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    How can I prevent Undervoltage faults on ATV61 drives?

    Issue:
    How can I prevent Undervoltage faults on ATV61 drives?

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

    Environment:
    All

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

    Resolution:
    Go to Drive Menu > 1.8 Fault Management > Undervoltage Mgt.  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. 
     

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