Duet 6 HC and 3HC Board Not able to Integrate with WELDER

[SANJR]

Hi Everyone,

I have built a Custom CNC using 6HC mainboard and a 3HC Expansion board. Integrated with a welding machine controlling through a 5V normal relay. During the tryouts without the weld machine ON is good i.e., that is the torch movement.

However when tried integrating the WELDER with the CNC the X and Y Axis doesnt move only the welder switches ON.

And observed that the X and Y Axis stepper motors are able to rotate by hand. I am suspecting some kind EMF Interference.

Requesting the help of Forum members on understading and solve this issue

[dc42]

@SANJR please supply a link to the technical data for the welder and explain how you have connected it to the Duet.