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What is an OHF Fault on an ATV312?

Published date: 19 June 2020

ATV312 OHF fault

Product Line:
Altivar, ATV312 


Drive over heating fault.
Drive temperature too high

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. 

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