Hi
I have a fanuc ac spindle A06B-6044-H009
What is going on is the spindle will run at its slowest speed when I try to turn up the speed it trip out causing alarm #2 and when it runs slow it is not smooth it jerks and bangs.
So what I have done is checked all transistor modules and don't see andthing shorted out. I don't have any blown fuses. I used a scope and checked the speed feedback signal looks okay.I used a insulation tester on my Motor that looks fine. I have replaced the board on the front of the drive Can anyone help me it this Problem??
Thank you