Another Valid Arc Lost Post

rodw wrote: Just remember that if your plasma cutter decides the arc is lost, its going to cut the arc regardless of any synthesised arcOK signal. NOt using your ArcOK signal is just adding one more potential failure point.

Its possible any relay you've used on your ArcOK circuit could be responsible for most of the latency. I've wired mine direct to a Mesa Input.

You could compensate for latency in ArcOK by reducing pierce dealy.

The arc usually does not establish at all. There have even been times that it doesnt strike at all, just the solenoid actuates to shut the air off and valid arc fail. Which is why I was thinking it might be a timer.

I can wire it directly to an input easily. I basically have no terminals or relays left in the panel anyway. Just to be clear, it isnt wired right now.

I dont think I know more than Hypertherm. Just kinda wanted to try something to improve my issue is all. Maybe it was silly. Itll be easy enough to throw that in there.

Can you still fire the torch manually ?
If yes, fire it and check if you get that error, it seems you have grounding / shielding issues.

So I went ahead and wired up the arc ok but it is acting a little strange. The issue is 100% my fault. But I cant get the software to see my signal. I am wired to pin 30. When checking the hal meter it goes from false to positive when the torch fires. I added "net plasmac: arc-ok-in => hm2_7i76e.0.7i76.0.0.input-30 to my connections hal. The "plasmac: arc-ok-in" signal goes from false to true but I cant get the arc ok light to come on in the software. The mode has also been switched from 0 to 1. Kinda stumped on this one.

[strike]The "plasmac: arc-ok-in" signal should normally be false.
[/strike]
[strike]Seems like you might need to use the in-not to invert the signal[/strike]

EDIT: oops, I misread that.

Can you zip your config file and post it here.

phillc54 wrote: Can you zip your config file and post it here.

Here it is. You can see where I made notes in the connections hal so that it was clear what might be the problem when doing it. I am now getting arc ok to work. But it is still dropping out. My cut file (hello4) is attached as well. I am struggling when I get past the line with no offset. I've gotten the second circle to cut and that is it. It loses arc at the very end of the cut and then goes up to the top of the z travel and sits there with the error "valid arc lost program paused".

The cut file is just a random one to test some stuff that I use a lot in my work. Holes, lines and text and some round edges. Cut on my previous machine to check against this one.

Thank you for the help. I really appreciate how much you guys help everyone. I tried not to ask too much if possible.