Safety concept, Introduction, Safety certification – Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual User Manual
Page 15: Chapter 1, Introduction safety certification, Chapter
Rockwell Automation Publication 750-RM001F-EN-P - February 2012
15
Chapter
1
Safety Concept
Introduction
This chapter describes the safety performance level concept and how the
PowerFlex 750-Series drives can meet the requirements for SIL CL3, CAT 4, or
PL e applications.
Safety Certification
The PowerFlex 750-Series safety option is certified for use in safety applications
up to and including SIL CL3 according to EN 61800-5-2, EN 61508, and EN
62061, Performance Level PL e and CAT 4 according to ISO 13849-1. Safety
requirements are based on the standards current at the time of certification.
The TÜV Rheinland group has approved the PowerFlex 750-Series safety option
for use in safety-related applications where the de-energized state is considered to
be the safe state. All of the examples related to I/O included in this manual are
based on achieving de-energization as the safe state for typical Machine Safety
and Emergency Shutdown (ESD) systems.
Topic
Page
Considerations for Safety Ratings