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IndustryArena Forum > CNC Electronics > Stepper Motors / Drives > Power supply max current rating
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  1. #1

    Join Date
    Jun 2020
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    9

    Power supply max current rating

    I can't figure out the max current rating for power supply when I use 4 stepper motors linked below.
    What would be max current rating for 1 motor?
    What would be the max current rating for 4 motors?

    https://robokits.co.in/automation-control-cnc/leadshine-motor-drive/hybrid-servo-motor-2-phase-85kg-cm-w-t-es-d1008-leadshine-drive?cPath=75_138&

    Thank you all.????

  2. #2
    Registered
    Join Date
    Aug 2005
    Posts
    896

    Re: Power supply max current rating

    The specification on that link says 4.2 amps per motor. 4 motors would be 16.8A
    Then multiply that by 2/3 = 11.2A total.

    A power supply like this should be ideal.

    https://www.homanndesigns.com/index....roducts_id=288

    Cheers

    Peter


    Sent from my iPhone using Tapatalk Pro
    -------------------------------------------------
    Homann Designs - http://www.homanndesigns.com/store

  3. #3

    Join Date
    Jun 2020
    Posts
    9

    Re: Power supply max current rating

    Thank you Peter. That's really great. Now I understand what to do. Thanks

  4. #4
    Registered
    Join Date
    Jan 2018
    Posts
    498

    Re: Power supply max current rating

    I'm not too convinced about running those nema 34 motors with as much as 4.4mh inductance on only a 48v supply. Want 60v at least.
    There's a reason the supplied drivers are capable of upto 100vdc.

    Look at AC toroidal supplies too (around 60Vac) as the drives can also take upto 70Vac direct.
    Or these type supplies can be rectified to supply DC.
    I've never done one (yet) but there is plenty of information on this out there.
    A quick example:
    https://electro-dan.co.uk/electronics/wiringtrans.aspx

    AT have pre built ones too. This is a 72Vdc:12A.
    https://www.automationtechnologiesin...5-w-duplicate/

  5. #5

    Join Date
    Jun 2020
    Posts
    9

    Re: Power supply max current rating

    @dazp1976
    I will look for some toroidal supplies. Thanks. The current rating I would be looking for would still be 11.2A right?

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