x-y motion stops for no reason - plasma

[cnc mad]

Hi , I have random x-y motion stops on the last portion of lead out.I have to press the stop and then start button to resume the job.When it stops in the x-y motion , the torch fire LED is still lit( plasma torch is off ) .When the stop button is pressed again , LED goes off ( torch relay clicks off ).

My signal from the THC arc on , is from a promo THC.I run the file with and without sheetcam path rules and it seems to be the same problem.


Any help will be much appreciated.

[beefy]

From what you are saying, the problem appears to be with the plasma cutter itself.

If the Torch On relay never goes off, yet the flame extinguishes, that's the plasma cutter.

If your smart phone has a slow motion video mode, try using a weld mask lens to do a close up recording. My Samsung (older S5) can record at 1/8 speed and it's helped me diagnose all sorts. Perhaps the torch is extinguishing when it crosses the already cut kerf just before the leadout. Could the torch be diving down as it crosses that kerf and is that causing the extinguishing.

Keith