Well, from the description it sounds like the control head has an issue. The calibration simply applies voltage in both polarities and determines where the stops are. Under control the potentiometer tells the control head where the controller is and stops it at whatever percentage you selected. Without the feedback the control head does nothing. However, if the control head has a failure, it also won't move the motor and you get the same result.
To test the feedback side, you need a voltmeter. Go to the controller and unplug it. Set the meter to read volts and connect one probe to pin 7 (black wire) touch the other probe to pin 10 (gray wire) if the ground is good and the reference is there you should see 5-volts. If not move the probe on the black wire to a known ground. Do you have the 5-volt bias? If yes, then the next step would be to test the signal return. For that you need the control head out so you can get to pin G (light blue wire) in connector 1 and see if the position signal is there. If the 5 volts and ground tested good and the return signal, then it is the control head that is the problem. Repair or replacement are the options.
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Jan 30, 2023 at 4:02 AM
