Kirk Wallace <kwall...@...> writes: > > I have had a chance to play with my washing machine motor: > > http://www.wallacecompany.com/machine_shop/wash_motor/ > > I hooked up one of my VFD's to it, without much success. I kept getting > thermal alarms. The motor rotates as expected, but I think there is very > little back EMF, so the currents are fairly high. My VFD is rated for > 220 VAC output, the motor is rated for 110 VAC. At slow speeds, the > average output voltage is less than 50 Volts, so I felt the test was > safe enough, it just didn't work within the VFD's parameters. It's > beginning to look like I'll need to be a little more discriminating in > matching this motor to a driver. If someone has a driver that runs this > type of motor well, I would appreciate hearing about it. Another > interesting feature is that the label indicates a 16k RPM rating. It > will be interesting to figure out where this motor might be useful for > CNC. >
Hi Kirk, It sounds like you might have to reduce your motor max voltage setting in the vfd parameters, assuming the parameters in the vfd can be changed. I have been using a 220V Danfoss 6000 series vfd to spin my washing machine motor. I recall that I set the motor to ramp up starting at zero volts & zero Hz. The ramp time to achieve the motor nameplate ratings (190V & 240 Hz) was around 1 second. I will look at the motor parameters in the vfd today and report back. Tom ------------------------------------------------------------------------------ Stay on top of everything new and different, both inside and around Java (TM) technology - register by April 22, and save $200 on the JavaOne (SM) conference, June 2-5, 2009, San Francisco. 300 plus technical and hands-on sessions. Register today. Use priority code J9JMT32. http://p.sf.net/sfu/p _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
