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Assisstance with electrical diagram

  1. Aug 12, 2011 #1
    Hello all, I recently began a small project and ran into some trouble with the electrical components.

    I purchased a small 12v reversible DC motor that came with a potentiometer/PWM controller and a 12v power supply. The motor is capable of running in either clockwise or counter clockwise direction depending on how the motor is wired.

    My problem comes in when I attempt to insert a DPDT toggle switch to allow for ease of changing direction without having to swap wires. I connected everything, leaving out the switch for now and it all worked as it should, so I know the equipment is not faulty. Here is a diagram of what components I have and what wires are present.

    http://img828.imageshack.us/img828/6310/diagramb.jpg [Broken]

    The manufacturer informed me that the switch needs to go on the controller side, not power. Per shipping directions - To run the motor:
    In CW rotation, connect motor's green connector to controller's red connector and
    motor's red connector to controller's black connector.
    In CCW rotation, connect motor's green connector to controller's black connector and
    motor's red connector to controller's red connector.

    After some research, I learned to change polarity on a switch I needed to add a jumper from 1-6 and 3-4 (see above diagram), so I did that.

    From this point on I did quite a bit of reading before coming here and have tested as many circuit combinations as I can think of but I still cannot get it to work as I would like. Being able to change direction with the switch while still maintaining the ability to control the rate of rotation with the potentiometer.

    Any help with this would be greatly appreciated as I have run out of ideas and options. Please let me know if you need any additional information.

    Last edited by a moderator: May 5, 2017
  2. jcsd
  3. Aug 13, 2011 #2
    Good morning Robert, welcome to Physics Forums.

    You have the switch wired correctly, but the cross connections 1-6 and 3-4 must be with insulated wire.

    Connect the controller red to 3 and the controller black to 6

    Now connect the motor red to 2 and the motor green to 5

    If you have already fixed the location of the switch and want the switch positions the other way round then reverse the motor connections.

    I have not indicated the power supply to controller connections as you have not shown these fully and the manufacturer is correct, the switch goes between the controller and the motor.

    go well
  4. Aug 13, 2011 #3
    Thank you for the welcome and reply Studiot.

    Everything is soldered with insulated wire. I am unsure what else you need to know about the power supply. It is a very simple PS, with only a red and black wire output.

  5. Aug 13, 2011 #4
    This implies to me that you connect the controller to the power unit and the motor to the controller, with an optional switch between the controller and the motor?

    PowerUnit > Controller > Switch > Motor
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