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What is OCF in the ATV18?  

What is OCF in the ATV18?  

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Customer getting OcF fault on the ATV18 display, what is this fault saying and how to fix it?

OCF is an overcurrent fault 

Check the motor load.
Check the motor connections between the motor and drive. 
Check the drive settings verify their match the motor nameplate. 
Remove the motor leads, turn off OPL and test the drive with no load. 
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