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ATV212 - It stopped with EPH1. What is that fault?

Issue:
The drive stopped and the display shows EPH1

Product Line:
ATV212, ATV21

Environment:
All models and serial numbers

Cause:
External or internal

Resolution:
EPH1 is an input phase loss.  Verify the wiring connections on all three phases coming into the drive (R/L1-S/L2-T/L3).  Measure line to line voltages to make sure they are all present and equal phase to phase.  To reset the drive, cycle power.  Turn off the line voltage until the display goes off.  Then turn the voltage back on.

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