Does anyone know anything about these escape motors? What I need to know is about the encoder on the end of the motors.
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have two of these as shown in the picture links above. Is this encoder a simple open collector RPM indicator, such that the white (+) wire goes to a pullup resistor to Vcc, and the blue wire goes to common or ground? You then pick off the white wire for the pulses to count. At first I was thinking it might be a quadrature encoder, with the black wire as common and the white and blue wires as the A and B open collector outputs, but that wouldn't make any sense as you could not reverse the motor in that configuration. But maybe the motor case would be ground in a quadrator encoder configuration. Thanks Earl