Hi,
    I am new here and just finished my CNC router. This is working fine. However I have a question.
I have 4 Gecko G203V mounted on Alu plate, which is connected to 70 V power supply capacitor ground (neutral). Alu plate is mounted on control box enclosure, which is also connected to Mains Earth. This Earth is also connected to machine.
The BOB (C11G) is isolated in enclosure and only connected to PC trough parallel cable. The Earth of power supply of PC is also connected to mains Earth. All stepper power cables are sheilded and shielding tied up at one end on Alu plate and signal cable shieldings tied at BOB end only.

My question is can I place computer mainboard, Hard disk and SMPS in control box enclosure. Is there any grounding issue?
The enclosure is large enough to accomodate all these and a screen between MB and other items may also be provide.
I think I didn't made it complicated.
Thanks in advance.

I think you did it right.

I would also connect the shield of signal encoders to earth (alu plate)

OK what about my query?

->Is there any grounding issue?

I do not think so. You can use the same box if all metal is grounded (like a PC case).
Filipe

->Is there any grounding issue?

I do not think so. You can use the same box if all metal is grounded (like a PC case).
Filipe

Sorry, I meant:  "I think so"

THANKS

Both my mill and lathe have motherboards direct in the cabinet and no problems with them.

Hood