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  1. 21-05-2021 #2
    dazp1976's Avatar
    Lives in coventry, United Kingdom.
    dazp1976
    Last Activity: 14-01-2024 Has been a member for 6-7 years. Has a total post count of 424. Received thanks 31 times, giving thanks to others 1 times.
    Quote Originally Posted by Soyb View Post
    Hi I am building a small gantry hobby router using 2 Y, 1 X and 1 Z closed loopback steppers,
    Closed Loop Stepper Driver 0-7.0A 24-50VDC for Nema 23 Stepper Motor
    Motor Specification
    Part Number: 23HE30-5004D-E1000
    Number of phase: 2
    Holding Torque: 2.0 Nm(283.28oz.in)
    Rated Current/phase: 5.0 A
    Phase Resistance: 0.42 ohms± 10%
    my calculations for the required power supply(s) is
    4 motors x 5 amps each x 50 volts x 120% = 1200 watts
    since not all the steppers will be running at full power at the same time I can reduce the requirement by 25% = 900 watts required
    Are my calculations valid?
    What is better, two switching power supplies, 450 watts or one 1000 watt?
    https://www.ebay.co.uk/itm/402646721...r=672923118722
    Any suggestions gratefully accepted
    Thanks
    I would go no less than 48v.
    48V 800w will do it easily.

    Generic 4 axis kits normally come with 2x 36V 350w supplies so the supply I suggest above is plenty :)
    (36v is usually dissapointing).
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