My place of work has recently acquired a Hydraulic Press Break from the 80's. It has a CNC controlled back stop which is driven by a DC motor and Screw drive. The encoder which couples to the motor provides feedback for the control loop.
I have determined the Encoder is faulty as when i rotate it clockwise by one turn it increments by 5mm but when I rotate it anti-clockwise by 1 turn it increments by 10mm (approximately). It also feels quite clunky when i rotate it.
I would like to replace the encoder however I am not sure how to go about choosing an encoder.
What do pins B and C on the pin diagram represent? What do the numbers on the encoder represent? Would this encoder have a zero pulse?