User manual

8 Publication 1756-RM093F-EN-P - January 2010
Table of Contents
Create a Safety Add-On Instruction . . . . . . . . . . . . . . . . . 85
Generate Instruction Signature . . . . . . . . . . . . . . . . . . . . 85
Download and Generate Safety Instruction Signature. . . . 86
SIL 3 Add-On Instruction Qualification Test. . . . . . . . . . . 86
Confirm the Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Safety Validate Add-On Instructions . . . . . . . . . . . . . . . . 87
Create Signature History Entry . . . . . . . . . . . . . . . . . . . . 87
Export and Import the Safety Add-On Instruction . . . . . . 87
Verify Safety Add-On Instruction Signatures . . . . . . . . . . 88
Test the Application Program . . . . . . . . . . . . . . . . . . . . . 88
Project Verification Test . . . . . . . . . . . . . . . . . . . . . . . . . 88
Safety Validate Project . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Additional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Appendix C
Reaction Times
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
System Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Logix System Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . 89
Simple Input-logic-output Chain . . . . . . . . . . . . . . . . . . . 90
Logic Chain Using Produced/Consumed Safety Tags . . . . 91
Factors Affecting Logix Reaction-time Components . . . . . 92
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Appendix D
Checklists for GuardLogix Safety
Applications
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Checklist for GuardLogix Controller System . . . . . . . . . . . . . 96
Checklist for Safety Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Checklist for Safety Outputs. . . . . . . . . . . . . . . . . . . . . . . . . 98
Checklist for Developing a Safety Application Program. . . . . 99
Appendix E
Probability of Failure on Demand
(PFD) and Probability of Failure
per Hour (PFH) Data
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
GuardLogix Controller and Guard I/O Safety Data . . . . . . . 101
PFD Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
PFH Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Glossary
Index