Switched to 24v from 12v

  • I switched to 24v power supply from a 12v power supply. I got a 24v heater for the hotend and 24v fans all around. Everything was working before the change. Changed everything out and power up and everything except the part cooling fan works. I checked continuity of the wire and it is good. I changed out the connectors on both ends and still the fan will not work. I tried a second 24v fan and it won't work. I plugged the part cooling fan into the port for the hot end fan and set the hot end for 50c and when the hot end gets to 45c, the part cooling fan came on. So anything else I can check?

  • post your config

  • Here is my config.g file

    ; Configuration file for Duet WiFi (firmware version 1.21)
    ; executed by the firmware on start-up
    ; generated by RepRapFirmware Configuration Tool on Tue Oct 30 2018 18:17:49 GMT-0700 (Pacific Daylight Time)

    ; General preferences
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves

    M667 S1 ; Select CoreXY mode

    ; Network
    M550 PV-King ; Set machine name
    M552 S1 ; Enable network
    M587 S"ssid" P"password" ; Configure access point. You can delete this line once connected
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S0 ; Drive 0 goes forwards
    M569 P1 S0 ; Drive 1 goes forwards
    M569 P2 S0 ; Drive 2 goes forwards
    M569 P3 S1 ; Drive 3 goes backwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z3200 E410 ; Set steps per mm
    M566 X600 Y600 Z24 E300 ; Set maximum instantaneous speed changes (mm/min)
    M203 X18000 Y18000 Z600 E1200 ; Set maximum speeds (mm/min)
    M201 X2000 Y2000 Z250 E2500 ; Set accelerations (mm/s^2)
    M906 X800 Y800 Z800 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X300 Y300 Z340 S0 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 S1 ; Set active high endstops

    ; Z-Probe
    M574 Z1 S2 ; Set endstops controlled by probe
    M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch
    M558 P9 H5 F400 T2000 ; Set Z probe type to bltouch and the dive height + speeds
    G31 P25 X25 Y0 Z0.280 ; Set Z probe trigger value, offset and trigger height
    M557 X40:285 Y15:280 S60 ; Define mesh grid

    ; Heaters
    M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S280 ; Set temperature limit for heater 1 to 280C

    ; Fans
    M106 P0 S0 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 ; Define tool 0
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    ; Automatic saving after power loss is not enabled

    ; Custom settings are not configured

    I don't have a fan plugged into the 3rd pwm controlled spot.

  • connect the fan directly to the 24v power supply.
    if it is still not spinning then. then the fans are broken.

  • The second fan is working. But it won't work on "fan0". I am going to plug it into "fan2" and change the config for it to work as a part cooling fan and then tell my slicer to use fan2 for part cooling. For some reason the fan0 port quit working. I bought this board back before they started calling it duet2wifi.

  • you might have blow the fan mosfet for that header. this can happen when the fans are connected the wrong way.
    or since one of your fans isnt working it might have shorted the header.

  • Yeah. It's a bummer. I have it working now on the fan2 header. Thanks for the input.

Log in to reply