Rockwell Automation T8094 8000 Series TMR System Safety Manual - Manual (Page 16)

SAFETY MANUAL
D oc N umber T8094
I ssue 27 – June 2013
Page xvi
TABLE OF CONTENTS
Paragraph Page
1. INTRODUCTION ............................................................................................ 1
1.1 PURPOSE OF SAFETY ............................................................................ 1
1.2 ASSOCIATED DOCUMENTS ................................................................... 2
1.3 TERMINOLOGY ........................................................................................ 2
1.3.1 Safety and Functional Safety ........................................................... 3
1.3.2 Safety Integrity and Risk Class Levels ............................................ 3
1.3.3 Process Safety Time (PST) ............................................................. 4
1.4 THE 8000 SERIES OVERVIEW ................................................................ 7
2. SAFETY PRINCIPLES .................................................................................... 8
2.1 INTRODUCTION ....................................................................................... 8
2.2 SAFETY MANAGEMENT .......................................................................... 8
2.2.1 Safety Lifecycle ................................................................................ 9
2.3 FUNCTIONAL SAFETY ASSESSMENT ................................................. 16
2.3.1 Competency................................................................................... 17
3. SYSTEM RECOMMENDATIONS ................................................................. 18
3.1 INTRODUCTION ..................................................................................... 18
3.2 I/O ARCHITECTURES ............................................................................ 18
3.2.1 Safety-Related Configurations ....................................................... 19
3.2.2 High-Density I/O ............................................................................ 23
3.2.3 Analog Input Safety Accuracy ........................................................ 25
3.2.4 Energise to Action Configurations ................................................. 25
3.2.5 EN 60204 Category 0 & 1 Configurations ...................................... 26
3.2.6 NFPA 72 Requirements ................................................................. 26
3.2.7 NFPA 85 Requirements ................................................................. 26
3.2.8 NFPA 86 Requirements ................................................................. 27
3.2.9 EN54 Requirements ...................................................................... 28
3.3 SENSOR CONFIGURATIONS ................................................................ 30
3.4 ACTUATOR CONFIGURATIONS ........................................................... 31
3.5 PFD CALCULATIONS ............................................................................. 31
3.6 PROCESSOR CONFIGURATION ........................................................... 32
3.6.1 Timing ............................................................................................ 32
3.6.2 Diagnostic Access ......................................................................... 33
3.6.3 Configuration File Verification ........................................................ 33
3.7 HIGH DENSITY I/O MODULE CONFIGURATION .................................. 33
3.7.1 Module Characteristics .................................................................. 33
3.7.2 Module Replacement Configuration .............................................. 35
3.8 INPUT AND OUTPUT FORCING ............................................................ 36
3.9 MAINTENANCE OVERRIDES................................................................. 37
3.10 PEER COMMUNICATIONS CONFIGURATION ..................................... 38
3.11 APPLICATION PROGRAM DEVELOPMENT ......................................... 38
3.11.1 IEC1131 Workbench Configuration ............................................... 40
3.11.2 Language Selection ....................................................................... 41
3.11.3 Testing of New or Previously Untested Functions ......................... 42
3.11.4 Application Development ............................................................... 44