What is the cause of the EF2 fault code on the ATV21 and ATV212 drives?
ATV212: EF2 Fault
All models, all serial numbers
Ground Fault on the output of the drive.
EF2= Ground Fault
Check the motor ground connections. Make sure the ground is going to the chassis of the drive.
Remove the motor leads from the drive and megger with a 1KV megger to see if there is a short to ground in the motor windings.
Reference the ATV212 programming manual S1A53838.