Only getting 12vs to heater



  • I have a M3d Crane with Duet 2 I believe. Started having issues with my heater it was moving up too slowly no matter what I do. Seems Its been having this sue for a while and would stop during prints. Now it will not go over 50c before I get a fault. Its supposed to be a 24v heater but its only getting 12 volts so I get why its not heating up fast enough. I have traced it back to the board and its only putting out 12v. I have checked wiring and its all correct. So where do I start?



  • What is the board getting in? VIN terminals.


  • Moderator

    12v in, 12v out? If you send M122 in the gcode console, what does it say your voltage is?



  • @SkooobaSteve said in Only getting 12vs to heater:

    M3d Crane

    Make sure the switch on the power supply is set to the correct voltage (120 or 240 volts)...if you're in the US and you have it set on 240volts then you will only be getting 1/2 the voltage output (12 volts) instead of the proper 24 volts.



  • The power supply is set to 115, and it was working sometimes but would drop off hour into a print. According to the M122 says min 23.3, current is 23.6. On the board its self is 12v.


  • administrators

    Where exactly do you measure 12V?



  • @dc42 On the pins where the heater plugs in. I turned on heaters, and checked it before I got a fault and it shut them down.


  • Moderator

    Can you post your config.g and config_override.g (if you use it)? Perhaps your heater setting is running a low PWM duty cycle.

    Ian



  • ; WARNING -- FOR INTERNAL TESTING USE
    ; Configuration file for Duet Maestro (firmware version 2.02RC2 or newer)
    ; executed by the firmware on start-up
    ; Created by PrintM3D
    ; For Crane Quad Testing
    ; WARNING -- FOR INTERNAL TESTING USE
    ;
    ; Please see the text file 'Motor Test Guide' in the root Internal
    ; folder for in-depth information. This file will begin testing on
    ; startup!

    M98 Pgeneral.g ; Call General Configuration Module
    M98 Pnetwork.g ; Call Network Module
    M98 Pmotion.g ; Call Kinematics/Motor Module
    M98 Pthermal.g ; Call Heater/Fan/Sensing Module
    M98 Ptools.g ; Call Toolhead Module

    ; Call QC start up
    ;M98 Pqc.g

    ; thermal.g
    ; Created by PrintM3D
    ; for the Crane Quad

    ; This file declares heater and fan settings.
    ; Heaters
    M305 P0 T100000 B4006 ; Thermistor Config for NTC 100k
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B3988 ; Thermistor Config for NTC 100k
    M143 H1 S265 ; Set temperature limit for heater 1 to 265C

    ; Fans
    ; For Crane Quad: F0 is Heatsink Fan, F1 is Part Cooling fans, F2 is Case Fan
    M106 P0 T45 H1 F50 ; Set Heatsink Fan F0 to Thermostatic
    M106 P1 H-1 F50 ; Set Part Cooler Fans F1 to Gcode Control
    M106 P2 S0.8 F50 ; Set case fan always on at 80%

    I didn't see a Config_overide..g



  • @SkooobaSteve said in Only getting 12vs to heater:

    M98 Pgeneral.g ; Call General Configuration Module
    M98 Pnetwork.g ; Call Network Module
    M98 Pmotion.g ; Call Kinematics/Motor Module
    M98 Pthermal.g ; Call Heater/Fan/Sensing Module
    M98 Ptools.g ; Call Toolhead Module

    post those files as well



  • 11:36:02 AMM98 PTOOLS.G . Green bar

    11:35:50 AMM98 PTHERMAL.G . Green bar

    11:35:34 AMM98 PMOTION.G . Green bar

    11:35:17 AMM98 PNETWORK.G
    HTTP is enabled on port 80
    FTP is disabled
    TELNET is disabled

    M98 PGENERAL.G
    Warning: Macro file config-override.g not found.



  • the content of those files. dont execute the commands.



  • ; general.g
    ; Created by PrintM3D
    ; for the Crane Quad
    ;
    ; The file sets initial movement phases and sets compatibility to RRFW.
    ; General preferences
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves
    M555 P1 ; Set firmware compatibility to look like RepRapFirmare

    ; Load From Memory
    M501 ; Load saved parameters from non-volatile memory

    ;Configure LCD Display
    M918 P1 E4

    ; tools.g
    ; Creates initial tool setup.
    ; Created by PrintM3D
    ; for the Crane Quad
    ;

    ; Tools
    M563 P0 D0:1:2:3 H1 F1
    M567 P0 E0.25:0.25:0.25:0.25
    G10 P0 X0 Y0 Z0
    G10 P0 S0

    M140 S0
    T0

    ; Network
    M550 PCraneQuad ; Set machine name
    M552 P0.0.0.0 S1 ; Enable network and acquire dynamic address via DHCP
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; thermal.g
    ; Created by PrintM3D
    ; for the Crane Quad

    ; This file declares heater and fan settings.
    ; Heaters
    M305 P0 T100000 B4006 ; Thermistor Config for NTC 100k
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B3988 ; Thermistor Config for NTC 100k
    M143 H1 S265 ; Set temperature limit for heater 1 to 265C

    ; Fans
    ; For Crane Quad: F0 is Heatsink Fan, F1 is Part Cooling fans, F2 is Case Fan
    M106 P0 T45 H1 F50 ; Set Heatsink Fan F0 to Thermostatic
    M106 P1 H-1 F50 ; Set Part Cooler Fans F1 to Gcode Control
    M106 P2 S0.8 F50 ; Set case fan always on at 80%

    ; motion.g
    ; Created by PrintM3D
    ; for the crane Quad.

    ; Drives
    M569 P0 S1 D3 V0 ; Drive 0 goes backwards
    M569 P1 S0 D3 V0 ; Drive 1 goes backwards
    M569 P2 S0 D3 V0 ; Drive 2 goes backwards
    M569 P3 S1 D3 V0 ; Drive 3 (E0)
    M569 P4 S1 D3 V0 ; Drive 4 (E1)
    M569 P5 S1 D3 V0 ; Drive 5 (E2)
    M569 P6 S1 D3 V0 ; Drive 6 (E3)

    M350 X16 Y16 Z16 E16:16:16:16 I1 ;micro-stepping
    M92 X80 Y80 Z400 E1960:1960:1960:1960 ; Set steps per mm
    M566 X900 Y900 Z90 E120 ; Set maximum instantaneous speed changes
    M203 X6000 Y6000 Z1200 E1800 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z90 E240 ; Set accelerations (mm/s^2)
    M906 X1000 Y1000 Z1000 E480:480:480:480 I30 ; Set motor currents (mA)
    M84 S60 ; Set idle timeout

    ; Axis Limits
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X230 Y230 Z250 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 Z1 S1 ; Set active High Endstops



  • Sorry really new to this and learning as I go.



  • please verify with a voltmeter that you are getting 24v across the vin.

    on the duet maestro there is no step down transformer that could transform 24v to 12v.
    even if the you were to use pwm on the heater output. that is pulsed at 24v.


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