I have recently replaced the THC on my CNC plasma table. The machine Chinese and uses the Start Shapon SH-2012AH controller. I purchased the table without the plasma operational and the original SH-HC30 THC had a damaged plug and is now obsolete, hence the upgraded HC31.

So, I have wired in the new THC and it does not function correctly. It will cut, but will not automatically adjust its height and is not showing the 'auto' light illuminated. I don't think I am getting the manual/auto signal correct from the controller.

Does anyone have experience with this setup?