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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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VFD problems ?
Hello All,
I have just aquired a new to me Enco 13" lathe. The lathe itself runs very well. But my VFD is giving me fits. About every third or fourth time I turn the lathe on, I get a OC-C fault on my 3hp TECO 100FM VFD. The lathe has a 3hp 3phase motor. The OC-C fault is supposed to indicate "Overcurrent during constant speed". The causes indicated in the manual are 1. Load changes excessively, or 2. Input voltage fluctuates excessively. The actions are 1. Check load condition 2. install a reactor between power supply and inverter. The fault will occur on start up with just the 3 jaw chuck as a load. It has never occured, once the lathe has reached running speed. I have increased and decreased the start up time, with no effect on the problem. The load should be pretty constant. I am not sure what a "reactor" is. Do any of you electronics wizards have an idea of what the problem might be? TIA Jake in Escondido |
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