Originally Posted by Michael M  The encoder is still in the motor and since I saw it run with the OEM Yaskawa spindle drive before it was taken off I don't see why the encoder shouldn't still be functioning. It appears that having sensor feedback is the best way to go, and at this point I'm not holding out much hope for this bigger standard VFD resolving the issues though I'll certainly hook it up and give it a try.
It seems that the Hitachi works fine with fairly "run of the mill" 3 phase motors, but it sure doesn't play well with this high speed Yaskawa motor.
cheers,
Michael |
Is there any name plate data on the motor. Its sounds more like a servo than a standard three phase induction motor.
Darek