Eric Keller wrote: > This is interesting, I have some brushless grinder spindles that have > 4 wires. I was trying to figure out what configuration they were, but > after seeing this topic and asking brother Google, I find that 2 phase > is a common thing for these types of motors. The only thing weird > about my motors is that all 4 wires seem to have continuity to each > other and there is no obvious differences in resistance between them. > Ohhh, that is a complication to running them on some drives. If this is a water-cooled motor, there is a fair chance the water lines got clogged up and the windings burnt out. You might do a continuity check to the case.
I have a Precise spindle, 2-phase 90 degree windings. I actually ran it on a Gecko 201 stepper drive, and it got up to a fairly high speed. That proved the motor was good, and that I knew the way the motor worked. I've been planning on making a drive for it, but never have gotten around to actually putting it together. I wrote some FPGA code to do it, but today I might end up using a BeagleBone's PWM generators. I could use two of my DC PWM servo amps to drive the windings. Jon ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
