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Model 5100-02-IT Combustible Gas Sensor Module
TABLE OF CONTENTS
1.
PRODUCT DESCRIPTION ................................................................................................................................. 3
1.1 GENERAL ........................................................................................................................................................ 3
1.2 PRODUCT CONFIGURATION ........................................................................................................................ 3
1.3 THEORY OF OPERATION .............................................................................................................................. 3
1.4 MODES OF OPERATION ................................................................................................................................ 3
1.5 MECHANICAL ................................................................................................................................................. 4
1.6 INTERCONNECT WIRING .............................................................................................................................. 5
1.7 POWER REQUIREMENTS ............................................................................................................................. 5
2.
CAUTIONS & WARNINGS ................................................................................................................................. 7
2.1 INTRODUCTION ............................................................................................................................................. 7
2.2 IT MODULES GENERAL .............................................................................................................................. 7
3.
QUICK START .................................................................................................................................................... 9
............................................................................................................................................................ 9
3.3 MODULE
3.4 TRANSMITTER
3.5 START-UP
INSTALLATION .................................................................................................................... 9
& OPERATION ............................................................................................................................. 9
4.
INSTALLATION ................................................................................................................................................ 10
4.1 SENSOR MODULE LOCATIONS ................................................................................................................. 10
.......................................................................................................................................................... 10
4.3 ENCLOSURE INSTALLATION ...................................................................................................................... 11
4.4 TRANSMITTER AND SENSOR INSTALLATION .......................................................................................... 12
4.5 MODULE ADDRESS SWITCH ...................................................................................................................... 13
5.
OPERATION ..................................................................................................................................................... 18
5.1 DATA ENTRY KEY PAD ................................................................................................................................ 18
5.2 MAIN MENU................................................................................................................................................... 19
5.3 SET-UP .......................................................................................................................................................... 20
5.4 MAINTENANCE FUNCTIONS ....................................................................................................................... 23
6.
CALIBRATION .................................................................................................................................................. 24
6.1 CALIBRATION FREQUENCY ....................................................................................................................... 24
6.2 CALIBRATION PREPARATION .................................................................................................................... 24
6.3 CALIBRATION GAS DELIVERY METHODS ................................................................................................. 24
6.4 CALIBRATION PROCEDURE ....................................................................................................................... 24
6.5 SENSOR EXPOSURE TO GAS .................................................................................................................... 24
6.6 CALIBRATION SUB-MENU ........................................................................................................................... 25
7.
SERVICE ........................................................................................................................................................... 26
7.1 MODULE SUB ASSEMBLY ........................................................................................................................... 26
7.2 ENCLOSURE REPLACEMENT .................................................................................................................... 26
7.3 TRANSMITTER REPLACEMENT ................................................................................................................. 27
7.4 SENSOR REPLACEMENT ............................................................................................................................ 27
7.5 INSTALLATION INSPECTION ...................................................................................................................... 27
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Model 5100-02-IT Combustible Gas Sensor Module
8.
APPENDICES ................................................................................................................................................... 29
8.1 APPENDIX A: SPECIFICATIONS.................................................................................................................. 29
8.2 APPENDIX B: MODEL NUMBERS, PARTS LIST & PARAMETERS............................................................. 30
8.3 APPENDIX C: LIMITED WARRANTY ............................................................................................................ 31
8.4 APPENDIX D: REMOTE SENSOR OPTION ................................................................................................. 32
8.5 APPENDIX E: HART ...................................................................................................................................... 33
8.6 APPENDIX F: MODBUS MEMORY MAP ...................................................................................................... 40
8.7 APPENDIX G: COMBUSTIBLE GAS SCALING FACTORS .......................................................................... 41
8.8 APPENDIX H: MENU KEY FOR 5100-02-IT GAS SENSOR MODULE ......................................................... 42
8.9 APPENDIX I: FM APPROVAL ....................................................................................................................... 45
8.10 APPENDIX J: SIL-2 APPROVAL CERTIFICATE ........................................................................................... 47
LIST OF FIGURES
FIGURE 1 - 1: MODEL 5100-02-IT COMBUSTIBLE SENSOR – MOUNTING OPTIONS .................................... 5
FIGURE 1 - 2: MODEL 5100-02-IT COMBUSTIBLE SENSOR – CAST AL ENCLOSURES, DIMENSIONS ....... 6
FIGURE 1 - 3: MODEL 5100-02-IT-SS COMBUSTIBLE SENSOR – 316SS ENCLOSURES, DIMENSIONS ..... 6
FIGURE 4 - 1: TYPICAL MOUNTING OPTIONS ................................................................................................. 10
FIGURE 4 - 2: TRANSMITTER FACE PLATE ..................................................................................................... 14
FIGURE 4 - 3: 4-20 MA CIRCUITS TYPES 5100-02-IT ...................................................................................... 14
FIGURE 4 - 4: 4-20 MA CIRCUITS TYPES 5100-02-IT – CONNECTIONS ........................................................ 15
FIGURE 4 - 6: REMOTE ALARM RESET ............................................................................................................ 16
FIGURE 4 - 5: DIGITAL INTERFACE CONNECTIONS ...................................................................................... 16
FIGURE 4 - 7: TERMINATION DRAWING .......................................................................................................... 17
FIGURE 5 - 1: FACE PLATE WITH DATA ENTRY KEY PAD ............................................................................. 18
FIGURE 6 - 1: MODEL 5358-01 CALIBRATION ADAPTER ............................................................................... 24
FIGURE 7 - 1: MODULE COMPONENTS ........................................................................................................... 26
FIGURE 8 - 1: REMOTE SENSOR OPTION ....................................................................................................... 32
FIGURE 8 - 2: HART ............................................................................................................................................ 33
FIGURE 8 - 3: 4-20 MA CIRCUITS TYPES 5100-02-IT – CONNECTIONS - HART .......................................... 34
LIST OF TABLES
TABLE 4 - 1: MINIMUM WIRE GAUGES ............................................................................................................. 11
TABLE 4 - 2: SENSOR MODULE EXTERNAL INTERFACES ............................................................................ 13
TABLE 4 - 3: SENSOR MODULE ADDRESS SWITCH POSITIONS .................................................................. 13
TABLE 5 - 1: MASTER MENU ............................................................................................................................. 19
TABLE 5 - 2: OPERATION DISPLAY VALUES ................................................................................................... 19
TABLE 5 - 3: SET-UP CONFIGURATION ........................................................................................................... 21
TABLE 5 - 4: MAINTENANCE MENU .................................................................................................................. 23
TABLE 6 - 1: CALIBRATION ................................................................................................................................ 25
TABLE 8 - 1: MODBUS MEMORY MAP .............................................................................................................. 40
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Model 5100-02-IT Combustible Gas Sensor Module
1. PRODUCT DESCRIPTION
1.1 GENERAL
The Model 5100-02-IT Catalytic Bead Combustible Gas Sensor Module is a member of the Sentry
Information Technology ”IT” family of gas sensor transmitter modules. IT modules offer a broad array of features including:
• Integral Alphanumeric display
• 180 day calibration frequency
• SIL-2
• FM Approved for performance and hazardous locations
• 4-20 mA output
• Modbus
®
RTU interface
• SMC Sentry interface
• 316 Stainless steel enclosure option
• Remote alarm reset
• Optional Alarm Relays
• Remote sensor option
IT modules are designed, and approved for installation and operation in hazardous locations.
1.2 PRODUCT CONFIGURATION
Various module configuration options are available. Where applicable, these options are factory configured prior to shipment.
1.3 THEORY OF OPERATION
Catalytic bead gas sensors detect gas by comparing the resistance of two heated elements. One element is catalytic to enhance the burning of combustible gases, the other element is passive. Electronic circuits are used to compare the change in the catalytic bead resistance relative to the passive bead. The relative change is calibrated to determine the concentration of the gas of interest.
1.4 MODES OF OPERATION
All IT gas sensor modules can be installed on Sierra Monitor Sentry Model 5000 controllers. Catalytic bead modules communicate as a combustible gas sensor module (Type 2 communication) and are automatically detected by the Sentry controller. When it is installed in a Sentry system the IT module must have a unique address which can be established by setting an address between 1 and 8 on the rotary switch accessible from the cover plate as illustrated in Figure 4-1. Figure 4-4 in this manual provides the wiring terminations for connections to the Sentry controller.
When the module is operated in conjunction with a Sentry controller, the alarm relay setup (See section
4.3) should be set to “Sentry”, allowing the Sentry controller to manage alarm relay action rather than the
5100-02-IT Gas Sensor Module.
An available option, applicable only to Sentry installations, is a connector card which allows daisy chain installation using the Sentry multiplex capability. Use of the connector card reduces costs by avoiding the requirement for wiring junction boxes. The connector card has two sets of connections, allowing for a continuous run to the next module
®
Registered trademark of Schneider Electric.
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Model 5100-02-IT Combustible Gas Sensor Module
An RS-485 Modbus RTU serial interface allows direct connection to standard PLCs and DCSs. The
Module Address Switch (section 4.5) allows the user to select up to 15 different Modbus addresses. Also, up to 254 different Modbus Addresses are available via menu selection. Figure 4-5 in this manual provides the wiring terminations for Modbus connections.
The analog 4-20 mA interface allows direct connection to standard controller and distributed system. The module is an active current source.
The standard configuration is set up for a 3-wire non-isolated connection. An optional 4-wire isolated connection is also available and can be enabled by changing JP1 and JP2.
1.4.4 REMOTE SENSOR (APPENDIX E)
The Remote Sensor option enables the remote mounting of the sensor up to 50’ from the transmitter.
1.4.5 HART CONNECTION (APPENDIX F)
A HART interface option is available. Refer to Appendix F for information.
1.4.6 OPTIONAL INTEGRAL RELAYS
The optional relays are integral to the gas sensor module and are rated as SPDT, 250VAC, 5 Amps for the
High Alarm and Low Alarm relays and SPDT, 250VAC, 2 Amp for the Trouble relay.
* HART option, relays are all SPDT, 250VAC, 2 Amp
If the gas sensor module is provided with the optional relays, it will include Terminal P4 on the interface board (Figure 4-3). Relay output connections are on P4.
1.4.7 REMOTE ALARM RESET
An input is available for connection of remote alarm reset/acknowledge. Figure 4-6 provides the wiring termination for connecting the remote alarm reset. This only resets local alarms, not Sentry alarms.
1.5 MECHANICAL
The sensor module of comprised of the following three primary components:
ENCLOSURE
Standard on the 5100-02-IT is an explosion-proof, rain-tight cast aluminum electrical housing (Figure 1-3) with three ¾” FNPT conduit hubs. The 5100-02-IT-SS has a 316 Stainless Steel enclosure (Figure 1-2).
Both enclosure covers have a viewing window. The design of the enclosure allows 3-way mounting choices as shown in figure 1-1.
TRANSMITTER ELECTRONICS
Electronic Assembly consisting of one printed circuit board assembly mounted under a cover plate, plugged into one field termination board. Connectors for wiring for power, signal interface and alarm relays are located on the bottom of the termination board.
SENSOR ASSEMBLY
The sensor assembly includes an explosion proof housing containing the gas sensor and a wiring harness for connection to the transmitter. The sensor assembly threads into one hub of the enclosure. The exposed end of the sensor assembly is threaded to allow connection of a rain-shield or calibration gas.
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