> >>> I also have Yaskawa drives and motors but planned to replace drive. > >>> Encoder is three quadrature signal which is a little bit odd, third > >>> usually is zero. I have no time read are comment anything for a day or > >>> two. > >>> > >>> > >> I think the scheme (I had some of the old Yaskawa ServPack > >> drives and motors once) is the C channel looks like A and B, > >> but the phase relationship between them tells what > >> electrical quadrant you are in. So, immediately on > >> power-up, the drive knows which coils to drive to move the > >> motor. > > They are BLDC motors? > > > > > Yes, all the Yaskawa ServoPack motors are 3-phase permanent > magnet motors with integral encoders. > I hate the term BLDC, as they are not DC motors. But, some > people call them that.
I ran them with like PMSM sinusiodal voltages instead of trapezoidal BLDC and they seemed to work quite well. I better take a close look at the voltage waveforms. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
