I have had it occasionally drop out and have had to restart from line in code. Thanks
Ensure that those issues are not a problem. USB shell and controller bushings. The control box can not be on the ground system. It could be a monitor or laptop charger or a bolt installed wrong. They must be separated at all costs. Start unplugging stuff to see if the 3.7 ohms disappears.
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If the torch is hunting up and down, you have electrical issues. I have the same setup, and have never used nominal voltage. I leave it on smart and it’s fine. All thicknesses.
At one point I had interference causing the torch to rise, and it was from having the laptop plugged in to a grounded outlet while cutting.
Check for readings in the live voltage box while the machine is idle. If you have voltage at idle, clean the z axis first and see if that fixes it.
Also curious, what was your live voltage when using smart voltage and getting good results?
What are your settings in sheetcam?
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Thanks, Ive just re-isolated the electronics enclosure and no longer getting a resistance reading. These things are really poorly designed.
My live voltages when using smart V were around 10-20V higher than the target. From memory, around 155V for a 135V target. I only used Nominal as an experiment but it did the hunting thing so I went back to smart V
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