I am working on speed control of dc motor. I am using dc motor and an encoder. I couldn't find datasheet about the product. The motor I am using is an old one which was already available in lab. The specs of motor written on it is dc motor with encoder GM14902D347 30.3VDC 19.7 1 Ratio 500cpr. Can somebody please help me about pin configuration of encoder of this motor.
I can't even see the pins from here, let alone see what they are connected to.
Did you not try a Google search for the part number?
https://www.artisantg.com/PLC/81123-1/Ametek-Pittman-GM14902D347-Motor
The gearbox is on the top. The motor is in the middle (should have two wires for the 30.3V supply). The encoder is on the bottom.
The connector has 9 pins, of which 6 are used. I think the Purple and Grey wires are power to the motor. I can see Red, Blue, Yellow, and possibly Black wires going to the encoder. My first guess would be Red=+5V, Black = GND, Blue and Yellow are the quadrature signals.
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Thanks for response. the four wires coming out of encoder are white, yellow, red and blue. the one encoder I have doesn't have black wire.
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