Hi
We are getting a Ground Fault error F013 consistently (9 times out of 10) when we try to run one of our rolling mills in auto mode.
We do not get the issue when we jog forwards in manual.
This is a machine that we refurbished with this new drive and a new Nord motor.
We have megged the motor and it is good. We have checked the supply cable between the vfd and the motor and that is fine.
We have tested the setup with supply cable earth in 3 states, earthed both ends, earthed motor end only and completely unearthed.
Obviously this was purely for fault tracing and not intended for permanent state.
The fault remains.
The firmware is 5.001 I believe.
There is an end encoder on the end of armature and 24v case fan fitted to the motor.
We have a twin machine that was refurbished at the same time and that is working fine, only difference is an SEW motor of the the same size.
Our plan is to pull the known good drive and temporarily trying it, without auto tuning so we can reinstate the working mill.
Does anyone have any thoughts on further checks or a solution please?
Many thanks in advance