Hi,
I am tired of fighting my cnc router(working, but still in progress).
It is around 0.9x1.5m working area with chinese hiwin rails and 2020 ballscrews and 8.5nm closed loop steppers. Hbs86h drivers, 60v ac.
Problem is with longest dual motor axis. I can only move it up to less than 3m/min while being sure that drivers won't stop and throw an error. Components are more or less aligned, nothing binds and can easily be moved with hand.
While moving gantry at some points motors unpleasantly vibrate and sometimes starts shaking back and forth for 5 to 15 seconds, then shut off and stay with red light flashing. Other axis are moving nice and smooth with a satisfying speed.
At low speeds motor still tend to vibrate intermittently, however keeps operating.
It looks like motors are loosing or gaing some microsteps because of each others movement and trying to compensate them causing unpredictable failutes this way.
Did anyone had this problem before? If so, how did you solve it?
Is it possoble to use closed loop stepper as regalar stepper? To ignore the encoder's signals.