Control box rebuild

**Palletlad** · 21-05-2018

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** · 21-05-2018

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** · 21-05-2018

that will explain the problems

I can not see an earth connection to the VFD

John

**Palletlad** · 21-05-2018

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** · 21-05-2018

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