Multiple failures



  • I just finished up the printer that was setup with help from the forum. I have printed 6 times, with 4 hours being the longest single print to date. Everything up til the last few attempts has been perfect. This morning I turned on the printer and the message unknown heater channel bed. Bed temp reads 2000 deg c. I checked the ohms for the thermistor and they are both bed and hotend 102k. I also checked hotend therm against the gnd, frame metal and Both supply lines to the hot end heater itself. no short to gnd nor to any other voltage. The bed checks out the same way. Vssa pins read correct. I am getting a difference in temp reading for heater 1 the hotend of 35 higher or so degrees c. smoke and color burning out of filament. All the other completed prints where handled with proper temp readings. Nothing has changed what so ever. no files, mechanical, not even the filament. It just started acting up.



  • 3:23:59 PM
    Error: Temperature reading fault on heater 0: unknown temperature sensor channel

    ; Configuration file for Duet Ethernet (firmware version 1.17 to 1.19)
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Sat Nov 25 2017 12:15:39 GMT-0500 (Eastern Standard Time)

    ; General preferences
    M111 S0 ; Debugging off
    G21 ; Work in millimetres
    G90 ; Send absolute coordinates…
    M83 ; ...but relative extruder moves
    M555 P1 ; Set firmware compatibility to look like RepRapFirmare
    G31 X-52 Y50 Z.9 P25
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X295 Y302 Z207 ; Set axis maxima

    ; Endstops
    M574 X1 Y1 S1 ; Set active low endstops
    M574 Z0
    M558 P5 X0 Y0 Z1 H5 F100 T2000 ; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
    G31 P600 X0 Y12 Z1 ; Set Z probe trigger value, offset and trigger height
    M557 X52:295 Y50:298 S20 ; Define mesh grid

    ; Drives
    M569 P5 S1 R1 T5 ; Drive 0 goes forwards
    M569 P6 S2 R1 T5 ; Drive 1 goes forwards
    M569 P7 S1 R1 T5 ; Drive 2 goes forwards
    M569 P8 S2 R1 T5 ; Drive 3 goes forwards
    M569 P9 S2 R1 T5 ; Drive 4 goes forwards
    M569 P10 S2 R1 T5 ; Drive 5 goes forwards
    M584 X5 Y6 Z7 E8:9:10 ; Apply custom drive mapping
    M350 X16 Y16 Z16 E16:16:16 I0 ; Configure microstepping without interpolation
    M92 X80 Y100 Z4800 E110:110:110 ; Set steps per mm
    M566 X300 Y300 Z12 E120:120:120 ; Set maximum instantaneous speed changes (mm/min)
    M203 X15000 Y15000 Z280 E1200:1200:1200 ; Set maximum speeds (mm/min)
    M201 X1000 Y600 Z150 E150:150:150 ; Set accelerations (mm/s^2)
    M906 X2000 Y2000 Z2000 2000:2000:2000 ; Set motor currents (mA)
    M84 S0 ; Disable motor idle current reduction

    ; Heaters
    M307 H7 A-1 C-1 D-1 ;disable heater 7 to free up for servo signal
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S55 ; Set temperature limit for heater 0 to 80C
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S260 ; Set temperature limit for heater 1 to 260C

    ; Tools
    M563 P0 D0 H1 F0:1:2 ; Define tool 0 FAN 0,1,2 FOR EXTRUDER 0
    M563 P1 D1 H1 F0:1:2 ; DEFINE TOOL 1 FAN 0,1,2 FOR EXTRUDER 1
    M563 P2 D2 H1 F0:1:2 ; DEFINE TOOL 2 FAN 0,1,2 FOR EXTRUDER 2
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C
    M568 P0 D0:1:2 S1 ; Enable mixing for tool 0,1,2
    M567 P0 E0.33:0.33:0.34 ; Set mixing ratios for tool 0

    ; Network
    M550 Pkathy's printer ; Set machine name
    M540 PBE:EF:DE:AD:FE:ED ; Set MAC address
    M552 P192.168.2.9 S1 ; Enable network and set IP address
    M553 P255.255.255.0 ; Set netmask
    M554 P192.168.1.254 ; Set gateway
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Fans
    M106 P0 S1 I0 F255 H1 T45 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P1 S1 I0 F255 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned ON
    M106 P2 S1 I0 F255 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Custom settings are not configured

    ; Miscellaneous
    M80 ;atx on
    M81 ;atx off
    T0:1:2 ; Select first tool

    ((starting print file))<<<<<<<<<<<<<<

    ;Generated with Cura_SteamEngine 15.01
    ; My start code
    G28 ; Home extruder
    G29 S1 ; used stored height map
    G1 Z15 F3000 ; Z_TRAVEL_SPEED
    M106 S0 ; Turn off fan
    G90 ; Absolute positioning
    M83 ; Extruder in relative mode
    M190 S50 ; Turn on bed wait til 50c

    ; Activate all used extruder
    M104 T0
    ;M104 T1
    ;M104 T2

    G92 E0 ; Reset extruder position
    ; Wait for all used extruders to reach temperature
    ;M109 S210
    ;M109 T1 S210
    ;M109 T2 S210

    M106 ; Trun fan back on
    ;Layer count: 35
    ;LAYER:0
    M107
    G0 F9000 X101.016 Y114.812 Z0.300



  • M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S55 ; Set temperature limit for heater 0 to 80C
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S260 ; Set temperature limit for heater 1 to 260C

    Sure looks to me like you're setting up heater 1's thermistor twice and never setting up heater 0's thermistor.


 

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