we have a few compact 5 cnc with dead controls. There where some surplus pittman servos we bought a few year ago - small but had some heds 500 line encoders. Thought we could use them for something..

We mocked up a setup to see if the pitman motors where big enough. They seem to be.

-5i25 with a custom bit file that has pwm/dir on one plug and encoder counters on the other.
-pwm/dir input AMC servo drives 15 amp 80v (the servos are rated at 24v)
-cheap BOB

after hacking a config



Attachment 347528

Pretty darn happy - with that simple setup - we are getting .0002 following error. They seem to have more than enough power. (the testing was done with a 1amp 25v supply.) Currently 150ipm

sam