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    What can cause an EPHI fault on the ATV21 and ATV212 drives?

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

    Product Line:
    Altivar ATV21, ATV212 and S-Flex

    Environment:
    All

    Cause:
    Input fuse is blown or missing voltage on the input of the drive.

    Resolution:
    EPHI is an Input phase loss,   Check all the input connections to the drive. With power removed, perfom static checks on the input rectifiers. Apply power and check with a digital meter  to see if you have good voltage on your input leads of the drive, at L1,  L2  and  L3.

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