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    Maximum current of the heater cartridge

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    Duet Hardware and wiring
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    • FoxLabundefined
      FoxLab
      last edited by

      Hi,
      I'm planning the setup of a hotend capable to deliver temperatures up to 500°C.
      Therefore I'm wondering what the maximum accepted current (amps) of the heater cartridges is when using a 24V power supply.

      Thank you

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      • dc42undefined
        dc42 administrators
        last edited by

        Which Duet?

        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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        • FoxLabundefined
          FoxLab
          last edited by

          Sorry, this should have been defined earlier.
          At the moment I have Duet 2 WiFi, Duet 2 Ethernet and Duet 2 Maestro in stock. Thus I can choose. Would be interesting to have an answer for each of these boards to understand my operating range.
          Thank you

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          • dc42undefined
            dc42 administrators
            last edited by dc42

            The heater outputs of all those boards should be good to at least 5A if you use properly crimped ferrules in the heater output terminal block. AFAIR the terminal blocks are rated 6A. The 2-pin Molex connectors on the Maestro should not be used above 2A.

            The VIN fuse on the Duet WiFi/Ethernet is rated 7.5A. You might need to increase it to 10A if you use a 5A heater, to allow extra current for the motors and fans.

            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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            • FoxLabundefined
              FoxLab
              last edited by

              Thank you for your fast answers again!

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