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Just wanted to provide an update to acknowledge the suggestions many have provided

1. Made changes to the way the spindle was grounded as per advice.

This did not fix my issue, but did reduce...

You are right about the Spindle Power cable, not happy with how the amount o exposed conductors so will fix that.
I will also rewire the VFD incoming AC to use RT instead of ST.

The spindle cable...

Ok, seems I have something to learn re VFD, will look into it.

I have attached 2 photos to clarify.
Essentially I have a 240V latching circuit that includes a cirtcuit breaker, a relay and EMF...

Not sure that 20A is correct, 2200 watts @ 240V is 9A. The faceplate on the spindle states 11A Max to be supplied to the spindle by the VFD and its not like an old style starter motor for say a...

Hi mactec54,

Power Supply is 240v @ up to 15A. The nice thing about Australia is 240v as standard for general purpose power outlets.
Are you suggesting I remove the shielding, retain the twists...

Hi there looking for some help to troubleshoot what I think is an electrical noise/interference issue but maybe not.

I have a PrintNC router build using UCCNC, axbb-e and a huanyang 3kw VFD...