278 Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Appendix E          SIL 2 Applications Checklist
No. For Energize-to-action SIL 2 Applications
Fulfilled
Comment
Yes No
1. Are the redundant power sources inherently constrained to output less than 32 volts
 
 
2.
If there any safety-related, normally de-energized outputs, have you provided redundant power 
sources, power failure warning, and line monitoring?
 
 
3.
Do energize-to-action configurations conform to the restrictions (defined in this manual) that must 
be applied when using these configurations?
 
 
4. For energize-to-action SIL 2 applications, have dual output modules been configured?
 
 
Checklist for 1715 I/O Modules