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  1. #1
    Join Date
    Mar 2006
    Posts
    7

    Chinese Mini Mill

    I picked a Chinese mini mill. But controller is shot. so i got a Gecko G540. I need help with the stepper motors.

    3 are Vexta DC 2.4 amp numbers on the lable are.
    103H7124-1142
    C299 581

    Z stepper motor is a Vexta
    3.1V 1.55amp
    C8513-9012K
    0441

    All are 4 wire.

    I called Vexta and they said those are com numbers.

    Any help on how I can tell whitch are the A and A- and B and B-?

  2. #2
    Join Date
    Jan 2005
    Posts
    398
    Do you own a multi meter and can you measure resistance?
    Connect up one lead of the meter one wire. Find the other one that has a low resistance. That's one coil. Check that the other two they are the other coil.

    You now have identified the two coils. One is A the other is B.
    Now hook them up to the A and B terminal.
    Jog it. If the direction is wrong reverse one pair of coil wires. Direction should change.

    Take note of this on the other 2 motors.

    Repeat on the other small motor.
    Set current using resistor as noted in manual.

    Dave

  3. #3
    Join Date
    Mar 2006
    Posts
    7

    THANKS!

    Thanks Dave!:wave:

  4. #4
    Join Date
    Mar 2006
    Posts
    7

    Up Date my Chinese Mill

    I am adding a G540 to my Mill. I have a CNC4Pc C11-BoB. I need to add a touch and tool probe also a C16–photo limit & home board. Any though on this?

    Thanks
    Bob

  5. #5
    Join Date
    Sep 2007
    Posts
    10
    How did the Gecko work out for you?

    I've got a machine with the same motors and seriously considering just getting the G540 and hope for smoother sailing!

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