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Thread: G540 and unbranded steppers

  1. #13
    Gold Member john-100's Avatar
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    Default Re: G540 and unbranded steppers

    a good question
    reversing 1 pair of wires to 1 coil will reverse the direction of the motor

    but why they did not reverse the motor in Mach3 I do not know
    ( although it makes the default mach 3 direction setting correct for all axis )

    John



  2. #14
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    Default Re: G540 and unbranded steppers

    Very good... I get it now.

    So - A little more research on the TX14207 driver. It has two LED's right next to the signal input pins. Red and Green. With regard to the TB6560 issues where you need to apply the +5v first and let the power stabilize before applying +30v (+/-) power for/to the Steppers; I've noticed that the RED LED only illuminates on power up of the control box. They stay red (on all four driver boards) until I send a movement command to any 'one' stepper motor - then they all 4 go green. I'm going to test and see if this particular driver card is preventing power to the steppers on startup (red LED), as Toshiba intended, to prevent "letting the magic smoke out of the TB6560 chip" issue... I'll let you (all) know what I find out.

    If this is the case, I have a little more confidence in the TX14207 board. And - The seller has agreed to send me a replacement board as well...

    Thanks again for taking the time to assist me... Your help has been invaluable... I just hope I can contribute some day!!!



  3. #15
    Gold Member john-100's Avatar
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    Default Re: G540 and unbranded steppers

    looking at the TB6560 data sheet the maximum motor supply is 34V
    some kits use a 24V supply that limits the maximum speed you can step but helps the TB6560 survive
    others use a 36V supply that contributes to the TB6560's bad reputation

    the TX14207 board has 4 LED's
    2 green LED's :-
    5V power on
    & direction

    2 red LED's :-
    one connected to the TB6560 protect pin output
    and a second connected to the 20 pin gate array logic IC ( not sure could be a fault indicator)



  4. #16
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    Default Re: G540 and unbranded steppers

    Quick update... So I tested and found that power is indeed still going to the steppers even tough the GREEN LED is not lit (RED Only)... So my theory didn't pan out. That said - My controller powers the Stepper Boards w/ 24v DC (not 30v plus)... So maybe my TB6560 may hold up... Time will tell...



  5. #17
    Gold Member john-100's Avatar
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    Default Re: G540 and unbranded steppers

    the switching 5V regulator used to power pin 20 of the TB6560AHQ on the TX14207 board

    G540 and unbranded steppers-tx14207-5v-regulator-jpg



  6. #18
    Community Moderator wendtmk's Avatar
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    Default Re: G540 and unbranded steppers

    Uh guys, this is the Gecko forum, not the Stepper Motors/Drive forum where the TB6560 drives are discussed.

    Mark



  7. #19
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    Default Re: G540 and unbranded steppers

    Sorry... A quick question turned into a bit of a conversation...



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G540 and unbranded steppers

G540 and unbranded steppers