Rockwell Automation Publication 520-UM001K-EN-E - August 2021
237
Appendix
G
Safe Torque Off Function
The PowerFlex 525 Safe-Torque-Off function, when used with other safety
components, helps provide protection according to EN ISO 13849 and EN62061
for safe-off and protection against restart. The PowerFlex 525 Safe-Torque-Off
function is just one component in a safety control system. Components in the
system must be chosen and applied appropriately to achieve the desired level
of operator safeguarding.
PowerFlex 525 Safe-
Torque-Off Overview
The PowerFlex 525 Safe-Torque-Off function:
•
Provides the Safe-Torque-Off (STO) function defined in
EN 61800-5-2.
•
Blocks gate-firing signals from reaching the Insulated Gate Bipolar
Transistor (IGBT) output devices of the drive. This prevents the IGBTs
from switching in the sequence necessary to generate torque in the
motor.
•
Can be used in combination with other safety devices to fulfill the
requirements of a system “safe torque off” function which satisfies
Topic
Page
PowerFlex 525 Safe-Torque-Off Overview
EC Type Examination Certification
Using PowerFlex 525 Safe-Torque-Off
Enabling PowerFlex 525 Safe-Torque-Off
PowerFlex 525 Safe-Torque-Off Operation
PowerFlex 525 Certification for Safe-Torque-Off
IMPORTANT
The Safe-Torque-Off function covered in this chapter is specific to
PowerFlex 525 drives only.
Summary of Contents for Allen-Bradley PowerFlex 520 Series
Page 8: ...8 Rockwell Automation Publication 520 UM001K EN E August 2021 Table of Contents Notes ...
Page 68: ...68 Rockwell Automation Publication 520 UM001K EN E August 2021 Chapter 2 Start Up Notes ...
Page 236: ...236 Rockwell Automation Publication 520 UM001K EN E August 2021 Appendix F PID Set Up Notes ...
Page 270: ...270 Rockwell Automation Publication 520 UM001K EN E August 2021 Index Notes ...