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  1. #1
    Join Date
    Nov 2006
    Posts
    473

    Servo wiring question

    It is time to start to wire 1 servo to my electronics to test everything.

    I purchased 1125 oz dc motors from kelinginc. It is the first servo on this page.
    http://kelinginc.net/ServoMotors.html

    Keling states that the white wire is +++ the Black is common (-----) and the green is ground.

    When I looked through the granite devices manual this is what I found

    D--- Armature -
    C--- Armature +
    B--- Armature +
    A-- used by optional resistor

    I have already soldered the small board to the DB connector, so do I just use D,C, and the FG ?



    Thanks for the help


    Steve

  2. #2
    Join Date
    Nov 2006
    Posts
    473
    Anyone?????



    Steve

  3. #3
    Join Date
    Dec 2003
    Posts
    24221
    I have not used either product, but if you are hooking up a DC motor to the Granite, which I gather is a DC, BLDC & AC drive, A brushed DC motor is traditionally hooked up to the U & V of the normal U,V,W outputs.
    I would expect any manual should explain the different configurations.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.

  4. #4
    Join Date
    Jan 2006
    Posts
    2985
    I think you can run a DC motor in one of two modes, but its been a while since I looked at the manual and I don't own one. Pretty sure it is all spelled out in the manual, have you read it?

    Matt

    Edit: Directly from the manual,

    "Note: in DC motor mode B & C must we wired in parallel.
    In parallel DC mode C & B and A & D must we wired in parallel."

  5. #5
    Join Date
    Nov 2006
    Posts
    473
    keebler303-

    When I got home tonight, I started going through the manual again. When I got to the chart where I found the information in my first post, there it was a small footnote below the chart. This footnoote was the information that you listed. I am not sure how I missed it.

    What are the benefits of wiring the motor in either DC mode or DC parallel mode, or does it matter?

    I am planning on adding the resistor to help with the dynamic breaking.



    Al_the_man-


    There is a chart in the manual that listed the motor types (DC, BLDC & AC drive) and in a footnote below the chart, there were additional lines of information.



    Thanks for all the help


    Steve

  6. #6
    Join Date
    Jul 2007
    Posts
    887
    Hi,
    In DC Parallel mode the drive can supply more current to motor, see page 32 in the manual. Note though that if you use the parallel DC mode of the drive you can't use the regenerative break resistor.

  7. #7
    Join Date
    Sep 2004
    Posts
    1207
    In both brush DC modes C and B must be wired parallel, this reduces drive heat dissipation. Drive will detect if outputs are not parallel and will blink some error indicator leds.

    There are jump wire places in the tiny D-sub adapter PCB.

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