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    Hot Stepper Motor Drivers

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    • Mekalaundefined
      Mekala
      last edited by

      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
      
      
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      • dc42undefined
        dc42 administrators
        last edited by

        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.

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

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