Retrofit plasma and Hyperterm max 100 HF/HV problems??

Hi Guys.
Well the problem is i want to retrofit a plasma, current motors and electronics are not working correctly.
I will put NEMA 34 whit a 1:5 gearbox -> rack and pinion , only on X,Y axis, Z will be driven with a NEMA24 (using the existing lead screw)
Still not sure , open loop or closed loop steppers (more cabels more chances of EMI)
So all I/O <-> (HOME ,LIMIT , THC , USER BUTTON) will be optically isolated with a relay and additional optocoupler (machine <-> MEASA )
The current setup has an braded cable sleeve around the plasma cable in a drag chain besides all the other cables.
My question is what should i do about HF/HV arc start of the Hyperterm max 100?
I know grounding is imperative.  The CNC electronics box will well away from the plasma transformer.
Add an aditional ground rod?
Kind regards Marko



 
 

forum.linuxcnc.org/plasma-laser/38974-di...rything-in-one-place

forum.linuxcnc.org/plasma-laser/35349-cn...lding-info-and-guide

Tnx, i will read some more
Hope if i get something wrong i can ask

You are welcomed, always.

Here are some of my designs do you have any recomendations?I am planing to use 7i96,Kind regards

Because there are no cutting forces, there is no need for closed loop motors on a plasma machine. The only time I saw missed steps was when the motors overheated which is a result of motor voltage too high and/or velocity or accelleration is too high when deliberately pushing the limits...