Table of Contents
Related Manuals for Allen-Bradley 1718 Ex I/O
Summary of Contents for Allen-Bradley 1718 Ex I/O
- Page 1 User Manual Original Instructions 1718 Ex I/O Catalog Numbers 1718-AENTR, 1718-IJ, 1718-OB2, 1718-OB2L, 1718-IBN8, 1718-IBN8B, 1718-IT4B, 1718-IR4B, 1718-IF4HB, 1718-CF4H, 1718-PSDC, 1718-A20, 1718-A10, 1718-CBL65, 1718-CBL3, 1718-ARM...
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Page 2: Important User Information
Important User Information Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards. -
Page 3: Table Of Contents
1718 Ex I/O Components ........ - Page 4 Table of Contents Appendix C Additional HART Protocol Message Structure ..........36 Master-slave Operation .
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Page 5: Who Should Use This Manual
These resources contain information about related products from Rockwell Automation. Resource Description 1718 Ex I/O Installation Instructions, Describes how to install and wire the 1718 Ex I/O input publication 1718-IN001 and output modules 1718 Ex I/O Technical Data, Provides specifications, wiring diagrams, and module... - Page 6 Preface Notes: Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
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Page 7: Introduction
Chapter Product Specifications Topic Page Introduction 1718 Ex I/O Components Field Units Backplanes I/O Modules Adapter Bus Termination Modules Power Supply Module Placeholder Module Accessories Introduction Remote I/O systems, consisting of I/O modules, gateways, bus termination modules, power supplies, and a backplane, form the interface for signals to be transmitted from the explosion hazardous area (Ex area), to the safe area (non- hazardous area). -
Page 8: 1718 Ex I/O Components
Ex I/O Empty Slot Cover 1718 Ex I/O Components 1718 Ex I/O Components Overview See the following graphic and table for the descriptions of different 1718 Ex I/O components: Figure 1 - 1718 Ex I/O Components Overview Rockwell Automation Publication 1718-UM001A-EN-E - December 2019... -
Page 9: Field Units
Product Specifications Chapter 1 Table 2 - 1718 Ex I/O Components Overview Description Description Field Unit (Surrounding Enclosure) Backplane Power supply Cable gland for field lines Bus termination module Cable gland for power supply and bus cables Adapter Ex-e-terminals and IP30 cover... -
Page 10: Stainless Steel Enclosure
Chapter 1 Product Specifications Stainless steel enclosure The stainless steel enclosure ensures a high level of corrosion resistance for onshore and offshore plants. Figure 3 - Field unit with stainless steel enclosure without modules Enclosure Material Availability Modular plastic and stainless steel enclosures are available in various sizes and designs, and custom solutions are also available. -
Page 11: Design And Dimensions
Product Specifications Chapter 1 termination modules are installed in their reserved slots. These are mechanically coded to avoid confusion. WARNING: Risk of death as a result of using a damaged or tampered backplane. Using a defective or tampered backplane means that explosion protection can no longer be guaranteed. - Page 12 Chapter 1 Product Specifications Figure 6 - 1718-A20 Dimensions 11 12 13 14 15 16 17 18 19 20 Table 3 - 1718-A20 Dimension Descriptions Number Description Power supply Bus termination module when used as a base backplane Empty slot when used as an extension backplane Adapter when used as a base backplane Empty slot when used as an extension backplane Slots for 20 narrow or 10 wide I/O modules...
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Page 13: I/O Modules
Product Specifications Chapter 1 Figure 7 - 1718-A10 Dimensions Table 4 - 1718-A10 Dimension Descriptions Number Description Power supply Bus termination module when used as a base backplane. Empty slot when used as an extension backplane Gateway when used as a base backplane Empty slot when used as an extension backplane Slots for 10 narrow or 5 wide I/O modules Redundant power supply... -
Page 14: Design And Dimensions Of The Modules
Each of the four channels can be configured independently of the others. Figure 8 - 1718 Ex I/O Module Design and Dimensions of the Modules The FB remote I/O system is designed in such a way that each I/O module can be connected to the I/O slot it requires on the backplane. -
Page 15: Adapter
Product Specifications Chapter 1 that prevents an I/O module from being accidentally inserted into a slot that is intended for an adapter or a power supply. WARNING: Explosion hazard as a result of removing coding pins! Removing the coding pins means explosion protection can no longer be guaranteed. -
Page 16: Bus Termination Modules
Chapter 1 Product Specifications The two Ethernet interfaces on the front connect the device to the Ethernet network. WARNING: Explosion hazard in Zone 1. When pulling out an M12 connector in Zone 1, a spark may form that ignites an explosive mixture. - Page 17 Product Specifications Chapter 1 Use black terminal blocks for non-intrinsically safe circuits that comply with Ex e type of protection. Table 5 - Available Terminal Blocks Type Color Catalog Numbers (Side) Screw terminals Blue LB9107A, LB9113A, LB9124A, LB9125A Front screw terminals Blue LB9117A, LB9118A, LB9119A, LB9127A Spring terminals...
- Page 18 Chapter 1 Product Specifications The catalog numbers for protective covers are LB9107.E.6, LB9107.E.8. Figure 14 - Protective Cover Dimensions Cold junctions Cold junctions have a prewired Pt100 thermocouple on terminal openings 1 and 2 for numerically correcting the thermoelectric voltage. Cold junctions are available exclusively in blue.
- Page 19 Product Specifications Chapter 1 prevents terminal blocks from being accidentally plugged into another I/O module. WARNING: Risk of confusing device connections. When coding the front sockets of the I/O modules, ensure that the codes are mutually exclusive. Otherwise there is the danger of incorrect mapping between devices and circuits in explosion-hazardous areas.
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Page 20: Cordsets
Chapter 1 Product Specifications Figure 19 - Dimensions of the F-NR2-Ex1 resistor network Figure 20 - Block diagram of the F-NR2-Ex1 resistor network F-NR2-Ex1 1.5 kΩ 10 kΩ Zone 1, 2 Cordsets WARNING: Explosion hazard through use of incorrect cordset. The use of incorrect cables in a potentially explosive atmosphere can create sparks that can ignite the surrounding atmosphere. - Page 21 Product Specifications Chapter 1 gateways are used in a redundant system, they must be connected using a cordset via the front M12 socket or plug to enable internal data exchange. Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
- Page 22 Chapter 1 Product Specifications Notes: Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
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Page 23: Testing Physical Connection Right To The End Of The Segment
If the 1.1 V voltage is not present, there is either no terminator connected at the end, the cable is faulty, or there is no terminating voltage at the 1718 Ex I/O unit. 4. Measure the current at the bus connector between A and B. -
Page 24: Testing Physical 1718 Ex I/O Unit Connection
For more information, refer to the software manual for the adapter used. Startup Phase IMPORTANT Do not start to operate all the 1718 Ex I/O units simultaneously; instead, connect each I/O unit to the master one after the other. Ensure that the master read cycle and the com unit watchdog coordinated with one another. - Page 25 Commissioning Chapter Preface Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
- Page 26 Chapter Preface Commissioning Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
- Page 27 Chapter Operation During operation, you can access up-to-date measured values and diagnostic information for the I/O modules via the adapter. For more information, refer to the software manual for the adapter used. In addition, you can read off basic information about supply and communication from the LEDs on the I/O modules and adapters.
- Page 28 Chapter Preface Operation Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
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Page 29: Communication Errors
Appendix Troubleshoot Your Module This chapter describes troubleshooting for RS-485-based bus systems. WARNING: Risk of explosion When work is performed on the remote I/O unit in hazardous areas, there is a risk of explosion from spark formation. Before starting any work on the remote I/O unit, familiarize yourself with the instruction manuals for the components and their relevant certificates. - Page 30 Appendix A Troubleshoot Your Module Table 9 - Redundancy faults Error Remedy Continuous redundancy switchover • Check that the correct type of redundancy is selected (media redundancy or application redundancy). • In the configuration software, check whether the master read cycle and the com unit watchdog are coordinated with one another.
- Page 31 Troubleshoot Your Module Appendix A Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
- Page 32 Appendix A Troubleshoot Your Module Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
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Page 33: Power Supply
Appendix Technical Data Topic Page Power Supply Mechanical Data Ambient Conditions ATTENTION: Damage to equipment Equipment can be damaged by voltages that are too high, for example, in temporary faulty operation. Ensure that the supply voltage of the power supplies used in Zone 2 does not exceed 33.6V DC (24V x 1.4). -
Page 34: Ambient Conditions
Appendix B Technical Data Ambient Conditions Ambient temperature: • Power supplies, I/O modules with non-intrinsically safe circuits: -20...+60 °C (-4 ...+140 °F) • Adapters, I/O modules with intrinsically safe circuits: -20...+60 °C (-4 ...+140 °F) Storage temperature: -25...+85 °C (-13 °F ... +185 °F) Relative humidity: 95% noncondensing Designed for pollution degree 2 Damaging gas: Designed for operation in environmental conditions according to... - Page 35 Appendix Additional HART Protocol Information This appendix discusses these topics. Topic Page Message Structure Response Code and Field Device Status HART PV, SV, TV, and FV Status This appendix describes the HART protocol and provides references for additional information about the protocol. Consult the HART protocol specification and vendor-provided documentation for specifics on HART commands.
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Page 36: Message Structure
Appendix C Additional HART Protocol Information Message Structure Read this section for a description of transaction procedure, character coding, and message structure of the HART protocol. These correspond to layer 2 (data- link layer) of the OSI protocol reference model. Master-slave Operation HART is a master-slave protocol. -
Page 37: Response Code And Field Device Status
Additional HART Protocol Information Appendix C Response Code and Two bytes of status also called the response code and field device status are included in every reply message from a field or slave device. These two bytes Field Device Status convey communication errors, command response problems, and field device status. - Page 38 Appendix C Additional HART Protocol Information Table 1 - Response Codes and Field Device Status (Continued) Response Code Description If Bit 7 is And Bits 6…0 are Applied Process Too Low - Lower Range Value Too Low - MultiDrop Not Supported In MultiDrop Mode - Invalid Transmitter Variable Code - Upper Range Value Too High Invalid Unit Code - Upper Range Value Too Low Both Range Values Out of Limits...
- Page 39 Additional HART Protocol Information Appendix C Table 3 - HART Universal Commands Command Data in Command Data in Reply Contained in Function Byte Data Type Byte Data Type Input Read current and None 0…3 Current (mA) four (predefined) PV units code dynamic variables 5…8 Primary variable...
- Page 40 Appendix C Additional HART Protocol Information Table 4 - Common Practice Commands Command Data in Command Data in Reply Contained in Function Byte Data Type Byte Data Type Input CIP MSG Read transmitter None Transmitter variable code for slot 0 variables Units code for slot 0 2…5...
- Page 41 Additional HART Protocol Information Appendix C Table 4 - Common Practice Commands Command Data in Command Data in Reply Contained in Function Byte Data Type Byte Data Type Input CIP MSG Write dynamic PV transmitter variable As in command variable code assignments SV transmitter variable...
- Page 42 Appendix C Additional HART Protocol Information Table 4 - Common Practice Commands Command Data in Command Data in Reply Contained in Function Byte Data Type Byte Data Type Input CIP MSG Read analog Slot 0 analog output number code outputs Slot 0 Analog output number;...
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Page 43: Hart Pv, Sv, Tv, And Fv Status
Additional HART Protocol Information Appendix C Table 4 - Common Practice Commands Command Data in Command Data in Reply Contained in Function Byte Data Type Byte Data Type Input CIP MSG Write Burst mode Transmitter variable As in command transmitter code for slot 0 variables (for Transmitter variable... - Page 44 Appendix C Additional HART Protocol Information HART PVStatus, SVStatus, TVStatus, FVStatus are known as Device Variable Status values. These Status values are composed of groups of bits that indicate the quality of the associated device variable. Device Family Specific Status Process Data Status More Device Variable Status Available 11 Good...
- Page 45 Additional HART Protocol Information Appendix C Table 5 - HART PV, SV, TV, and FV Status Values 00011000 Low Limited 00011001 Low Limited 00011010 Low Limited 00011011 Low Limited 00011100 Low Limited 00011101 Low Limited 00011110 Low Limited 00011111 Low Limited 00100000 High Limited 00100001...
- Page 46 Appendix C Additional HART Protocol Information Notes: Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
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Page 47: Code Number Details
Appendix Engineering Unit Code Numbers Code Number Details This table maps engineering unit code numbers to their meaning and abbreviations. These codes are used in the process variable range display. Unit Codes Description from HART Specification Abbreviated Units inches of water at 20 °C (68 °F) inH2O (20 °C or 68 °F) inches of mercury at 0 °C (32 °F) inHg (0 °C or 32 °F) - Page 48 Appendix D Engineering Unit Code Numbers Unit Codes Description from HART Specification Abbreviated Units Degrees Celsius °C Degrees Fahrenheit °F Degrees Rankine °R Kelvin °K millivolts ohms hertz milliamperes gallons liters imperial gallons impgal cubic meters cubic m feet meters barrels inches centimeters...
- Page 49 Engineering Unit Code Numbers Appendix D Unit Codes Description from HART Specification Abbreviated Units grams per hour kilograms per second kg/s kilograms per minute kg/min kilograms per hour kg/h kilograms per day kg/d metric tons per minute t/min metric tons per hour metric tons per day pounds per second lb/s...
- Page 50 Appendix D Engineering Unit Code Numbers Unit Codes Description from HART Specification Abbreviated Units cubic feet cubic ft cubic inches cubic in inches per second in/s inches per minute in/min feet per minute ft/min degrees per second °/s revolutions per second rev/s revolutions per minute meters per hour...
- Page 51 Engineering Unit Code Numbers Appendix D Unit Codes Description from HART Specification Abbreviated Units cubic feet per pound cubic ft/lb picofarads mililiters per liter mL/L microliters per liter microliters/L percent plato % plato percent lower explosion level % lower explosion level mega calorie Mcal Kilo-ohms...
- Page 52 Appendix D Engineering Unit Code Numbers Notes: Rockwell Automation Publication 1718-UM001A-EN-E - December 2019...
- Page 54 How Are We Doing? form at http://literature.rockwellautomation.com/idc/groups/literature/documents/du/ra-du002_-en-e.pdf. Rockwell Automation maintains current product environmental information on its website at http://www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/product-environmental-compliance.page. Allen-Bradley, CompactLogix, ControlLogix, FLEX 5000, Integrated Architecture, Logix5000, Logix 5000, Rockwell Automation, Rockwell Software, Studio 5000, and Studio 5000 Logix Designer are trademarks of Rockwell Automation, Inc.
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