AC Servo Driver problems cause sizes unstable
1- The signals lost causes the driver lost steps.
Solution: Can be checked by reading the pulse number on the AC servo driver, or use the Dialgage to check if there is any signal lost.
2- AC servo driver buffering parameters are not proper.
Solution: Adjust the buffering parameters.
3- The feedback cables of AC servo motors are broken, or the socket, jack are wet which causes the signal lost.
Solution: Change the feedback cables of the AC servo motors, and improve the protection.