish to change. An alphanumeric keypad appears. 3. Enter a name for the sample point. 4. Touch the enter button to update the Sample Names screen with the name you just entered. 5. Repeat step 2 through step 4 for any additional name changes. 6. Save changes by touching the save button in the lower right hand corner. To exit without saving changes, touch the escape button in the lower left hand corner. 7. Continue start-up with Sequences Active on page 33. 32 Sentry Equipment Corp
Sequences Active The Sample Sequencer 5 is capable of sequencing up to four different analyzers. Select the number of analyzers to be sequenced. Figure 19. Sequences Active screen 1. Touch the Sequences Active widget. 2. Select the number of sequences (analyzers) used and then touch the save button. 3. The screen advances to the Sequences screen (see Figure 20). 4. Continue start-up with Sequences on page 33. Sequences The order in which the sample sequencer opens sample points can be customized. The Sequences screen displays the active sequences. Figure 20. Sequences screen Seq x (1 4) indicates the analyzer to which the samples are being sent. 1. If you are not automatically directed to the Sequences screen after saving changes on the Sequences Active screen, touch the Sequences widget. 2. Select the sequence you wish to change by touching Seq x. Sentry Sample Sequencer 5 Controller 33
3. Use the buttons on the screen to create the desired sequence. Any unused sample line can be sequenced. Each sequence is limited to a total of 16 sequence points; not all 16 points need to be filled. At the end of the sequence, the sequence wraps to the first point. 4. Touch the save button to save the sequences, or touch the escape button to return to the previous screen without saving. 5. Continue start-up with Analyzer Names on page 34. Analyzer Names The factory default for each analyzer description is in the form of Analyzer X NAME. Use the Analyzer Names widget to rename each analyzer. Figure 21. Analyzer Names screen You can set up the names of the analyzers at any time, but doing it at the start can make the set-up process easier. 1. Touch the Analyzer Names widget to access the Analyzer Names screen. 2. Touch the analyzer name you would like to change. An alphanumeric keypad appears. 3. Enter a name for the analyzer. 4. Touch the enter button in the lower right corner of the keypad to update the Analyzer Names screen with the name you just entered. 5. Repeat step 2 through step 4 for any additional name changes. 6. Save changes by touching the save button. To exit without saving changes, touch the escape button. 7. Continue start-up with Mode on page 35. 34 Sentry Equipment Corp
Mode The Sample Sequencer 5 is capable of operating in two different modes, depending on the type of analyzer being used. Continuous mode is for continuous output analyzers such as sodium, conductivity, ph, O 2, some colorimetric, and many other analyzers. 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. These typically include silica, phosphate, and other analyzers. Figure 22. Mode screen 1. Touch the Mode widget to access the Mode screen. 2. Toggle a sequence between Batch and Continuous modes by touching the indicator next to the sequence you wish to change. 3. Touch the save button to save the changes made on this screen. To return to the previous screen without saving, touch the escape button. 4. Continue start-up with Units on page 35. Units The units of measure for the active sequences are displayed on Units screen. Units x corresponds to the units for Seq x. Figure 23. Units screen Sentry Sample Sequencer 5 Controller 35
Set the unit of measure displayed for each sequence. 1. Navigate to the second page of the Widgets screen and select the Units widget. 2. On the Units screen, touch the unit of measure you wish to change. 3. Use the keypad that appears to enter the desired unit of measure. 4. Touch the enter button to update the Units screen. 5. Repeat steps 2 4 for each unit you wish to change. 6. Save changes by touching the save button. Return to the previous screen without saving by touching the escape button. 7. Continue start-up with IO on page 36. IO Use the IO widget to view and update input and output settings for the sequencer. Figure 24. I/O screen 1. Touch the IO widget to access the I/O screen, then select the I/O function you would like to perform by touching the black button to the right of the description. 2. Analog Input Scale: Set the scale for the analog inputs in order for the input value to be displayed in engineering units. The scale should be set to the same range as the analyzer. a. From the I/O screen, select Analog Input Scale. Figure 25. Analog Input Scale screen 36 Sentry Equipment Corp
b. Touch the setting you wish to change and enter the value for the setting on the numeric keypad that appears. c. Touch the enter button to update the value on the Analog Input Scale screen. d. Repeat steps b c for each value you wish to change. e. Save changes. 3. Analog Inputs Cal: Calibrate the 4 20 ma values for the analog inputs. a. From the I/O screen, select Analog Inputs Cal. Figure 26. Analog Inputs - Cal screen b. Supply 4 ma from a calibrated source to the desired input, then touch the Press to Cal area of the screen below the input. c. The status area indicates that the input is calibrating. When it is finished calibrating, the input reads Enter 20.00 ma. d. Supply 20 ma from a calibrated source to the input, then touch the Press to Cal area of the screen below the input. e. The status area indicates that the input is calibrating. When it is finished calibrating, the status area is blank and calibration is complete. f. Repeat steps b e for any additional analog inputs that require calibration. g. When all analog inputs are calibrated, touch the save button to save the calibration values. Sentry Sample Sequencer 5 Controller 37
4. Analog Outputs Cal: Calibrate the 4 20 ma values for the analog outputs. a. From the I/O screen, select Analog Outputs Cal. Figure 27. Analog Outputs - Cal screen b. Connect a calibrated multimeter to the + and terminals of the desired channel on the terminal block labeled Track and Hold. c. Verify that the output reads 20.0 ma. If the multimeter doesn t read 20.0 ma, press the up and down arrows on the screen until the multimeter reads 20.0 ma. d. Touch the 20.0 ma area on the screen to update the output to 4.00 ma. e. Verify that the output reads 4.00 ma. If the multimeter doesn t read 4.00 ma, press the up and down arrows on the screen until the multimeter reads 4.00 ma. f. After you have set the 4 ma output, touch the 4.00 ma area on the screen. The output area is now blank. g. Repeat steps b f for all outputs that require calibration. h. When all analog outputs are calibrated, touch the save button to save the calibration values. 5. Digital Outputs Test a. From the I/O screen, select Digital Outputs Test. Figure 28. Digital Outputs - Test screen b. Touch the indicator below the desired output to toggle the output on. The indicator illuminates when the digital output is on. 38 Sentry Equipment Corp
c. Verify that the device connected to the output is active. d. Touch the indicator again to toggle the output off. e. Repeat steps b d for each digital output. ÂÂ NOTE Turn off all outputs before exiting the Digital Outputs Test screen. f. Touch the escape button in the lower left hand corner to exit the Digital Outputs Test screen. 6. Solenoid Valves Test a. From the I/O screen, select Solenoid Valves Test to access the Solenoid Valve Outputs Test screen. Figure 29. Solenoid Valve Outputs - Test screen b. Touch the desired output to toggle the output on. When the indicator is illuminated, the solenoid valve output is on. c. Verify that sample is flowing to the analyzer. If sample is not flowing, make sure that the solenoid valve is properly connected and operating. d. Touch the output again to toggle the output off. ÂÂ NOTE Turn off all outputs before exiting the Solenoid Valve Outputs Test screen. e. Touch the escape button in the lower left hand corner to exit the Solenoid Valve Outputs Test screen. 7. Continue start-up with Bypass on page 42. Sentry Sample Sequencer 5 Controller 39
Additional Features Analog Inputs View: This screen displays the 4 20 ma values for the analog inputs. No changes can be made from this screen. Figure 30. Analog Inputs - View screen Analog Outputs Test: Use this screen when you wish to test the 4 20 ma values for the analog outputs. Figure 31. Analog Outputs - Test screen To use the Analog Outputs - Test screen: 1. Choose the output you wish to test. 2. Connect a calibrated multimeter to the desired output. By default, the output should read 4.00 ma. To output a value other than 4.00 ma, use the up and down arrows next to the output you are testing. This steps the output between 4.00 and 20.0 ma. The five (5) available output levels are 0%, 25%, 50%, 75%, and 100% of full scale. 3. Verify reading with your multimeter. 4. When finished, touch the escape button to return to the previous screen. 40 Sentry Equipment Corp
Digital Inputs View: Use this screen when you wish to view the digital inputs. When an indicator is illuminated, the digital input is on. No changes can be made from this screen. Figure 32. Digital Inputs - View screen Touchscreen Cal: Use this screen when you wish to recalibrate the touch screen. This screen also displays each time the unit is powered up. Figure 33. Touchscreen - Cal screen Follow the prompts on the screen to perform the touch screen calibration. For better results, it is recommended to use a stylus for this calibration. This calibration is timed; failure to follow the prompts in a timely manner returns you to the main screen without saving the calibration values. The screen indicates that calibration is complete if the prompts were followed successfully. Sentry Sample Sequencer 5 Controller 41
Bypass Sample streams may be temporarily skipped in the sequence by placing the sample point number in Bypass mode. Figure 34. Bypass screen If a sample line is temporarily out of service, skip it without changing the sequence by placing the sample line in Bypass mode. 1. Touch the Bypass widget to access the Bypass Line screen. 2. Toggle between Sample (lighted indicator) and Bypass (dimmed indicator) by touching the indicator next to the sample line you wish to change. ÂÂ NOTE When a point that is placed in Bypass is next to be sequenced, the point is skipped and the next point that is in Sample is sequenced. Occasionally, it is necessary to hold an analysis on one sample point. To do this, simply place all the undesired sample points in Bypass mode. 3. Press the save button to save the changes made on this screen. To return to the previous screen without saving, press the escape button. 4. Continue start-up with Flush Times on page 43. 42 Sentry Equipment Corp
Flush Times In Continuous mode, flush time is the amount of time sample flows through the analyzer before the analyzer reading is considered valid. Flush time is not used in Batch mode. See Operating Modes on page 48 for more information about Batch and Continuous modes. Figure 35. Flush Times screen 1. Select the Flush Times widget to access the Flush Times screen. 2. Touch the time on the sample line you would like to update. The Enter Time screen appears. 3. Use the buttons to change the time displayed. Time values are limited to 59 minutes and 59 seconds. 4. Touch the enter button to update the value in the Flush Times screen. 5. Repeat steps 2 through 4 for each flush time you wish to change. 6. Touch the save button to save all times on the screen, or touch the escape button to leave the screen without saving the updated values. 7. Continue start-up with Sample Times on page 43. Sample Times Sample time is the amount of time the analyzer reading is considered valid as sample flows through the analyzer. See Operating Modes on page 48 for timing considerations for Batch and Continuous modes. Figure 36. Sample Times screen ] Sentry Sample Sequencer 5 Controller 43
1. Touch the Sample Times widget to access the Sample Times screen. 2. Touch the time on the sample line you would like to update. The Enter Time screen appears. 3. Use the buttons to change the time displayed. Time values are limited to 59 minutes and 59 seconds. 4. Touch the enter button to update the value in the Sample Times screen. 5. Repeat steps 2 through 4 for each sample time you wish to change. 6. Touch the save button to save all times on the screen, or touch the escape button to leave the screen without saving updated values. 7. Continue start-up with Sequencer Control screen on page 47. ÂÂ NOTE 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 Batch mode, 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 sample time expires, the Sample Sequencer 5 closes the current sample point and proceeds to the next sample point. Since the analyzer alarm input may serve to indicate more than a loss of sample flow, sample time should be set to give the analyzer sufficient time to attempt to complete an analysis and output an end-of-batch indication. Password Setup If desired, the Sample Sequencer 5 can be password protected. Figure 37. Password Setup screen Optional 1. Touch the Password widget to access the Password Setup screen. 2. Touch the blue button to toggle between Enabled and Disabled. When Enabled is selected, the current password is displayed. 3. To change the password, touch the password and a keypad appears. 4. Use the keypad to enter a new password, then touch the enter button to return to the Password Setup screen. 5. Touch the save button to save the new password. To return to the previous screen without saving, press the escape button. 44 Sentry Equipment Corp
Communications The Sample Sequencer 5 has the capability to communicate via Modbus TCP/IP or embedded web using the 10base-T Ethernet port. Figure 38. Communications screen Optional 1. Touch the Communications widget to acces the Communication screen. 2. Enter the correct IP, Subnet, and Gateway values. 3. If using Modbus, set desired address. 4. Save changes. Clock The sequencer contains a real time clock that provides the time and date stamp for the data logger. Figure 39. Set Date screen Optional 1. Touch the Clock widget to access the Set Date screen. 2. Touch each segment of the Set Time to line that you wish to change and enter the correct date and time. 3. Save changes by touching the save button. To exit without saving changes, touch the escape button. Sentry Sample Sequencer 5 Controller 45
Data Logging To view logged data, use the Data Logging screen. Figure 40. Data logging screen This screen displays data that has been logged to the SD card. Use the arrows to scroll through the data. The data includes the sample name, a time stamp, and the value. The Date Stamp and Time Stamp are taken the moment the data is logged. To exit, use the escape key. No changes can be made from this screen. Preferences To set the preferences for the Sample Sequencer 5, use the Preferences screen. Figure 41. Preferences screen Sequences per screen: Select whether you would like to see one or two sequences on the Operation screen. Inputs per Analyzer: Select the number of inputs that will be coming from the analyzer(s). If you use one analyzer, you may choose to have up to four inputs from that analyzer. If you use more than one analyzer, you may only have one input from each analyzer. When finished, touch the save button to save all preferences, or touch the escape button to return to the previous screen without saving. 46 Sentry Equipment Corp
Information To view information about the sequencer, use the Information screen. Figure 42. Information screen This screen shows revision and contact information for the Sample Sequencer 5. When finished, touch the escape button to return to the previous screen. Sequencer Control screen The Sequencer Control screen is used for changing the state of the sequences. This screen contains the name and state of each active sequence. Figure 43. Sequencer Control screen 1. Navigate to the Sequencer Control screen. From the Operation screen, touch anywhere, excluding the left and right arrow areas. From the Widgets screen, touch the escape button. 2. Touch the indicator next to a sequence to turn the sequence on or off. When a sequence is on, the indicator is illuminated. When a sequence is off, the indicator is dimmed and the word Off appears next to the indicator. 3. Touch the escape button to return to the Operations screen. Sentry Sample Sequencer 5 Controller 47
Additional Features Depending on your settings, there are one to four sequences displayed on the Sequencer Control screen. Touch the indicator next to each sequence to turn the sequence on or off. Touch the widgets button to view the Widgets screen. Operating Modes Continuous Mode Continuous mode is for continuous output analyzers such as sodium, conductivity, ph, O 2, some colorimetric, and many others. Timing considerations for Continuous mode Figure 44 illustrates the timing diagram for Continuous mode. The following considerations should be made when determining the timing for your system. Analyzer Alarm: An analyzer alarm immediately closes the active sample valve and opens the next sample valve. That sample valve remains open until the analyzer alarm clears or one minute elapses. After one minute, the sample sequencer opens the next sample valve. The sequencer continues trying to establish flow every minute until the analyzer alarm clears. Calibration Hold: A calibration hold signal causes the sample sequencer to wait at the active sample with the valve open. Once the calibration indication clears, the sequencer resumes 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, the analyzer needs a settling time 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. 48 Sentry Equipment Corp
Figure 44. Continuous Mode Timing Diagram Batch Mode 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. Timing Considerations for Batch Mode Figure 45 illustrates the timing diagram for Batch mode, showing how each sample stream is switched when the analyzer outputs an end-of-batch signal to the Sample Sequencer 5. If the sequencer does not receive an end-of-batch signal, it does not advance to the next sample. Upon receiving an end-of-batch signal from the analyzer, the sequencer reads the analyzer value, updates the Track and Hold output, and closes the point identification relay. Â Â NOTE The updated Track and Hold output and point identification relay are for the previous sample point. The open valve number never matches the closed relay point identification in Batch mode. Sentry Sample Sequencer 5 Controller 49
The following considerations should be made when determining the timing for your Batch mode system: End-of-Batch: The sequencer receives this signal when the analysis is completed and the analyzer is ready to begin a new analysis. Analyzer Alarm: The 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 sequencer starts the sample timer and replicates the analyzer alarm for use by external recorders and control systems. Sample Time: The sample time in 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 expires, the sequencer closes the current sample point and proceeds 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. Figure 45. Batch Mode Timing Diagram Valve Outputs The Sample Sequencer 5 switches sample streams to an analyzer using the valve outputs on the board. These outputs provide 12 VDC to control solenoid valves. Sentry Equipment offers a manifold switching valve for use with the Sample Sequencer 5. With additional hardware, other solenoid valve operating voltages may be used. 50 Sentry Equipment Corp
Maintenance Cleaning The Sample Sequencer 5 is constructed of rugged materials that do not require cleaning. If cleaning the external surfaces is desired, a soft cloth and water is recommended. Battery The sequencer board contains a 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. The power supply uses a 4 A fast-acting fuse rated for 250 V. Replacement fuses for the power supply are available from Sentry Equipment. Refer to the Spare Parts List of this manual for further information. Refer to the Disassembly procedure below for instructions on replacing user replaceable parts such as fuses. Disassembly Electrical Shock Hazard Disconnect all power, including voltages connected to relays, before servicing or replacing fuses. Use the following steps to replace any user serviceable parts: 1. Open the door of the enclosure using a screwdriver to unlock the door. 2. Disconnect all terminal blocks on the circuit board. Remove the circuit board by removing the mounting screws. 3. Disconnect the power supply cable from the power supply board. 4. Replace desired part, such as fuse, circuit board, or cable assembly. 5. Replace the circuit board. Secure the board in place using the screws removed in step 2. Reconnect all terminal blocks. 6. Close and lock door. Sentry Sample Sequencer 5 Controller 51
Calibration ÂÂ NOTE The analog circuitry of the Sample Sequencer 5 is calibrated at Sentry Equipment 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 5: Analog Input Calibration Tools Required: Calibrated milliamp supply. 1. To calibrate analog inputs, use the Analog Inputs Cal screen. 2. Remove the existing analog input wires and connect a calibrated milliamp supply to terminals AI and GND on the desired analyzer terminal block. 3. Supply 4.00 ma from a calibrated source to the desired input. 4. Touch the Press to Cal area of the screen. The status area indicates that the input is calibrating. 5. When finished, the input reads Enter 20.00 ma. Supply 20 ma from a calibrated source to the input. 6. Touch the Press to Cal area to begin. The status area indicates that the input is calibrating. 7. Once the input has finished calibrating, the status area is blank and calibration is complete. 8. Repeat process for any additional analog inputs you wish to calibrate. When finished, touch the save button to save all calibration values, or the escape button to return to the previous screen without saving. Analog Output Calibration Tools Required: Calibrated multimeter with milliamp measurement capability. 1. To calibrate analog outputs, use the Analog Outputs Cal screen. 2. Connect a calibrated multimeter to the + and terminals of the desired channel on the terminal block labeled Track and Hold. 3. As displayed on the screen, the output should be reading 20 ma. If the multimeter isn t reading 20.0 ma, use the up and down arrows on the screen until the multimeter is reading 20.0 ma. 4. After you have set the 20 ma output, touch the 20.0 ma area on the screen. This updates the output to 4 ma. 5. If the multimeter isn t reading 4.0 ma, use the up and down arrows on the screen until the multimeter is reading 4.0 ma. 6. After you have set the 4 ma output, touch the 4.0 ma area on the screen. 7. Repeat the above steps for any other outputs you would like to calibrate. When finished, touch the save button to save all calibration values, or the escape button to return to the previous screen without saving. 52 Sentry Equipment Corp
Troubleshooting Guide Symptom Possible Problem(s) Remedy Display doesn t light Power 1. Check the power LED on the circuit board. Is it lit? NO: Proceed to step 2. YES: Contact Service Department. 2. Check the power connections from the Power Supply to the circuit board. Are the connections tight? NO: Set cables in place. YES: Proceed to step 3. 3. Check the Power Supply fuse for continuity. Bad fuse? Incorrect analyzer value Sequencer doesn t recognize end-ofbatch signal from analyzer Display stays on calibration screen for more than 5 seconds Display is slow or nonresponsive Scale Calibration Mode Wiring Gasket is making contact with touch area on display. Gasket is making contact with touch area on display. YES: Replace fuse. NO: Contact Service Department. 1. Verify the scaled output of the analyzer matches the scaled input of the sequencer. Does the problem persist? YES: Proceed to step 2. 2. Perform an analog input calibration. Does the problem persist? YES: Proceed to step 3. 3. There could be noise on the ground. Remove shield (drain) wires from sequencer as referenced in section I/O Cables on page 20. Does the problem persist? YES: Contact Service Department. 1. Verify the sequencer is in Batch mode. (See Mode on page 35.) Correct Mode? NO: Change to Batch mode. YES: Proceed to step 2. 2. Verify an end-of-batch indication is correctly wired between the analyzer and sequencer. Does the problem persist? YES: Contact Service Department. 1. Loosen display mounting bars, correct display position, finger tighten bars. Does the problem persist? YES: Contact Service Department. 1. Loosen display mounting bars, correct display position, finger tighten bars. Does the problem persist? YES: Contact Service Department. Sentry Sample Sequencer 5 Controller 53
List of Components Description Sample Sequencer boards: Circuit board with LCD and micro SD card Circuit board with micro SD card 4.3" LCD Touch Screen Potted LCD touchscreen * Programmed micro SD card Sample Sequencer cable assemblies: Line power to power supply 12 VDC Power cable Display cable Sample Sequencer Enclosure: Complete Enclosure Assembly Front Door Assembly Complete Enclosure Assembly for Potted LCD * Front Door Assemby for Potted LCD * Front Door Assembly Including Potted LCD * Sentry P/N 6-04973D 6-04973J 6-04973E 6-04973M 2-06933N 2-06933C 2-06933D 4-06140A 6-04973A 6-04973B 6-04973K 6-04973L 6-04973N Power Supply 4-05590F Fuse, 4 A 250 V Fast Acting (for power supply) 4-02055F Terminal Blocks: 12 VDC, 2 Position 12 VDC, 4 Position Incoming power, 3 Position Incoming power, 2 Position Analyzer inputs Track/Hold, Point indication, Valves PLC Interface Relay PLC Interface Relay Power Bridge Mounting: Panel Mount gasket Bolts for mounting 4-06084G 4-06084Y 4-06084H 4-06084Z 4-06084J 4-06084K 4-06084N 4-06084W 2-06933F 4-06084F * Systems built after 8/1/2014 have a potted display. To retrofit an older sequencer, order the front door assembly with potted LCD. 54 Sentry Equipment Corp
Accessories Description Sentry P/N Remote IO Cable, 5 meters 4-06084B Remote IO Cable, Custom Length 4-06084D Sentry Manifold Switching Valve (12 VDC) 7-04171A/B Sentry Back Pressure Regulator (20 psi)/relief Valve (BPR/RV) 7-00868A Sentry Flow Indicator with control valve (FICV), 580 cc/min 6-02671D Sentry Flow Indicator with control valve (FICV), 1600 cc/min 6-02671B Sentry VREL (Variable Pressure Reducing Element valve) 7-00744A Filter, 40 Micron, 1/4" Tube Fitting 4-00484K Replacement Filter Element, 40 mesh 4-00361L PLC Interface Relay (one required per point) 4-06084N PLC Interface Relay Power Bridge (can connect up to 8 relays) 4-06084W Standard Warranty Sentry Equipment Corp ( Seller ) warrants products manufactured by it and supplied hereunder ( Products ) to be free from defects in workmanship and, to the extent materials are selected by Seller, to be free from defects in materials, in each case for a period as defined in the table below: Brand Product Line Warranty Period Sentry Steam & Water Sampling Products and Systems Solid & Powder Sampling Products and Systems Gas Sampling Products and Systems Liquid & Slurry Sampling Products and Systems Pipeline Integrity Products Eighteen months from date of shipment or twelve months from startup (whichever occurs first) Waters Equipment Steam & Water Sampling Products and Systems Twelve months from date of shipment To view the full warranty, go to www.sentry-equip.com/warranty. Sentry Sample Sequencer 5 Controller 55
Customer Support With proven sampling expertise since 1924, Sentry products and services provide business operations the critical insights to optimize process control and product quality. We deliver true representative sampling and analysis techniques to customers around the globe, empowering them to accurately monitor and measure processes for improved production efficiency, output, and safety. Standing behind our commitments, we are determined to tackle any application, anywhere. We know that running an efficient operation isn t easy. It requires thorough, careful analysis of controlled, realtime data achieved through reliable, accurate, and repeatable process monitoring, and measuring. By effectively conditioning, sampling, and measuring gas, liquid, slurry, powder, solids, steam, or water within their production environments, our customers obtain the critical insights they need to control and optimize their processes. Yet, controlling your processes also means reliable customer support throughout the life cycle of your equipment. Customer Service General information, warranty claims, order management. Installation Service For systems that require specialized expertise upon installation. Technical Support Troubleshooting, training, and technical manuals. Field Service & Retrofits When a problem needs immediate attention. Replacements Parts & Consumables Order your replacement parts and consumables. Sentry ProShield Services select from four ProShield Guardian service plans providing different levels of support to protect your large system investments with regularly scheduled maintenance. To learn more, go to www.sentry-equip.com/support. 56 Sentry Equipment Corp
Appendix A: Recommended Piping Maintain proper sample conditioning and flow control in order 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 that the sample be cooled to a temperature of 77 F (25 C) prior to analysis. ÂÂ 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 A-1 shows the recommended sample conditioning piping and instrumentation diagram (P&ID) when switching streams with the Sample Sequencer 5. Figure A-1. Recommended Sample Conditioning SAMPLE SOURCE 1 SAMPLE SOURCE 2 SAMPLE SOURCE 3 SAMPLE SOURCE 4 LEGEND *ISOLATION VALVE *PRIMARY COOLER *PRV *ISOLATION VALVE *PRIMARY COOLER *PRV *ISOLATION VALVE *PRIMARY COOLER *PRV *ISOLATION VALVE *PRIMARY COOLER *PRV FICV = FLOW INDICATOR W/CONROL VALVE FI = FLOW INDICATOR BPRV/RV = BACK PRESSURE REGULATOR/RELIEF VALVE PRV = PRESSURE REDUCING VALVE, i.e., SENTRY VREL OR NEEDLE VALVE TOTAL FLOW F I TOTAL FLOW F I TOTAL FLOW F I TOTAL FLOW F I 50 MESH *STRAINER *SECONDARY COOLER 50 MESH *STRAINER *SECONDARY COOLER 50 MESH *STRAINER *SECONDARY COOLER 50 MESH *STRAINER *SECONDARY COOLER * = OPTIONAL ITEMS DEPENDING UPON APPLICATION SEE ACCESSORIES TO ORDER FICV, STRAINER, BPR/RV & COOLERS SENTRY BPR/RV 20 PSIG SENTRY BPR/RV 20 PSIG SENTRY BPR/RV 20 PSIG SENTRY BPR/RV 20 PSIG DRAIN OR RECOVERY HEADER FICV ANALYZER FLOW DRAIN OR RECOVERY HEADER FICV ANALYZER FLOW DRAIN OR RECOVERY HEADER SENTRY MANIFOLD SWITCHING VALVE FICV ANALYZER FLOW DRAIN OR RECOVERY HEADER FICV ANALYZER FLOW SAMPLE SEQUENCER DRAIN ANALYZER 1/8" O.D. TUBE RECOMMENDED, MINIMIZE THIS SAMPLE LINE LENGTH TO OBTAIN OPTIMUM TIME RESPONSE OF ANALYSIS. Sentry Sample Sequencer 5 Controller 57
Appendix B: Using a Sequencer with Hach Series 5000 Analyzer The Sample Sequencer 5 may operate with a Hach Series 5000 analyzer. The Series 5000 instruments operate in Batchmode style and require the appropriate configuration for use with the Sample Sequencer 5. 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 on page 49 for more information. Figure B-1 illustrates how to connect the Sample Sequencer 5 to a Hach Series 5000 analyzer. The Hach 5000 analyzer must be configured properly to operate with the 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 5000. Figure B-1. Wiring to a Hach Series 5000 Analyzer 58 Sentry Equipment Corp
Configuring the Series 5000 (Catalog No. 60000-XX through 60004-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 enables 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 activates the MARK END OF MEASURE contact closure. 3. Turn OFF switch No. 1 on switch bank SW1 of the circuit board. This returns the analyzer to normal operation but leaves the MARK END OF MEASURE function enabled. ÂÂ NOTE This procedure has to be repeated if a cold start is performed. 4. Reassign the System Alarm to relay 3: Press the SET UP key. ALARMS appears. 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: Press the SETUP key on the control module. ALARMS appears. 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: Press the SETUP key on the control module. ALARMS appears. Press ENTER. Scroll with the NEXT key to RELAY CONFIG and press ENTER. Scroll to MARK END OF MEAS and press ENTER. ÂÂ NOTE MARK END OF MEAS does not appear unless it has been properly activated per the above steps. Scroll with the NEXT key to RLY 4 and press ENTER. This assigns the alarm 4 relay to mark the end of measurement with a contact closure. The contact closure makes the Sample Sequencer 5 advance to the next sample point. 7. Verify the Sample Sequencer 5 is operating in Batch mode. Older Hach Series 5000 Analyzers If you have an analyzer with a catalog model number 5000X-XX, contact Hach Service Department at 1-800-227-4224 regarding the use of the Sample Sequencer 5 with your analyzer. Updated software EEPROM may be required to operate correctly with the Sample Sequencer 5. If you have an analyzer with a catalog model number 5500X-XX, configure your unit as follows: Recommended Sequencer Timer Settings It is recommended the following times be programmed into the Sample Sequencer 5 when using the Hach Series 5000 analyzers: Sample Time... 20:00 minutes Reference the Operation section beginning on page 28 for instructions on programming the sample timers. Sentry Sample Sequencer 5 Controller 59
Model 5500X-XX Configuration ÂÂ NOTE Software Version 1.03 or later is required to enable the Marked End of Measure Feature. 1. Verify the analyzer software version. a. From the Main Menu go to SETUP SYSTEM > INSTRUMENT INFORMATION> ANALYZER INFO. The third line should be S/W VERS:1.03. The sixth and seventh lines will indicate the current script versions. b. IF THE SOFTWARE VERSION IS EARLIER THAN 1.03 CONTACT SENTRY EQUIPMENT or REQUEST A SOFTWARE UPGRADE FROM HACH! 2. Enter the SYSTEM SETUP / SETUP OUTPUTS / RELAY SETUP Screen: a. Setup Relay B: Source = Analyzer Function = Process Event Activation / Events / MARK END OF MEASURE b. Setup Relay A: Source = Analyzer Function = Warning Failsafe = Yes Warning Levels = determined by specific needs 3. The wiring is different for the model 5500X-XX than shown in Figure B-2. The changes are: a. Connect the Sample Sequencer 5 End-of-Batch terminals to the Hach terminals labeled NO and COM on OUTPUT 2. b. Connect the Sample Sequencer 5 Analyzer Alarm terminals to the Hach terminals labeled NO and COM on OUTPUT 1. Recommended Sequencer Timer Settings It is recommended the following times be programmed into the Sample Sequencer 5 when using the Hach Series 5500 analyzers: Sample Time... 20:00 minutes Reference the Operation section beginning on page 28 for instructions on programming the sample timers. 60 Sentry Equipment Corp
Figure B-2. Sentry Sample Sequencer 5 Controller 61
Appendix C: Typical Analyzer Connections Orion 2117LL, 2117HL, 2118XP, 2111LL, and 2111XP ÂÂ NOTE Linear output function must be enabled. The factory default is Logrithmic. 2117HL shown in above example. 62 Sentry Equipment Corp
Thornton 2800Si Silica Analyzer Sentry Sample Sequencer 5 Controller 63
Appendix D: Modbus Registers Multiple sequencers can communicate with a PC or control system via Modbus TCP/IP using the Ethernet port. Each device on the network must be assigned a unique IP address. The complete listing of Modbus registers are listed in Table D-1. See Information screen to determine the revision of your sequencer. MODBUS poll interval should be set for greater than 1 second. Port 502 Table D-1. Modbus Registers: Revision 13.12.11 or higher Register Description Data Type Description Options 30001 SEQ1 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30002 Minutes Remaining INT 16 R 30003 Seconds Remaining INT 16 R 30004 Open Valve INT 16 R 30005 Analyzer value FLOAT 32 R 30007 SEQ2 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30008 Minutes Remaining INT 16 R 30009 Seconds Remaining INT 16 R 30010 Open Valve INT 16 R 30011 Analyzer value FLOAT 32 R 30013 SEQ3 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30014 Minutes Remaining INT 16 R 30015 Seconds Remaining INT 16 R 30016 Open Valve INT 16 R 30017 Analyzer value FLOAT 32 R 30019 SEQ4 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30020 Minutes Remaining INT 16 R 30021 Seconds Remaining INT 16 R 30022 Open Valve INT 16 R 30023 Analyzer value FLOAT 32 R 30025 / 40025 Flush Min Valve 1 INT 16 R/W 30026 / 40026 Flush Min Valve 2 INT 16 R/W 30027 / 40027 Flush Min Valve 3 INT 16 R/W 30028 / 40028 Flush Min Valve 4 INT 16 R/W 64 Sentry Equipment Corp
Register Description Data Type Description Options 30029 / 40029 Flush Min Valve 5 INT 16 R/W 30030 / 40030 Flush Min Valve 6 INT 16 R/W 30031 / 40031 Flush Min Valve 7 INT 16 R/W 30032 / 40032 Flush Min Valve 8 INT 16 R/W 30033 / 40033 Flush Sec Valve 1 INT 16 R/W 30034 / 40034 Flush Sec Valve 2 INT 16 R/W 30035 / 40035 Flush Sec Valve 3 INT 16 R/W 30036 / 40036 Flush Sec Valve 4 INT 16 R/W 30037 / 40037 Flush Sec Valve 5 INT 16 R/W 30038 / 40038 Flush Sec Valve 6 INT 16 R/W 30039 / 40039 Flush Sec Valve 7 INT 16 R/W 30040 / 40040 Flush Sec Valve 8 INT 16 R/W 30041 / 40041 Sample Min Valve 1 INT 16 R/W 30042 / 40042 Sample Min Valve 2 INT 16 R/W 30043 / 40043 Sample Min Valve 3 INT 16 R/W 30044 / 40044 Sample Min Valve 4 INT 16 R/W 30045 / 40045 Sample Min Valve 5 INT 16 R/W 30046 / 40046 Sample Min Valve 6 INT 16 R/W 30047 / 40047 Sample Min Valve 7 INT 16 R/W 30048 / 40048 Sample Min Valve 8 INT 16 R/W 30049 / 40049 Sample Sec Valve 1 INT 16 R/W 30050 / 40050 Sample Sec Valve 2 INT 16 R/W 30051 / 40051 Sample Sec Valve 3 INT 16 R/W 30052 / 40052 Sample Sec Valve 4 INT 16 R/W 30053 / 40053 Sample Sec Valve 5 INT 16 R/W 30054 / 40054 Sample Sec Valve 6 INT 16 R/W 30055 / 40055 Sample Sec Valve 7 INT 16 R/W 30056 / 40056 Sample Sec Valve 8 INT 16 R/W 30057 / 40057 Sample/Bypass Valve 1 INT 16 R/W 0 = Sample. 1 = Bypass 30058 / 40058 Sample/Bypass Valve 2 INT 16 R/W 0 = Sample. 1 = Bypass 30059 / 40059 Sample/Bypass Valve 3 INT 16 R/W 0 = Sample. 1 = Bypass 30060 / 40060 Sample/Bypass Valve 4 INT 16 R/W 0 = Sample. 1 = Bypass 30061 / 40061 Sample/Bypass Valve 5 INT 16 R/W 0 = Sample. 1 = Bypass 30062 / 40062 Sample/Bypass Valve 6 INT 16 R/W 0 = Sample. 1 = Bypass 30063 / 40063 Sample/Bypass Valve 7 INT 16 R/W 0 = Sample. 1 = Bypass 30064 / 40064 Sample/Bypass Valve 8 INT 16 R/W 0 = Sample. 1 = Bypass 40065 Start SEQ 1INT 16 W 40066 Stop SEQ1 INT 16 W 40067 Start SEQ2 INT 16 W 40068 Stop SEQ2 INT 16 W 40069 Start SEQ3 INT 16 W Sentry Sample Sequencer 5 Controller 65
Register Description Data Type Description Options 40070 Stop SEQ3 INT 16 W 40071 Start SEQ4 INT 16 W 40072 Stop SEQ4 INT 16 W 30073 Analyzer 1 T&H 1 Float 32 R 30075 Analyzer 1 T&H 2 Float 32 R 30077 Analyzer 1 T&H 3 Float 32 R 30079 Analyzer 1 T&H 4 Float 32 R 30081 Analyzer 1 T&H 5 Float 32 R 30083 Analyzer 1 T&H 6 Float 32 R 30085 Analyzer 1 T&H 7 Float 32 R 30087 Analyzer 1 T&H 8 Float 32 R 30089 Analyzer 2 T&H 1 Float 32 R 30091 Analyzer 2 T&H 2 Float 32 R 30093 Analyzer 2 T&H 3 Float 32 R 30095 Analyzer 2 T&H 4 Float 32 R 30097 Analyzer 2 T&H 5 Float 32 R 30099 Analyzer 2 T&H 6 Float 32 R 30101 Analyzer 2 T&H 7 Float 32 R 30103 Analyzer 2 T&H 8 Float 32 R 30105 Analyzer 3 T&H 1 Float 32 R 30107 Analyzer 3 T&H 2 Float 32 R 30109 Analyzer 3 T&H 3 Float 32 R 30111 Analyzer 3 T&H 4 Float 32 R 30113 Analyzer 3 T&H 5 Float 32 R 30115 Analyzer 3 T&H 6 Float 32 R 30117 Analyzer 3 T&H 7 Float 32 R 30119 Analyzer 3 T&H 8 Float 32 R 30121 Analyzer 4 T&H 1 Float 32 R 30123 Analyzer 4 T&H 2 Float 32 R 30125 Analyzer 4 T&H 3 Float 32 R 30127 Analyzer 4 T&H 4 Float 32 R 30129 Analyzer 4 T&H 5 Float 32 R 30131 Analyzer 4 T&H 6 Float 32 R 30133 Analyzer 4 T&H 7 Float 32 R 30135 Analyzer 4 T&H 8 Float 32 R 66 Sentry Equipment Corp
Table D-2. Modbus Registers: Revision 13.5.20 or earlier Register Description Data Type Description Options 30001 SEQ1 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30002 Minutes Remaining INT 16 R 30003 Seconds Remaining INT 16 R 30004 Open Valve INT 16 R 30005 Analyzer Value Before Decimal INT 16 R ######. 30006 Analyzer Value After Decimal INT 16 R.###### 30007 SEQ2 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30008 Minutes Remaining INT 16 R 30009 Seconds Remaining INT 16 R 30010 Open Valve INT 16 R 30011 Analyzer Value Before Decimal INT 16 R ######. 30012 Analyzer Value After Decimal INT 16 R.###### 30013 SEQ3 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30014 Minutes Remaining INT 16 R 30015 Seconds Remaining INT 16 R 30016 Open Valve INT 16 R 30017 Analyzer Value Before Decimal INT 16 R ######. 30018 Analyzer Value After Decimal INT 16 R.###### 30019 SEQ4 Status INT 16 R 0 = OFF, 1 = FLUSH, 2 = SAMPLE, 3 = ALARM, 4 = CALIBRATION, 5 = BATCH 30020 Minutes Remaining INT 16 R 30021 Seconds Remaining INT 16 R 30022 Open Valve INT 16 R 30023 Analyzer Value Before Decimal INT 16 R ######. 30024 Analyzer Value After Decimal INT 16 R.###### 30025 / 40025 Flush Min Valve 1 INT 16 R/W 30026 / 40026 Flush Min Valve 2 INT 16 R/W 30027 / 40027 Flush Min Valve 3 INT 16 R/W 30028 / 40028 Flush Min Valve 4 INT 16 R/W 30029 / 40029 Flush Min Valve 5 INT 16 R/W 30030 / 40030 Flush Min Valve 6 INT 16 R/W 30031 / 40031 Flush Min Valve 7 INT 16 R/W 30032 / 40032 Flush Min Valve 8 INT 16 R/W 30033 / 40033 Flush Sec Valve 1 INT 16 R/W Sentry Sample Sequencer 5 Controller 67
Register Description Data Type Description Options 30034 / 40034 Flush Sec Valve 2 INT 16 R/W 30035 / 40035 Flush Sec Valve 3 INT 16 R/W 30036 / 40036 Flush Sec Valve 4 INT 16 R/W 30037 / 40037 Flush Sec Valve 5 INT 16 R/W 30038 / 40038 Flush Sec Valve 6 INT 16 R/W 30039 / 40039 Flush Sec Valve 7 INT 16 R/W 30040 / 40040 Flush Sec Valve 8 INT 16 R/W 30041 / 40041 Sample Min Valve 1 INT 16 R/W 30042 / 40042 Sample Min Valve 2 INT 16 R/W 30043 / 40043 Sample Min Valve 3 INT 16 R/W 30044 / 40044 Sample Min Valve 4 INT 16 R/W 30045 / 40045 Sample Min Valve 5 INT 16 R/W 30046 / 40046 Sample Min Valve 6 INT 16 R/W 30047 / 40047 Sample Min Valve 7 INT 16 R/W 30048 / 40048 Sample Min Valve 8 INT 16 R/W 30049 / 40049 Sample Sec Valve 1 INT 16 R/W 30050 / 40050 Sample Sec Valve 2 INT 16 R/W 30051 / 40051 Sample Sec Valve 3 INT 16 R/W 30052 / 40052 Sample Sec Valve 4 INT 16 R/W 30053 / 40053 Sample Sec Valve 5 INT 16 R/W 30054 / 40054 Sample Sec Valve 6 INT 16 R/W 30055 / 40055 Sample Sec Valve 7 INT 16 R/W 30056 / 40056 Sample Sec Valve 8 INT 16 R/W 30057 / 40057 Sample/Bypass Valve 1 INT 16 R/W 0= Sample, 1 = Bypass 30058 / 40058 Sample/Bypass Valve 2 INT 16 R/W 0= Sample, 1 = Bypass 30059 / 40059 Sample/Bypass Valve 3 INT 16 R/W 0= Sample, 1 = Bypass 30060 / 40060 Sample/Bypass Valve 4 INT 16 R/W 0= Sample, 1 = Bypass 30061 / 40061 Sample/Bypass Valve 5 INT 16 R/W 0= Sample, 1 = Bypass 30062 / 40062 Sample/Bypass Valve 6 INT 16 R/W 0= Sample, 1 = Bypass 30063 / 40063 Sample/Bypass Valve 7 INT 16 R/W 0= Sample, 1 = Bypass 30064 / 40064 Sample/Bypass Valve 8 INT 16 R/W 0= Sample, 1 = Bypass 40065 Start SEQ1 INT 16 W 40066 Stop SEQ1 INT 16 W 40067 Start SEQ2 INT 16 W 40068 Stop SEQ2 INT 16 W 40069 Start SEQ3 INT 16 W 40070 Stop SEQ3 INT 16 W 40071 Start SEQ4 INT 16 W 40072 Stop SEQ4 INT 16 W 68 Sentry Equipment Corp
Appendix E: Connection to PLC that requires a contact closure for point identification Sentry Sample Sequencer 5 Controller 69