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General Mach Discussion / X axis driving down without command
« on: November 24, 2008, 10:12:18 AM »
I am running a plasma setup with THC-300. Had the system working perfectly for several months then problems. When the torch moves to the first cut, it senses the plate surface, and begins the cut. As the unit is cutting, the z axis is driving down. If the THC is ON, it tries to counter the effect but by the second or third cut, the z has gone 6" and bottomed out. It does this regardless if the THC being on of off. It appears as though the z axis is loosing track of its zero position. I can zero it at the start of a cut and by the time it had made 2-3 cuts, the z reading is out as far a 1.5".
Any thoughts ?
Any thoughts ?