Sorry to revive an ancient thread but I would really like to get some understanding of what you posted previously about cable shielding. I am in the middle of grounding/shielding my CNC. I have just grounded the entire CNC chassis to earth ground via the case of the controller box. I am about to replace all of my unshielded stepper motor cables with shielded cables and I was planning to terminate all of the shield drains to the controller case as well but you are saying not to do this and I don’t understand why. If I understand correctly, you’re saying to connect all of the shield drains to the ground of the power supply inside the controller box. The power supply inside the box has what appears to be a floating or isolated ground but it is not easily accessible from outside the box. The terminals marked “G” for ground don’t have continuity to the chassis of the power supply. I should therefore find a way to connect the 4 stepper motor shield drains to this ground instead of chassis/earth ground? Can you explain why this is and why is connecting the shield drains to earth ground bad? Thanks
(Edit) I just found a very similar post where a user grounded his cable shields to the chassis of the X-Controller. Just to make sure I understand this correctly, you’re saying that what he did here is incorrect?
Thanks again