Re: [CAD_CAM_EDM_DRO] DC feedback motor

cadcamcenter@... wrote:

> Hi,
>
> Is a DC feedback motor with 5 plus 2 wires the same as a servo motor?
>
> The 2 wires is for the quadrature rotary encoder?

Hard to say. If it has brush caps in two different places on the motor
(like at each end) then it is a DC motor with a DC tachometer. It could
have a 4-wire DC brush motor. It is fairly common for 4-pole DC
brush motors to have separate wires brought out for each motor brush.
5 wires could be a 4-wire motor with a safety ground, and 2 more for
the DC tach.

On the other hand, it could be 5 wires for the encoder, and 2 for the
DC motor, and no tach. 5 encoder wires would most likely be :
ground, DC power, quadrature signals A and B, and index.

Most likely, if it has either a tach or an encoder, it is a servo motor of
some class. But, 'DC Feedback motor' is a pretty vague term. Is the MOTOR
DC, or is the Feedback DC? Not clear.

Jon