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SSR stuck on???

Scheduled Pinned Locked Moved
Duet Hardware and wiring
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  • undefined
    gnydick @Phaedrux
    last edited by 30 Dec 2019, 21:02

    @Phaedrux thanks

    1 Reply Last reply Reply Quote 0
    • undefined
      jens55
      last edited by 30 Dec 2019, 21:03

      It is highly unlikely that the SSR has failed since it is not stuck in the 'on' position. It is way more likely that there is a wiring error.
      Are you aware that the positive line will always be high no matter if the heater is on or off?
      Simply wiring the negative to ground will cause all these issues.
      Verify the ruting of the two control lines.

      1 Reply Last reply Reply Quote 2
      • undefined
        gnydick @dc42
        last edited by 30 Dec 2019, 21:03

        @dc42 do I remap a pin to H0 or do map a different heater to "bed"? I'm kinda lost as to which direction to go.

        undefined 1 Reply Last reply 30 Dec 2019, 21:08 Reply Quote 0
        • undefined
          dc42 administrators @gnydick
          last edited by 30 Dec 2019, 21:08

          @gnydick said in SSR stuck on???:

          @dc42 do I remap a pin to H0 or do map a different heater to "bed"? I'm kinda lost as to which direction to go.

          If you are using RRF2 then use a different heater number. Use M140 with an H parameter in config.g to tell the firmware which one.

          It's very usual to have a dud bed heater mosfet on a Duet. Is the bed heater LED on the Duet permanently illuminated too?

          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

          1 Reply Last reply Reply Quote 0
          • undefined
            whosrdaddy
            last edited by whosrdaddy 30 Dec 2019, 21:10

            @gnydick : If I look at your photo, I believe you made a wiring error, you have wires labeled "BED-SSR" connected to the VIN connector and wired VIN to the Bed output connector!!!! Please double check your wiring, diagrams can be found here

            undefined undefined 2 Replies Last reply 30 Dec 2019, 21:12 Reply Quote 1
            • undefined
              dc42 administrators @whosrdaddy
              last edited by 30 Dec 2019, 21:12

              @whosrdaddy said in SSR stuck on???:

              @gnydick : If I look at your photo, I believe you made a wiring error, you have wires labeled "BED-SSR" connected to the VIN connecter an wired VIN to the Bed output connector!!!! Please double check your wiring, diagrams can be found here

              Well spotted!

              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

              1 Reply Last reply Reply Quote 0
              • undefined
                whosrdaddy
                last edited by 30 Dec 2019, 21:16

                I stared like 10 minutes at his photo and didn't see the error, thanks to @jens55's remark, it all made sense 🙂

                1 Reply Last reply Reply Quote 0
                • undefined
                  Phaedrux Moderator
                  last edited by 30 Dec 2019, 21:19

                  Completely glossed over that one. Should have looked at the diagram.

                  Z-Bot CoreXY Build | Thingiverse Profile

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                  • undefined
                    Phaedrux Moderator
                    last edited by 30 Dec 2019, 21:22

                    But my test asked to disconnect the bed wiring and test the terminals without an SD card present. Was that not actually carried out?

                    Z-Bot CoreXY Build | Thingiverse Profile

                    undefined 1 Reply Last reply 30 Dec 2019, 21:25 Reply Quote 0
                    • undefined
                      gnydick @whosrdaddy
                      last edited by 30 Dec 2019, 21:25

                      @whosrdaddy yep, that was it! Thank you!

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        gnydick @Phaedrux
                        last edited by gnydick 30 Dec 2019, 21:25

                        @Phaedrux I didn't, I just disconnected the SSR and used the wires

                        ? 1 Reply Last reply 30 Dec 2019, 22:14 Reply Quote 0
                        • undefined
                          Phaedrux Moderator
                          last edited by 30 Dec 2019, 21:26

                          I guess then with vin being fed into the bed terminals it was also present on the actual win terminals. Of course.

                          Z-Bot CoreXY Build | Thingiverse Profile

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            whosrdaddy
                            last edited by whosrdaddy 30 Dec 2019, 21:27

                            @gnydick: No problem, I hope you didn't damage your board 😉

                            @Phaedrux: yes indeed, it all makes sense now 😛

                            1 Reply Last reply Reply Quote 0
                            • ?
                              A Former User @gnydick
                              last edited by 30 Dec 2019, 22:14

                              @gnydick said in SSR stuck on???:

                              @Phaedrux I didn't, I just disconnected the SSR and used the wires

                              Sometimes I wonder why you even bother asking for help here, you clearly think you know better than all of us.

                              undefined 1 Reply Last reply 2 Jan 2020, 07:34 Reply Quote 0
                              • undefined
                                elmoret
                                last edited by 31 Dec 2019, 02:48

                                First post: “it’s all wired correctly”

                                Humble pie!

                                undefined 1 Reply Last reply 2 Jan 2020, 07:34 Reply Quote 1
                                • undefined
                                  gnydick @elmoret
                                  last edited by 2 Jan 2020, 07:34

                                  @elmoret I'll be the first to admit when I'm wrong. I didn't insist or argue that it was correct or protest against sending photos. So what's your point?

                                  1 Reply Last reply Reply Quote 0
                                  • undefined
                                    gnydick @A Former User
                                    last edited by gnydick 1 Feb 2020, 07:38 2 Jan 2020, 07:34

                                    @bearer wow. People make mistakes. At what point did I argue, disagree, or try to defend my mistakes in this post?

                                    I know exactly what you're referring to. Solution is easy enough, just don't interact with me. In fact, I can make that happen for you.

                                    1 Reply Last reply Reply Quote 0
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