Safety Considerations Guide, Tricon v9.0 - Tuv-fs.com

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22 General GuidelinesFire and Gas SystemsFire and gas applications typically do not have a safe state and should operatecontinuously to provide protection. The following industry guidelines apply:• If inputs and outputs are energized to mitigate a problem, a PES systemshould detect and alarm open and short circuits in the wiring between thePES and the field devices.• An entire PES system should have redundant power supplies. Also, thepower supplies that are required to activate critical outputs and read safetycriticalinputs should be redundant. All power supplies should be monitoredfor proper operation.• De-energized outputs may be used for normal operation. To initiate actionto mitigate a problem, the outputs are energized. This type of system shouldmonitor the critical output circuits to ensure that they are properlyconnected to the end devices.Tricon Safety Considerations Guide
Guidelines for Tricon Controllers 23Guidelines for Tricon ControllersThe following topics relate to industry guidelines that are specific to Triconcontrollers when used as a PES in an SIS:• Safety-critical modules• Safe shutdown• Programming lockout alarm• Remote access alarm• Scan time and response time alarm• Disabled points alarm• Disabled output voters• Download all• Use of Peer-to-Peer functions• Modbus master functions• SIL3/AK5 guidelines• SIL3/AK5 fire and gas guidelines• SIL3/AK6 guidelines• SIL3/AK6 fire and gas guidelines• Project change and controlChapter 2Application Guidelines
Page 1 and 2: TriconVersion 9Safety Consideration
Page 3: AcknowledgementTriconex acknowledge
Page 6 and 7: viRelated DocumentsRelated Document
Page 8 and 9: viiiHow to Contact TriconexHow to C
Page 10: xTrainingFor Turbomachinery Systems
Page 13 and 14: xiCONTENTSAbout This Guide ........
Page 15 and 16: xiiiAnalog Input Module Alarms ....
Page 17 and 18: CHAPTER 1Safety ConceptsThis chapte
Page 19 and 20: Safety Overview 3Protection LayersT
Page 21 and 22: Hazard and Risk Analysis 5Hazard an
Page 23 and 24: Hazard and Risk Analysis 7Completio
Page 25 and 26: Hazard and Risk Analysis 9Equation
Page 27 and 28: Hazard and Risk Analysis 11Flowchar
Page 29 and 30: Hazard and Risk Analysis 13Some key
Page 31 and 32: Safety Standards 15Safety Standards
Page 33 and 34: Safety Standards 17Application-Spec
Page 35 and 36: CHAPTER 2Application GuidelinesThis
Page 37: General Guidelines 21• Under cert
Page 41 and 42: Guidelines for Tricon Controllers 2
Page 53 and 54: CHAPTER 3Fault ManagementThis chapt
Page 55 and 56: System Diagnostics 39System Diagnos
Page 57 and 58: Operating Modes 41Operating ModesEa
Page 59 and 60: Module Diagnostics 43Module Diagnos
Page 61 and 62: Module Diagnostics 45Relay Output M
Page 63 and 64: Module Diagnostics 47System Attribu
Page 65 and 66: CHAPTER 4Application DevelopmentThi
Page 67 and 68: Important TriStation Commands 51Imp
Page 69 and 70: Setting Scan Time 53Setting Scan Ti
Page 71 and 72: Sample Safety-Shutdown Programs 55S
Page 73 and 74: Sample Safety-Shutdown Programs 57I
Page 75 and 76: Sample Safety-Shutdown Programs 59A
Page 77 and 78: Sample Safety-Shutdown Programs 61P
Page 79 and 80: Sample Safety-Shutdown Programs 63O
Page 81 and 82: Sample Safety-Shutdown Programs 65D
Page 83 and 84: Sample Safety-Shutdown Programs 67P
Page 85 and 86: APPENDIX APeer-to-Peer Communicatio
Page 87 and 88: Data Transfer Time 71ParameterTS =S
Page 89 and 90:
Examples of Peer-to-Peer Applicatio
Page 91 and 92:
TR_CRITICAL_IO Function Block 75TR_
Page 93 and 94:
TR_CRITICAL_IO Function Block 77Par
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TR_CRITICAL_IO Function Block 79Str
Page 97 and 98:
TR_CRITICAL_IO Function Block 81CO
Page 99 and 100:
TR_SHUTDOWN Function Block 83Parame
Page 101 and 102:
TR_SHUTDOWN Function Block 85Relate
Page 103 and 104:
TR_SHUTDOWN Function Block 87* Exam
Page 105 and 106:
TR_SHUTDOWN Function Block 89TIMER_
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TR_VOTE_MODE Function Block 91Param
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TR_VOTE_MODE Function Block 93Appen
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APPENDIX BShutdown Function BlocksT
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TR_CRITICAL_IO Function Block 974 R
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TR_CRITICAL_IO Function Block 99Rel
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TR_CRITICAL_IO Function Block 101*
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TR_SHUTDOWN Function Block 103TR_SH
Page 121 and 122:
TR_SHUTDOWN Function Block 105Param
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TR_SHUTDOWN Function Block 107Struc
Page 125 and 126:
TR_SHUTDOWN Function Block 109IF CI
Page 127 and 128:
TR_VOTE_MODE Function Block 111TR_V
Page 129 and 130:
TR_VOTE_MODE Function Block 113Stru
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Index 115IndexAactual scan time 53a
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Index 117Modbus master functions 25
Page 135 and 136:
Index 119timescan 53TMR architectur
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