Powermax 45xp lost arc delay (Solved)

little_sparky wrote: I had very similar issues you are having on my everlast 50s plasma cutter while using a solid state relay before my mechanical relay arrived, I then changed to the mechanical relay and it fixed the problem on startup,

Glad to hear this fixed things! I may have missed where you had said that.

snowgoer540 wrote:

little_sparky wrote: I had very similar issues you are having on my everlast 50s plasma cutter while using a solid state relay before my mechanical relay arrived, I then changed to the mechanical relay and it fixed the problem on startup,

Glad to hear this fixed things! I may have missed where you had said that.

I recall both of you having this issue a while back, hence my suggestion to try with a normal relay.
I do have some ideas as to why an SSR might fail in this case, but not sure so i'll skip it.

tommylight wrote: I do have some ideas as to why an SSR might fail in this case, but not sure so i'll skip it.

I'd be curious to hear, I like learning new things!

Not sure part was:
-i have no clue how well SSR handle spikes, there are plenty of them created at every torch start,
-i have no clue how well SSR handle magnetic fields, there are plenty of them created at every torch start,
-the input side (control side) of an SSR is very sensitive and requires little current to work, might be that any of the above is enough to get that SSR above or below the rated value, or cause it to temporarily close the output.

Just a stab in the dark, but did anyone try to add a diode to the output of the SSR ?

tommylight wrote: Just a stab in the dark, but did anyone try to add a diode to the output of the SSR ?

I didn't, but I guess I could... the normal relay solved the issue and I went on my merry way to be honest. I reread the manual and was like "yep, I'm a dummy, should have just used normal relay from the start".