Verification And Validation Plan - Rockwell Automation Allen-Bradley Compact GuardLogix 5370 Controller Application Technique

Door Locking and Monitoring with a 442G Access Box and an Integrated Safety Controller Safety Function
The DCavg (99%) for the contactors is selected from the Output Device table of ISO 13849-1 Annex E, Direct
Monitoring.
The CCF value is generated by using the scoring process that is outlined in Annex F of ISO 13849-1. The complete CCF
scoring process must be performed when actually implementing an application. A minimum score of 65 must be
achieved.

Verification and Validation Plan

Verification and validation play important roles in the avoidance of faults throughout the safety system design and
development process. ISO 13849-2 sets the requirements for verification and validation. The standard calls for a
documented plan to confirm that all safety functional requirements have been met.
Verification is an analysis of the resulting safety control system. The Performance Level (PL) of the safety control system
is calculated to confirm that the system meets the required Performance Level (PLr) specified. The SISTEMA software
is typically used to perform the calculations and assist with satisfying the requirements of ISO 13849-1.
Validation is a functional test of the safety control system to demonstrate that the system meets the specified
requirements of the safety function. The safety control system is tested to confirm that all safety-related outputs respond
appropriately to their corresponding safety-related inputs. The functional test includes normal operating conditions and
potential fault injection of failure modes. A checklist is typically used to document the validation of the safety control
system.
Before validating the GuardLogix Safety System, confirm that the safety system and safety application program have been
designed in accordance with the controller safety reference manuals listed in the Additional Resources, and the
GuardLogix Safety Application Instruction Set Reference Manual, publication 1756-RM095.
For a validation checklist, see the attached spreadsheet.
22 Rockwell Automation Publication SAFETY-AT129B-EN-P - November 2018