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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.

Schneider Electric Vietnam

You are currently viewing the content available in Vietnam. If you are looking for information for another region, please select the correct country from the top-left dropdown in the page and 'Navigate to Browse FAQs' in the Support menu.
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.  
 

Schneider Electric Vietnam

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