FA275027
03 June 2022
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.
