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    220V Heatbed + Crydom D2425 Relay + DuetWifi Wiring ... correct?

    Duet Hardware and wiring
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    • 3Dealo
      3Dealo last edited by

      Hello there everyone,
      Here I post the diagram of the connections I believe to be correct , could anyone with more experience check this for me.

      alt text

      Thanks,

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      • dc42
        dc42 administrators last edited by

        That looks good.

        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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        • WarriorMe
          WarriorMe last edited by

          Are you using an ATX power supply, or other PSU than can be turned on and off?
          If you are, i'd suggest putting a mechanical relay in series with the SSR, and connecting it's control signal to the duet's Power input. That way the duet can relatively reliably turn off the heater together with the power supply, should the SSR fail in a closed state. Or, alternatively, you could use a thermal fuse on the heated bed.

          I'm no professional electrician, but i believe you should also connect any metallic frame parts near the heated bed to the earth pin of that power plug, in case something damages the heatbed or wiring insulation.

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