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Need help for power supply voltage

Discussion in 'CNC Mills/Routers' started by Tanwa, Nov 14, 2021.

  1. Tanwa

    Tanwa New
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    Hello

    I building my second CNC machine which brought some part from my first machine including the 24V power supply.

    The thing is, my new machine gonna equipped with NEMA34 stepper which I have seen some suggestions to use at least 48V for this stepper size.

    Is it gonna cause a problem to use 24V supply for NEMA34 stepper motor?

    Thank you for every suggestion.
    Tanwa
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    That depends on what controller/stepper drivers you are using.

    BlackBox for examples is 24v.
     
  3. Tanwa

    Tanwa New
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    Thank you for your reply

    My stepper driver are Chinese one, they can attend maximum 48V. Seem to be no problem with the driver. Thought

    I just curious that 24V power is sufficient to drive Nema34 motor to the workable conditions or not?
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Specific make / model no would help

    Depends on motor specs: inductance, resistance, current etc. Again, providing actual details will allow us to answer you.
     
  5. Tanwa

    Tanwa New
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    Oh.. sorry
    they are NEMA34 motor
    2 phase
    5A current
    Resistance 0.31 ohm per phase
    Inductance 2.7 mH per phase

    the drivers are
    TB6600 (HY-DIV268N-5A) Stepper Motor Driver Peak 5A, 12-48 VDC 2-phase
     
  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    That's 1.5v coils - 24V is sufficient overhead for most good drivers to do their job on these.

    Not so good though
     
  7. Tanwa

    Tanwa New
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    What is the point of TB6600? Haha
    Could you explain more why it is not good? Can it be used with this motor?
     
  8. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    It's budget level, not as good as say a DQ542ma. Use google to learn more
     
  9. Tanwa

    Tanwa New
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    I see..
    Thank you very much. You help me a lot.
     

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