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

Published date: 16 October 2019

EPHI fault on the ATV21 and ATV212 drives.

Product Line:
Altivar ATV21, ATV212 and S-Flex


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

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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