Allen-Bradley PowerFlex 527, User Manual

Page: 108 / 176

108 Rockwell Automation Publication 520-UM002B-EN-E - December 2017
Chapter 6 Network Control of Safe Torque-Off
Setting the SNN with a GuardLogix Controller
Replacement with “Configure Only When No Safety Signature Exists”
Enabled
When a PowerFlex 527 drive is replaced and the DeviceID of the new drive
matches the original, you can download the configuration from the safety
controller. The DeviceID is a combination of the node/IP address and the safety
network number (SNN), and is updated whenever the SNN is set.
If the project is configured as Configure Only When No Safety Signature Exists,
follow the appropriate instructions in
Replacing a PowerFlex 527 Drive on
page 108 to replace a PowerFlex 527 drive based on your scenario. Once you have
completed the steps correctly and the DeviceID matches the original, the safety
controller can download the proper drive configuration and re-establish the
safety connection.
Replacing a PowerFlex 527 Drive
GuardLogix Safety
Signature Exists GuardLogix Safety Signature Exists Action Required
No No SNN (out-of-box) None. The module is ready for use.
Yes or No Same SNN as original safety task configuration
Yes No SNN (out-of-box) Refer to Scenario 1 on page 109 .
Yes Different SNN than original safety task
configuration Refer to Scenario 2 on page 110 .
No Refer to Scenario 3 on page 112 .