Re: dc spindle motor control.

I guess what I am wanting to know is; 1)what is the best way to
control the speed of this motor? 2)How was it controlled by dsp 83.
There are filters, and of course pwm which will get the results
needed. With the technology today a reostat is very much not energy
efficient. I just wanted to know how this was controlled.
ty Jeff
--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...>
wrote:

> jeff35m_73068 wrote:
>
> >The third wire I refer to is directly off the brush wiring, and

must

> >be from about the center of that circut. There must be a way to
> >control this motor, It is a factory fanuc spindle motor. Would
> >decrasing the field current still increase the motor speed?
> >
> >
> Yes, it should. But, you will likely need a 20 A, 1 V power supply
> for the field. That will be hard to find.
>
> Jon