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What is UrF fault on the ATV630 and ATV930 drives?

Published date: 23 July 2019

Issue: 
What is UrF fault on the ATV630 and ATV930 drives?

Product Line:
ATV630 ATV930

Environment:
All model numbers, all serial numbers

Cause:
The DC bus is monitored against undervoltage by the AFE bricks, if too low DC Bus Voltage due to main undervoltage.  (DC Bus voltage < URA level.)

Resolution:
Verify mains voltage.  Verify the size of the load/motor/drive according to environment conditions.

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