I have a PMDC motor I’ve scavenged along with the MC-2100 motor control from a treadmill rated for 1.5 hp @ 90 volts. I’ve been testing it with LinuxCNC v2.7.15 in a mock-up environment I built for testing. I’m able to control the spindle speed via PWM pulses to the controller (HD2 pin 4). M3 S500 will get me somewhere between 520 and 580 rpm. You can hear the motor whine fluctuating with the RPM. I’ve also installed a CUI ATM 10 encoder on the back and seem to have it working with both an index and phase A signal. I have the jumpers on it set to 200 PPR but it can go all the way to 2048. I’m using a cheap china 5 axis BOB connected via parallel cable.
Does anybody have any idea why I’m get so much flux on the rpm? Surely this isn’t normal? I know enough about the HAL to be dangerous. Is there some things I can check to smooth this out? Thanks. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
