Quote Originally Posted by Spyke View Post
It is wired as delta, what do you mean with wired correctly at the motor end? V is V, W is W, U is U.
Yes its a 2 pole motor. I checked all connections several times and do also a trough check with multimeter.
Max current is set to 8000.

I saw in different videos nobody needs torque compensation for starting motor with load.
It seams that one phase has not enough power and causes the motor stuttering under load. So I think something is wrong with my Vfd.
I just meant to check if it is wired delta. If you have an oscilloscope and current clamp you could do some checking but you could be right and the inverter is maybe faulty. Is it new and a recent purchase? See what the seller has to say about it.