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How can I prevent Undervoltage faults on ATV61 drives?

FA275027

12 April 2021

Issue:
Prevent Undervoltage fault on ATV61 drive.

Product line:
ATV61, Altivar 61, ATV71, Altivar 71

Environment:
All

Cause:
Temporary voltage drops is causing UVR - Under voltage fault

Resolution:
Go to Drive Menu > 1.8 Fault Management > Undervoltage Mgt, and change the Undervoltage timeout from 0.2s to somewhere between 5-10s. 

If the line voltage is less than 480VAC, we can also look at adjusting the Mains Voltage setting to 460V which lowers the trip level for the Undervoltage fault.