How to configure my servomotor and third party servodrive using Servo Tune

[TriboMan]

I am trying to configure a small servomotor using a PCI 7342 motion controller and a third party servo power drive. When powered up, the motor spins at max rpm and when run, the Auto Tune function doesn't seem to have any effect other than changing the motor direction and running at -max rpm. So far as I know, the motor is set up correctly and encoder is fully functional. I have tried the default servo settings in MAX and also custom settings of what I deem to be correct for the system. The Auto Tune returns values for PID as 0, 32767, 0 respectively and changing these does have a slight effect on accelerations, but the motor has never been stabilised at 0rpm. I have changed the encoder connectio
ns (as suggected by fozzy 27/02/2002) but to no avail. I'm at a total loss.... Please Help!! Cheers.

[daniel s]

i had the same problem with my servomotor from Thorlabs. what happens when you step the servo? does it travel until it hits the hardware limit? mine did this as it wasnt recieving any feedback from the encoder, im in the process of getting an exchange at the moment. luckily i had another servo to diagnose the prob.

dan
dsmol@cyllene*uwa*edu*au