It's a BLDC servo.
On the other drive I had trouble with (because I connected it wrong), it detected the problem and went into fault mode shortly. It may be that the PID parms are totally wrong, but then I would expect the oscillation to worsen exponentially and not go into a stable rhytm.
There are no pots, but I can do the same thing using a PC-program. I'm just used to getting the no-move behaviour without tweaking anything. Yes everything is well connected.
I'll have to pop in the OC930 option card and see what the setup is. It may be as you indicate that it is too far off to be able to control the motor. |