On Monday 19 October 2020 17:22:35 grumpy--- via Emc-users wrote: > On Sun, 18 Oct 2020, John Dammeyer wrote: > > Way back in 2003 I started a project to control the surplus tread > > mill motors I had acquired. At that time I was still just casting > > parts for making my Gingery Lathe and thought about making my own DC > > Servo motor controller. > > > > http://www.autoartisans.com/MotorDrives/MOTOR1-5.JPG > > > > The first prototype had a bunch of problems and then regular paying > > work took over, I needed the bench space and never revived the > > project. http://www.autoartisans.com/MotorDrives/REVA0059.JPG > > > > The controller was the MC33030 > > > > http://www.autoartisans.com/MotorDrives/MC33030-D.pdf > > > > Knowing what I know now I'd never use this device but back then... > > i have a 1 hp treadmill motor i need a controller for > in view of you past experience what would you use now > If you can supply a big enough power supply, the Pico Systems pwm-servo amp is very hard to beat. I use 2 of them here. Both with power supplies of 120-130 volts capable of doing close to 20 amps continuous. That will make those 90 volt motors pull close to 2hp while pulling stumps like rigid tapping. Be sure and tell Jon you are going to use them for spindle drive and he will modify them for that sort of continuous duty.
I have mine set to current limit at around 17 amps, not quite double the motors nameplate amps. These motors are tough, neither has complained in years. > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
