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Search FAQs

What amount of current imbalance is needed for EPHO fault to be triggered on the ATV212 series drives?

Issue:
EPHO fault detected, what causes this?

Product Line:
ATV212 series drives.  Open style and Enclosed versions.

Environment:
All models, All serial numbers.

Cause:
Information unavailable in current literature.

Resolution:
When the current draw on any phase drops to 25% or less of the load current and remains 25% or below for 90 degrees of rotation within the phase, EPHO fault is triggered.  This fault detection is designed to detect a load imbalance or an open phase(s) on the output of the drive and stop the drive.  
 
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