I also had a rather frustrating afternoon. Went to use the bandsaw for a bit of domestic renovation and to my surprise and dismay it wouldn't go. Opening it up I found a mouse nest in the base and the little so and so's had completely chewed through one of the internal cables: sheath, insulation and copper, the lot. It will be quite an awkward job to fix. Oh well, the joys of living in the English countryside.
Craig
Thanks for stepping in. I suspected the encoders would be 10000ppr. I have no experience of these dc servos and drives at all, so could do with your knowledge of this stuff.
Mick
The CSMIO cannot produce more than +/-10V however it is tuned, and that should cause your motor to reach maximum speed. So either the servo's gain is lower than expected, or the motor is current limiting for some reason. Does the servo drive have any diagnostics or error indications? I guess I've been spoilt by modern ac servos and drives.
You need to be confident the drive is working and tuned correctly before you can sensibly tune the CSMIO. Your current settings sound very strange to me, I would expect the proporthional gain setting to be a lot (10x ?) higher than the integral gain. But I would leave the CSMIO until you have resolved why the drive cannot produce the motor speed you expect.
Do you have the original or the FP4 version of the CSMIO ?
Allan