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What is an OHF Fault on an ATV312?
Issue:
ATV312 OHF fault

Product Line:
Altivar, ATV312

Environment:
All

Cause:
Drive over heating fault.
Drive temperature too high

Resolution:
Check the motor load, the drive ventilation and the environment. Wait for the drive to cool before restarting.
Check the see if the cooling fan is running.
The threshold for OHF fault is 118% based on heatsink temp.

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 is an OHF Fault on an ATV312?
Issue:
ATV312 OHF fault

Product Line:
Altivar, ATV312 

Environment: 
All

Cause: 
Drive over heating fault.
Drive temperature too high

Resolution:
Check the motor load, the drive ventilation and the environment. Wait for the drive to cool before restarting.
Check the see if the cooling fan is running.
The threshold for OHF fault is 118% based on heatsink temp. 

Schneider Electric Vietnam

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