On Fri, 22 Mar 2019 at 16:04, Jon Elson <el...@pico-systems.com> wrote:
> .01 degrees is 36,000 counts/rev. Large diameter encoders > (maybe with interpolation) can do more, but maybe that is > the raw resolution of the encoder without the interpolation. The encoder is described as a "Resolver" in the drive manual, but is an odd one with 4 wires, ABC and common. The manual gives the resolution as 614,400 cpr, but as the sensor is very multi-pole and analogue I think that is a drive limitation. Repeatability is given as +/-2 seconds, which matches the CPR quoted. > I do see that there are 18 wound poles on rotor, and same on > stator. So, that could possibly suggest a 3-phase arrangement. The input is certainly three phase. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
