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Warning High temperature on drivers... - WORKBEE Duet 2 WiFi

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Duet Hardware and wiring
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  • undefined
    stweet
    last edited by 17 Feb 2020, 12:44

    Have a workbee 750x750 with duet 2 wifi and default workbee fw & settings.

    After machine is on for 5-10 minutes i get a "DWC warning: High temperature on drivers..." and it feels like the step motors start to get fairly hot..

    why do they get to hot so fast ?

    undefined 1 Reply Last reply 17 Feb 2020, 12:45 Reply Quote 0
    • undefined
      Veti @stweet
      last edited by 17 Feb 2020, 12:45

      what current are you running them at?

      1 Reply Last reply Reply Quote 0
      • undefined
        aidar
        last edited by 17 Feb 2020, 12:51

        Workbee default setting is 2400mA. Maybe its too much for your motors?

        undefined 1 Reply Last reply 17 Feb 2020, 13:13 Reply Quote 0
        • undefined
          stweet
          last edited by stweet 17 Feb 2020, 12:52

          @Veti @aidar
          M906 X2400 Y2400 Z2400 I100 ;
          motors: 2303HS280AW ( should be able to run 2.8a)

          ? 1 Reply Last reply 17 Feb 2020, 13:10 Reply Quote 0
          • undefined
            aidar
            last edited by 17 Feb 2020, 12:59

            Duet Wifi-s drivers itself are rated to maximum 2.4A, so to get max out of it you should use very good cooling for drivers i guess.

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            • ?
              A Former User @stweet
              last edited by 17 Feb 2020, 13:10

              @stweet said in Warning High temperature on drivers... - WORKBEE Duet 2 WiFi:

              motors: 2303HS280AW ( should be able to run 2.8a)

              and theyre rated for at temperature increase of 80C and up to 50C ambient i.e. they'll get hot, real hot. its normal.

              do you need to run such a high current?

              1 Reply Last reply Reply Quote 0
              • undefined
                Veti @aidar
                last edited by 17 Feb 2020, 13:13

                @aidar
                if you run the stepper drivers at 2400ma you will need to actively cool them.
                a can that blows across the underside of the board should do it.

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                • undefined
                  stweet
                  last edited by 17 Feb 2020, 13:25

                  @Veti @bearer year it sounds like i need better cooling on the pcb

                  1 Reply Last reply Reply Quote 0
                  • ?
                    A Former User
                    last edited by 17 Feb 2020, 13:33

                    cooling the board won't affect the motor temperature just if that was unclear.

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                    • undefined
                      stweet
                      last edited by 17 Feb 2020, 13:37

                      @bearer yea i know but i set it to 1.8A motors are ok cool, but i felt drivers with my finger and they are pretty hot

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        Phaedrux Moderator
                        last edited by 17 Feb 2020, 17:26

                        https://duet3d.dozuki.com/Wiki/Mounting_and_cooling_the_board

                        Z-Bot CoreXY Build | Thingiverse Profile

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