Duet 3 - FW 3.0.1b - bed config issues

  • Hello,

    i'm setting up duet 3 for my e3d tool changer.
    I have already ported the firmware settings to the Duet 2 and they worked fine.

    Now I have installed the duet 3 + 3ch extension card and setting it up and all seems fine EXCEPT

    I got issues with the bed. Bed is 240VAC connected via SSR (setup works and worked on Duet 2 and Duet 2 with RR3 firmware)

    Bed is connected via the Out0 and config is :

    ; Heaters
    M308 S0 P"0.temp0" Y"thermistor" T100000 B4138 C0 		; Set thermistor 
    M950 H0 C"out0" T0							        	; Bed heater
    M143 H0 S225 											; Set temperature limit for heater 0 to 225C
    M140 H0													; Map the heater to the bed

    When I turn the tempreature on the bed - nothing happens, and on the board LED for out0 doesn't light up.
    Also I tried the pin name "bed_heat" and "bedheat" and got message that the pins are undefined.

    Issue with firmware or is the board faulty?

  • administrators

    Have you provided power to the bed +VIN terminal as well as the main +VIN terminal? Duet 3 has separate VIN terminals for the bed heater.

  • Ooooh..... ok xD

  • Wired it on second terminal and works! Thanks 🙂

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