Navigation

    Duet3D Logo

    Duet3D

    • Register
    • Login
    • Search
    • Categories
    • Tags
    • Documentation
    • Order

    Did I just fry my fan circuit - plugged 24V fan into the 5V always on

    Duet Hardware and wiring
    3
    6
    750
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • Notepad
      Notepad last edited by

      Its sorry to say, but I have a problem with my fans. I plugged my two E3D 24V fans into the always on 5V fan section (Like a fool).

      After I turned it on and realised the mistake, I turned off and switched them to the PWM fan section but I cant get them to spin up. Unless the red wire on thoes fans arnt V+ then I think I might have blown the circuit.

      –-
      while im on the topic of blow circuits. My mate plugged a thermistor into his 5V Always on. Since I might be having to repair my board, would I need to repair his while im at it?

      1 Reply Last reply Reply Quote 0
      • Dougal1957
        Dougal1957 last edited by

        What position is your Fan Vin jumper in as there are no dedicated 5V Fan headers they all run at the same Voltage which is set by that jumper

        1 Reply Last reply Reply Quote 0
        • dc42
          dc42 administrators last edited by

          Plugging a 24V fan the right way round into a fan output that is set for 5V won't damage it. Plugging a 24V fan the wrong way round (i.e. red and black wires swapped) into a fan output may damage the fan, the fan driver mosfet, or both irrespective of whether the voltage was 5V or 24V.

          Plugging a 100K thermistor into a 5V or even 24V output is unlikely to damage it.

          1 Reply Last reply Reply Quote 0
          • Notepad
            Notepad last edited by

            Plugging a 100K thermistor into a 5V or even 24V output is unlikely to damage it.

            Thats good to hear, he was getting worried.

            Plugging a 24V fan the right way round into a fan output that is set for 5V won't damage it

            Thats also good to hear.

            What position is your Fan Vin jumper in

            It should be the same as when I got it as I havent changed any jumpers on the board other than the z steppers.

            –

            I think its time to see if I got the polarities right. can never be too sure when it comes to me 😕

            1 Reply Last reply Reply Quote 0
            • Notepad
              Notepad last edited by

              WELL, this is embarrising. When I went to check the cables for the fans, the polarities was correct. It only occured to me after putting them down that….they should probably be plugged in -_-

              I do appologise for wasting peoples time.

              1 Reply Last reply Reply Quote 0
              • Dougal1957
                Dougal1957 last edited by

                I did just have to have a chuckle at that most people wouldn't have admitted to it lol

                1 Reply Last reply Reply Quote 0
                • First post
                  Last post
                Unless otherwise noted, all forum content is licensed under CC-BY-SA