low stepper motor current ??

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  • October 1, 2021 at 2:13 pm #21204
    thomascnc
    Participant

    Hello from Greece.
    I have the Hobbycnc 4axis pro and i realize that the maximum stepper motor current i can get is lower than 300 mv..
    I check the part list and the parts that are installed in the board and it looks ok
    I have a 36VDC 10amp power supply and a 305 oz-in steppers mottors.
    How can i get higher current output??
    Best ragards Thomas.

    October 14, 2021 at 9:40 pm #21273
    BrianV
    Keymaster

    Well, the board is able to deliver 3 amps into that stepper motor (and it gets those motors damn hot too!).

    Tip 1: Setting the motor current: Stepper Motor Current Calculator
    Tip 2: Checking voltages FAQ
    Tip 3: Is it a Rev 1 or Rev 2 board. It is possible the motor low current enable is somehow turned on. The mechanism is different between Rev 1 and Rev 2.
    PRO 1: Idle Current Reduction must be disabled PRO board only – install J4 on all the 8-pin headers when setting the voltage.
    PRO 2: Take a look at the Pin 1 enable signal. Did you jumper it? Is your system sending a ‘disable’ signal?

    Let me know some more detail.
    BrianV

    BrianV

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