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GuardLogix Safety Application Instruction Set Safety Reference Manual

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GuardLogix Safety Application Instruction SetCatalog Numbers 1756-L61S, 1756-L62S, 1756-L63S, 1756-LSP, 1756-L72S, 1756-L73S, 1756-L7SP, 1756-L72SXT, 1756-L7SPXT, 1768-L43S, 1768-L45SSafety Reference ManualImportant User InformationSolid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1 available from your local Rockwell Automation® sales office or online at http://www.rockwellautomation.com/literature/) describes some important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.Throughout this manual, when necessary, we use notes to make you aware of safety considerations.Allen-Bradley, Rockwell Automation, GuardLogix, Guard I/O, CompactBlock Guard I/O, ControlLogix, Logix5000, and TechConnect are trademarks of Rockwell Automation, Inc.Trademarks not belonging to Rockwell Automation are property of their respective companies.WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.IMPORTANTIdentifies information that is critical for successful application and understanding of the product.Rockwell Automation Publication 1756-RM095E-EN-P - February 20123Summary of ChangesThis manual contains new and updated information. Changes throughout this revision are marked by change bars, as shown to the right of this paragraph.New and Updated InformationThis table contains the changes made to this revision.TopicPageAdded information on changing parameters while in Run mode to each instructionThroughoutDual-channel Analog Input (DCA) instruction91Corrected diagnostic signal code for Actuate input136Clarified the operational description of the Output 1 (O1) and Fault Present (FP) parameters of the Cam Shaft Monitor (CSM) instruction248Updated execution timesAppendixB4Rockwell Automation Publication 1756-RM095E-EN-P - February 2012Summary of ChangesNotes:Rockwell Automation Publication 1756-RM095E-EN-P - February 20125Table of ContentsPrefaceGuardLogix Controller Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Additional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Chapter 1General Safety Application InstructionsDual-channel Input Start (DCSRT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18DCSRT – Instruction Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18DCSRT – Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21DCSRT – Input Status Fault Operation. . . . . . . . . . . . . . . . . . . . . . . . 22DCSRT – Discrepancy Fault Operation. . . . . . . . . . . . . . . . . . . . . . . . 23DCSRT– False Rung State Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . 23DCSRT – Fault and Diagnostic Codes. . . . . . . . . . . . . . . . . . . . . . . . . 24DCSRT – Wiring and Programming Example . . . . . . . . . . . . . . . . . . 25Dual-channel Input Monitor (DCM). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28DCM – Instruction Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28DCM – Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31DCM – Input Status Fault Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 32DCM – Discrepancy Fault Operation. . . . . . . . . . . . . . . . . . . . . . . . . . 33DCM – False Rung State Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33DCM – Fault and Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 34DCM – Wiring and Programming Example . . . . . . . . . . . . . . . . . . . . 35Dual-channel Input Stop (DCS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38DCS – Instruction Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38DCS – Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41DCS – Input Status Fault (Manual Cold Start) . . . . . . . . . . . . . . . . . 46DCS – Cycle Inputs Fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48DCS – Discrepancy Fault . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49DCS – False Rung State Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49DCS – Fault and Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50DCS – Wiring and Programming Example . . . . . . . . . . . . . . . . . . . . . 51Dual-channel Input Stop with Test (DCST) . . . . . . . . . . . . . . . . . . . . . . . 54DCST – Instruction Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54DCST – Functional Test Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 57DCST – False Rung State Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58DCST – Fault and Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . 59DCST – Wiring and Programming Example. . . . . . . . . . . . . . . . . . . . 60Dual-channel Input Stop with Test and Lock (DCSTL). . . . . . . . . . . . . 64DCSTL – Instruction Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65DCSTL – Start-up Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68DCSTL – Device Not Tested After Unlock Fault. . . . . . . . . . . . . . . 70DCSTL – Functional Test After Fault Operation. . . . . . . . . . . . . . . 71DCSTL – False Rung State Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . 72DCSTL – Fault and Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . 72DCSTL – Wiring and Programming Example . . . . . . . . . . . . . . . . . . 74

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