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    What can cause on OC1 fault on the ATV21 and ATV212 drives?

    Issue:
    What can cause on OC1 fault on the ATV21 and ATV212 drives?

    Product Line:
    Altivar ATV21 and ATV212

    Environment:
    All 

    Cause:
    Over current during acceleration

    Resolution:
    Try increasing the ACC time or the ACC2 time.
    Try adjusting the PT parameter
    Try enabling catch on the fly F301 to 4
    Try adjusting the switching frequency F300
    Try setting F316 parameter to 1 or 3. 
     

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