Control box rebuild

[john swift]

from your photo



its not clear what is connected to earth
I suspect from the little I can see
its just the metal enclosure and the screen on the cable connecting the stepper drivers to the chassis connectors to the motors

does the motion controller have an ethernet connection to your PC ?


John

[Palletlad]

yeah as its all in a wooden box the wires from the drivers to the motors are the only things earthed for the shielding.
If I ground everything would that help with the interference?

[Palletlad]

ok had done some reading and going to ground my components tonight and replace some wires with shielded wiring and see if that works as I've just read a few threads in regards to this issue and it all boiled down to shielding and earthing component's.

[john swift]

that will explain the problems

I can not see an earth connection to the VFD

John

[Palletlad]

Just a thought, I've got enough shielded cable for replacing the external leads to the motors from the 4 pin plugs via the control box, how do I ground this part of the cable or is it shielded via the internal wires that connect the drivers to the 4 pin plugs as I grounded them? do I attach it to part of the cnc frame?

[john swift]

with 4 pin connectors you would have to connect the earth / screen to the shell of the 4 pin chassis plug

and then the cable screen to the shell of the 4 way inline socket

John