Y-Axis snap back

X-Carve Troubleshooting
1

Whenever I home my machine at the end of the seq. the right side Y axis moves back but the left stay? what would cause this?

Thanks
Jeff

2

Does both move prior?
Something blocking further motion for the one on the left?

3

Seems like once the homing sew is complete the left side stays put but right side kicks back ? Nothing blocking either side.

4

I suspect your left side is not powered or wired incorrectly.

5

I would double check the Y axis rails for being square, and not simply parallel. Sounds to me like when the Y motors are applying torque, the Y axis is held square, but when the steppers release, the tension in the one side is released, causing it to kick back to a relaxed position in the stepper motor… It could also be a belt tension issue from one Y axis rail to the other.
You could have the Y axis as a parallelogram and not realize it.

6
  • Change GRBL parameter $1=255
  • Inside the Xcontroller, set all #4 switches on the red switch blocks to OFF.

Do the Y-stepper “kick back” now?

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