Correct me if I’m wrong; the only motors that lock the rotor by applying current are steppers. All other motors produce torque when current is applied.
With a sufficiently high PWM frequency, you can apply a 50% PWM voltage as you describe, but due to the induction, there will be near-zero current, and near-zero torque. The motor will free-wheel. > On Oct 18, 2020, at 12:07 PM, John Dammeyer <jo...@autoartisans.com> wrote: > > t's still a 20kHz PWM which is a period of 50uS. So CW for 2.5uS, OFF for > 22.5uS, CCW for 2.5uS, OFF for 22.5uS. The current limiting feature still > comes into effect if the current increases past the example 3A but the > overall average current for the entire 50uS period has dropped to 10%. Now > the motor doesn't heat up as much but is still locked. _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
