i have a prs alpha control system with a spindle. i have been using this set up for over the past 3-4 years. with no problems and working great. no problems of any kinds.
then today false limits started at soon as i started the machine. the last time i use the machine several weeks ago, it worked perfect.
the false limits today only occur when the spindle was turned on. without the spindle running the file runs correctly. as soon as the spindle is turned on it gives a limit problem. i have all of the spindle wires running in a completely separate chase from the limit wires. i have checked the grounding of the spindle, seems to be find. any other ideas on what else to check.

any help would be great.
thanks
mark
757-288-6256