Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    Issues powering up with DUEX5 connected to Duet2 crashing

    Scheduled Pinned Locked Moved Solved
    Duet Hardware and wiring
    5
    16
    607
    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.
    • Dougal1957undefined
      Dougal1957 @Dougal1957
      last edited by

      @dougal1957 A bit more info from Nuramori

      0_1567784865882_10a15dc2-c0f1-4218-8c28-0695d00df269-image.png

      Dougal1957undefined 1 Reply Last reply Reply Quote 0
      • Dougal1957undefined
        Dougal1957 @Dougal1957
        last edited by

        @dougal1957
        alt text

        alt text

        1 Reply Last reply Reply Quote 0
        • fcwiltundefined
          fcwilt
          last edited by

          Hi,

          Those power connections look rather thin - what gauge wire are you using?

          Frederick

          Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

          1 Reply Last reply Reply Quote 0
          • Dougal1957undefined
            Dougal1957
            last edited by

            there is no load on them at this stage

            deckingmanundefined fcwiltundefined 2 Replies Last reply Reply Quote 0
            • deckingmanundefined
              deckingman @Dougal1957
              last edited by

              @dougal1957 said in Issues powering up with DUEX5 connected to Duet2 crashing:

              there is no load on them at this stage

              Even so.....Have you seen this Doug? https://duet3d.dozuki.com/Wiki/Duex2_and_Duex5_Features

              Particularly, if you scroll down a bit you'll find quote........

              "Important! You must have a reliable low-resistance connection between the negative (ground) terminals of the two VIN terminal blocks. Failure to do so may result in high currents flowing in the ground connectors of the ribbon cable and may cause damage to the Duet 2 or Duex. Preferably, make this connection using either solid core wire, or stranded core wire with ferrules of the correct size crimped on securely. Re-tighten the terminal block screws regularly for the first few days of use, to make sure there is no creep in the wires causing the screws to become loose. "

              Might be worth checking. There is some stuff in that link abopt the ribbon cable too (in case you haven't already seen it).

              Cheers

              Ian
              https://somei3deas.wordpress.com/
              https://www.youtube.com/@deckingman

              1 Reply Last reply Reply Quote 0
              • fcwiltundefined
                fcwilt @Dougal1957
                last edited by

                @dougal1957 said in Issues powering up with DUEX5 connected to Duet2 crashing:

                there is no load on them at this stage

                Not sure what you mean.

                If the boards are powered up there is current flowing through those wires.

                The way I have wired all of my Duet2/Duex5 setups is by connecting both the + and - power terminals with solid 14 gauge wire. Then I tap into the middle of each with stranded 14 gauge wire and run those to the power supply.

                I have never had anything like the issues mentioned.

                Frederick

                Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                1 Reply Last reply Reply Quote 0
                • Dougal1957undefined
                  Dougal1957
                  last edited by Dougal1957

                  if you look the main feeds are actually 16 AWG but the link between the 2 boards is quite a bit thicker 12AWG Apparently by No load I mean no motors or anything connected this is weird and is not mine so posted on behalf of a friend who every time he tries to register the Captcha throughs an error and won't complete.

                  1 Reply Last reply Reply Quote 0
                  • Dougal1957undefined
                    Dougal1957
                    last edited by

                    Apparently the issue sort of goes away if he disconnects the 40 way ribbon and further test seem to show that with it all connected up on the power and 40 way stuff the board will boot up and stay up with USB Connected but when the 24V is applied the boards reboot at approximately 15s cycle which is also very weird.

                    Cables from the PSU are 16AWG and the Ground link between the boards is 12AWG

                    1 Reply Last reply Reply Quote 0
                    • fcwiltundefined
                      fcwilt
                      last edited by

                      Has he tried a different power supply?

                      Frederick

                      Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

                      1 Reply Last reply Reply Quote 0
                      • dc42undefined
                        dc42 administrators
                        last edited by

                        Are any endstop switches or other devices connected to the endstop inputs on the DueX5? If yes, disconnect them and try again. If no, then I suspect that the DueX5 is faulty so please ask your supplier for a replacement under warranty.

                        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

                        Dougal1957undefined 1 Reply Last reply Reply Quote 0
                        • Dougal1957undefined
                          Dougal1957 @dc42
                          last edited by

                          @dc42 Thank you David I will pass it on this is the user I emailed you and tony about the Captcha is failing to allow him to register.

                          Doug

                          1 Reply Last reply Reply Quote 0
                          • Nuramoriundefined
                            Nuramori
                            last edited by Nuramori

                            Hello all. I was able to get registered, and I thank Doug for assisting in being my proxy until I was able to get situated.

                            I’ll address some of the points raised and the results of the last suggestion.

                            All power wiring is 16awg; the ground connection between the duet and duex (as seen labeled on the wire in the first picture) is 12awg. I performed the last recommended test (unplugging the E6 endstop connection I had) and rebooted. The result was everything worked perfectly. The connection is a NO switch connection. It’s part of an emergency stop switch that’s NC/NC + NO. The two NC is hardwired to cut power to the 24v psu and the NO is intended to be connected to E6 so when the button is activated power is cut and the duet can respond to the condition (the duet is powered by a separate 12v/5v psu). I then moved the connection all other stops on the duex, and the issue would repeat on each of those, always working fine once it was removed. When I attached it to the E1 endsrop on the Duet, it would work as intended and not exhibit the problems seen when attached to a duex endstop.

                            I did note that there was a post 1.19 change to configuring endstop use, but when commented out the issues remained, so it wasn’t the config file that contributed to the issue.

                            1 Reply Last reply Reply Quote 0
                            • dc42undefined
                              dc42 administrators
                              last edited by

                              What's happening is that your NO endstops are picking up a lot of noise. This is a hazard with NO endstops, and is one of the reasons why NC endstops are preferred. So I suggest you change your endstops to use the NC connections. Alternatively, connecting a resistor of between 1K and 3K between the STP and +3.3V pins of the endstop connector may work; or a capacitor of about 10nF in parallel with the endstop switch.

                              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

                              Nuramoriundefined 1 Reply Last reply Reply Quote 0
                              • Nuramoriundefined
                                Nuramori @dc42
                                last edited by

                                @dc42 thanks for the info! I’ll see if I can find another emergency stop switch that has more than two NC and/or the other two suggestions. Appreciate the help.

                                1 Reply Last reply Reply Quote 0
                                • Nuramoriundefined
                                  Nuramori
                                  last edited by

                                  ok, I split the difference and put a 2.49k pullup resistor between 3.3v and the stop. all is well now!

                                  Thanks to everyone.

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