Epoxy granite vertical mill build log

[Nick]

Nick. What mode are you using ie position or torque etc. Have you seen or read this:-

https://forum.linuxcnc.org/10-advanc...etailed-how-to

I am in the same boat as you and struggling with a following error when using closed loop. Changing closed to open loop is just one change in the hal file.
This is also my first time with halscope

Yeah, that's what i've been following, really useful. I also found the John Thornton guide's. Using speed mode, via a mesa 7i77, so linuxCNC is running the position loop.

I will try torque at some point I think. I'm sure the issue is with the drive speed and torque PI loops. How have you gotten on with setting the drive PI settings? I'f i put it in open loop I think the axis will drift and I don't think I could command an analog signal? or maybe I could?

[JAZZCNC]

Nick, Clive is using Step & Dir Mesa card not Analog +/-10v using Position mode in the drive. He's using the same AASD Drive as you but 30A with 1.8Kw servo.

[Clive S]

Yeah, that's what i've been following, really useful. I also found the John Thornton guide's. Using speed mode, via a mesa 7i77, so linuxCNC is running the position loop.

I will try torque at some point I think. I'm sure the issue is with the drive speed and torque PI loops. How have you gotten on with setting the drive PI settings? I'f i put it in open loop I think the axis will drift and I don't think I could command an analog signal? or maybe I could?

I believe that torque mode is more difficult . I am using step/dir not analogue which should be easier.

I will be away for a few days but will catch up on my return.