Well, started a topic on ‘losing the ARC’ a while back (Can't cut new drawings. Error: Torch starts moving before cutting voltage was sensed. UPDATE! - #7 by Joep).
In the end they sent me a new VIM box, but that didn’t solve the problem either. I kindda gave up for a while, but now I bought the hypertherm xp45 with cpc port and hoped this would be the end of my problems.
But again I get lots of ‘lost Arc’ failures during cuts. It’s driving me crazy, so I thought to start over from the beginning and start by going through the THC troubleshoot just to clear things out.
Sometimes it cuts really great, but I can rarely finish a piece without the ‘retry’ button and ‘cut from line…’. Most of the time it gives the ‘Lost arc’ notification check clamp, cut height or pierce height is to high or to close to other cuts. But the clamp is on the workpiece, cut and pierce height is correct (1.5 and 3.5 mm as written in the hypertherm manual).
So it seems that even with the new plasma cutter I am running against the same problem…