Home Forums General Discussion Technical Questions Kone Mono Space with V3F25 Drive

I'd yank the drive, check for shorted SCRs, miscelaneous burnt stuff and broken crap. Disconnect the motor from the drive, check all three legs to each other, and each to ground. Should be meg ohms, or high K ohms. We had a motor get water damaged, and all three legs read 1 ohm to each other, and 1 ohm to ground. Yet the drive acted like a safety valve, and allowed the motor to turn. The short was after some coils, I take it, so the drive was still able to generate some magnetic force in the windings, and the motor turned under power, even though it was shorted. Although the VF25 just kept shutting off and turning on, on current limit, so the motor had these violent pulses, as the torque would come and go. Car rode like a jackhammer, with rapid cyclic vertical oscillations. Funny how that drive can turn a shorted motor like that. But I digress. Anyway, check the motor out.

Did you ohm out the braking resistor?

BTW, (unrelated to your drive meltdown), if you got an earlier ADON board, you will get a lot of spontaneous bs faults. Gotta stick in the ADON II, it takes care of a lot of problems. ($800 core return on the ADON 1, so don't trash it)

Do you have slide guides? Keep 'em well oiled....The way I hear it, the PMSM motor is marginally sized on some jobs, and a new motor (MX20) is $40,000 from Kone Spares.