Arc OK intermitent issues on torch fire

So it doesn't get the signal from the plasma machine.

It may be a faulty relay or connection in the machine itself or it may need some contact wetting.

phillc54 wrote: So it doesn't get the signal from the plasma machine.

It may be a faulty relay or connection in the machine itself or it may need some contact wetting.

I am thinking the machine also. would this be counted as contact wetting on the arkOK line in this diagram?

That will give you around 24mA which would "probably" be adequate.

phillc54 wrote: That will give you around 24mA which would "probably" be adequate.

with only around 8hours cut time i wouldn't think i would have oxidization build up on this connection. i can only think bad relay internally.

Lots of variable in play, humidity etc.

Is that previous schematic how you are currently connected.

phillc54 wrote: Lots of variable in play, humidity etc.

Is that previous schematic how you are currently connected.

That is my exact wiring right now. (also in Victoria so pretty stable )