Reference Manual Owner's manual

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
Safety Certification
15
Functional Proof Tests 18
PFD and PFH Definitions 18
Safe State 19
Safety Reaction Time 20
Considerations for Safety Ratings 20
Contact Information if Safety Option Failure Occurs 22