Quote Originally Posted by Rye View Post
Not sure if this is the same issue, but on my 6040, if earth cable isn't attached to the frame, the axis will go haywire during a job. Could it be a similar problem?

Thanks for the reply, I did already try that. It has worked fine for a year or so as it is and it has me a bit stumped now.

A couple of more things...


  • Hooking the bench supply up to the spindle and running it at 30v does not cause any movement.
  • Swapping the motor pins in MACH3, still always moves the Y axis.
  • Replaced the connector on the Y axis stepper driver.


I would have thought if it were a wiring issue, the axis that is moving would change when I change settings/connections. why is it always the Y axis???

The spindle and speed controller look exactly like this. I did notice that part of the case is broken around one of the brushes, maybe that is causing excess noise?

Regards,

Les