if you want reliability with this machine you will hook it up using the raw voltage installation.
Only use the CPC port for the trigger (fire) circuit.
PrimeWeld Raw Voltage Cable Installation.pdf (2.3 MB).
Check out this step by step guide.
The pigtails from this installation will hook to the “clamp” with the red lead and to “torch” with the black lead.
Then from the “PV OUTPUT” connection on the VIM ( voltage input module ) to the Langmuir electronics enclosure.