Hot Stepper Motor Drivers



  • Hi Yesterday I finnished my delta printer assambly.When I testing sensorles homing I realized stepper motor drivers getting hot (5 minutess worked and it reached up to 55 degrees Celsius)
    is it normal ?
    I using Duet Wife and here is my stepper motors link:
    https://www.aliexpress.com/item/NEMA17-2-Phase-48mm-42-Hybrid-Stepper-Motor-0-9-Degree-4-8kg-cm-2-4A/32908397622.html?spm=a2g10.10010108.1000001.7.2cab185fwrrApU&isOrigTitle=true
    Step Angle: 0.9
    Current/Phase: 2.4A
    Resistance/Phase: 1.0 Ω
    Inductance/Phase: 1.8 mH
    Holding Torque: 4.8 kg.cm
    Here is my config

    ; Drives
    M569 P0 S1                                   ; Drive 0 goes forwards
    M569 P1 S1                                   ; Drive 1 goes forwards
    M569 P2 S1                                   ; Drive 2 goes forwards
    M569 P3 S1                                   ; Drive 3 goes forwards
    M350 X16 Y16 Z16 E16 I1                      ; Configure microstepping with interpolation
    M92 X80.00 Y80.00 Z80.00 E663.00             ; Set steps per mm
    M566 X1200.00 Y1200.00 Z1200.00 E1200.00     ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000.00 Y18000.00 Z18000.00 E1200.00  ; Set maximum speeds (mm/min)
    M201 X1000.00 Y1000.00 Z1000.00 E1000.00     ; Set accelerations (mm/s^2)
    M906 X1600.00 Y1600.00 Z1600.00 E1400.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30                                      ; Set idle timeout
    
    

  • administrators

    How did you measure the stepper driver temperature?

    55C is not especially hot for stepper driver chips. They produce an over-temperature warning at about 100C and shut down at about 130C.


 

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