probably need a little more info and it to be sent as a support ticket to Masso. unless somehow your settings have been corrupted (first make sure all your settings are still correct), possibly check to see if the masso is outputting the 0-10V that would normally go to your vfd (assuming you are using one) and the connections on your VFD are getting the power and signals that it needs, if not then start back tracking through your wiring looking for fuses that have blown. If it is getting the appropriate signals then check to see if the VFD has failed by setting up a manual control system for it (check for fuses, error lights etc). After you have eliminated any possible external reasons for your spindle not working, look at possibly swapping an opto-isolator from an un-used set of pins to the spindle control pins.
