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    SSR stuck on???

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • gnydickundefined
      gnydick @Phaedrux
      last edited by

      @Phaedrux thanks

      1 Reply Last reply Reply Quote 0
      • jens55undefined
        jens55
        last edited by

        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
        • gnydickundefined
          gnydick @dc42
          last edited by

          @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.

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

            @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
            • whosrdaddyundefined
              whosrdaddy
              last edited by whosrdaddy

              @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

              dc42undefined gnydickundefined 2 Replies Last reply Reply Quote 1
              • dc42undefined
                dc42 administrators @whosrdaddy
                last edited by

                @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

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                • whosrdaddyundefined
                  whosrdaddy
                  last edited by

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

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                  • Phaedruxundefined
                    Phaedrux Moderator
                    last edited by

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

                    Z-Bot CoreXY Build | Thingiverse Profile

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                    • Phaedruxundefined
                      Phaedrux Moderator
                      last edited by

                      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

                      gnydickundefined 1 Reply Last reply Reply Quote 0
                      • gnydickundefined
                        gnydick @whosrdaddy
                        last edited by

                        @whosrdaddy yep, that was it! Thank you!

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                        • gnydickundefined
                          gnydick @Phaedrux
                          last edited by gnydick

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

                          A Former User? 1 Reply Last reply Reply Quote 0
                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            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

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                            • whosrdaddyundefined
                              whosrdaddy
                              last edited by whosrdaddy

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

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

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                              • A Former User?
                                A Former User @gnydick
                                last edited by

                                @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.

                                gnydickundefined 1 Reply Last reply Reply Quote 0
                                • elmoretundefined
                                  elmoret
                                  last edited by

                                  First post: “it’s all wired correctly”

                                  Humble pie!

                                  gnydickundefined 1 Reply Last reply Reply Quote 1
                                  • gnydickundefined
                                    gnydick @elmoret
                                    last edited by

                                    @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
                                    • gnydickundefined
                                      gnydick @A Former User
                                      last edited by gnydick

                                      @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.

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