Safety Considerations Guide for Triconex General ... - ICEWeb

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96 Index EX03_shutdown programs 58 external communication, diagnostics 41–42 external faults 34 external write modes 22 F factors SIL 4 SIS 5 fault reporting times, diagnostic calculation 39 faults, types of 34 fire and gas systems, guidelines 18 flags, semaphore 41 function blocks defining for safety-critical modules 56 Peer-to-Peer 66–68 SYS_CRITICAL_I/O 81–85 SYS_SHUTDOWN 86–91 SYS_VOTE_MODE 92–94 TR_SEND 66, 68 TR_URCV 66–68 functions, Modbus master 20 G guidelines all safety systems 17 burner management systems 18 controllers 19 development 44 disabled output voter diagnostics 20 disabled points alarm 20, 59 Download All command 20 emergency shutdown systems 18 fire and gas systems 18 for controller 19 maintenance overrides 24–27 Modbus master functions 20 Peer-to-Peer communication 20–22 programming permitted alarm 59 remote access alarm 59 response time 20, 59 safety system boundary 27 safety-critical modules 19 safety-shutdown systems 20 scan time 20, 59 SIL fire and gas 23 SILs 22–23 H hazard and risk analysis 5 HAZOP 5, 6 I I/O modules alarms 40 processing 40 system-critical 49 IEC 61508, parts 1–7 12 infinite loops 45 input module alarms analog 36 digital 37 input module diagnostics analog 36 digital 37 pulse 38 internal faults 34 L layers, protection 3, 5 M main processors diagnostics 40 system attributes 41 Tribus 40 maintenance overrides design requirements for handling 25 documentation of 26 guidelines 24–27 operating requirements for handling 26 serial communications 24 Modbus master functions 20 modes, operating 35–36 module alarms analog input 36 analog output 37 digital input 37 digital output 38 I/O 40 pulse input 38 solid-state relay output 38 module diagnostics analog input 36 analog output 37 digital input 36 digital output 37 pulse input 38 solid-state relay output 38 modules safety-critical 19 shutdown programs for all safety-critical I/O 49–52 shutdown programs for some safety-critical I/O 53– 55 Safety Considerations Guide for Triconex General Purpose v2 Systems
Index 97 N NFPA 85 12 O operating modes 35–36 output module alarms analog 37 digital 38 solid-state relay 38 output module diagnostics analog 37 digital 37 solid-state relay 38 output operations alarm 52 output voter diagnostics 20 OVD, See output voter diagnostics overrides, maintenance guidelines 24–27 overrun, scan 48 overview, safety 5 P partitioned processes 57 Peer-to-Peer communication function blocks 66–68 function blocks, errors 65 function blocks, examples 66–68 guidelines 20–22 overview 20, 62 sending node 21 Peer-to-Peer function blocks, using with critical data 21 PFDavg, calculating 7 points alarm, disabled guidelines for 20 usage of 59 processes, partitioning 57 processing, I/O modules 40 Product Alert Notices 44 program mode 22 programmable electronic systems 4 programming permitted alarm, usage 59 programs EX01_shutdown 49 EX02_shutdown 53 EX03_shutdown 58 recommendations for DCS programs 26 shutdown for all safety-critical I/O modules 49–52 shutdown for some safety-critical I/O modules 53–55 project change control 23 protection layers 3, 5 pulse input modules alarms 38 diagnostics 38 R remote access alarm 59 remote mode 22 reporting times, diagnostic calculation 39 requested scan time 47 response time alarm 59 guidelines 20 usage 59 risk probability 6 risk, reduction of 3, 5, 7 S safe failure fraction calculation 7 safety attribute 44 methods for 2 overviews 5 requirement specifications 10 safety integrity levels, See SILs safety life cycle model 9 safety life cycles, PES steps 10–11 safety methods 2 safety system boundary 27 safety systems, guidelines 17 safety-critical fault 35 safety-critical modules defining function blocks 56 guidelines 19 shutdown programs for all I/O 49–52 shutdown programs for some I/O 53–55 safety-instrumented systems, See SISs safety-shutdown guidelines 20 networks 20 programs for all safety-critical I/O modules 49–52 programs for some safety-critical I/O modules 53–55 scan overrun 48 scan surplus 46, 47 scan time actual 47 defined 47 guidelines 20 maximum exceeded 45 requested 47 usage 59 with response times 20, 59 semaphore flags 41 Safety Considerations Guide for Triconex General Purpose v2 Systems
Page 1 and 2:
Triconex General Purpose v2 Systems
Page 3 and 4:
Contents Preface vii Summary of Sec
Page 5 and 6:
Contents v Partitioned Processes. .
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Preface This guide provides informa
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Preface ix • All other requests a
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1 Safety Concepts Overview 2 Hazard
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Overview 3 Protection Layers Method
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Hazard and Risk Analysis 5 Hazard a
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Hazard and Risk Analysis 7 Sample S
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Hazard and Risk Analysis 9 Safety L
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Hazard and Risk Analysis 11 • Eac
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Safety Standards 13 CAN/CSA-C22.2 N
Page 25 and 26:
2 Application Guidelines Overview 1
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General Guidelines 17 General Guide
Page 29 and 30:
Guidelines for Triconex Controllers
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Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
3 Fault Management Overview 32 Syst
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System Diagnostics 33 System Diagno
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Operating Modes 35 Operating Modes
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Module Diagnostics 37 Analog Output
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Module Diagnostics 39 Calculation f
Page 51 and 52:
Module Diagnostics 41 External Comm
Page 53 and 54:
4 Application Development Developme
Page 55 and 56: Development Guidelines 45 Array Ind
Page 57 and 58: Setting Scan Time 47 application. T
Page 59 and 60: Sample Safety-Shutdown Programs 49
Page 69 and 70: Alarm Usage 59 Alarm Usage To imple
Page 71 and 72: A Triconex Peer-to-Peer Communicati
Page 73 and 74: Data Transfer Time 63 Data Transfer
Page 75 and 76: Data Transfer Time 65 A typical dat
Page 77 and 78: Examples of Peer-to-Peer Applicatio
Page 79 and 80: B HART Communication Overview 70 HA
Page 81 and 82: HART Position Paper from TÜV Rhein
Page 89 and 90: C Safety-Critical Function Blocks O
Page 91 and 92: SYS_CRITICAL_IO 81 SYS_CRITICAL_IO
Page 93 and 94: SYS_CRITICAL_IO 83 Library Trident
Page 95 and 96: SYS_CRITICAL_IO 85 END_IF ; PREVIOU
Page 97 and 98: SYS_SHUTDOWN 87 Output Parameters (
Page 99 and 100: SYS_SHUTDOWN 89 * the safety system
Page 101 and 102: SYS_SHUTDOWN 91 ALARM_DISABLED_POIN
Page 103 and 104: SYS_VOTE_MODE 93 Example For shutdo
Page 105: Index A abbreviations, list of viii
Page 110: Invensys Operations Management 5601
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