I am running my own plasma table with a Thermadyne Cut120 machine but are battling! The machine is a high frequency start machine. I placed the machine as far away as possible from the pc(about 5 meters). Earthed the table and the cabinet but still gets some interferance. At first it was only the keyboard that would get disabled, but if you plug it in and out it was fine. Today the machine started jerking while moving. Got that sorted by plugging the parallel port into the on-board port of the pc, but now the x-axis will move very slowley forward while it is supposed to be stationary. This only happens when the the torch are arcing.
Please someone help me!!!