So Im printing large helmate parts right now and I keep noticing the fans kicking into 100% then down to 0% randomly thoughout the print. Ive checked the slicer settings and the fans are set to be off for the first 3 layers then turn to 50% for the rest of the print. I have checked wiring and swapped the fans out with still no luck.
I caught it a few times doing it and its seams the duet 2 wifi I have is doing it. It shows the percentage increasing and decreasing at random points in the print on the pannel due I have. also having bad wiring wouldnt cause the fan to increase in speed. So im wondering why it is doing this, I have checked my config and I cant find anything either. I read a few post about some poeple accidentally setting thermastatic control but it doesnt seam like I have that issue either.
I added my config, if anyone has any ideas, im open to anything.
; Configuration file for Duet Maestro (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.3.2 on Thu Sep 02 2021 14:24:44 GMT-0400 (Eastern Daylight Time)
; General preferences
M575 P1 S1 B57600 ; enable support for PanelDue
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Hail 9000" ; set printer name
M918 P1 E4 F2000000 ; configure direct-connect display
; Network
M552 S1 ; enable network and acquire dynamic address via DHCP
M586 P0 S1 ; enable HTTP
M586 P1 S0 ; disable FTP
M586 P2 S0 ; disable Telnet
; Drives
M569 P0 S1 ; physical drive 0 goes backwards
M569 P1 S1 ; physical drive 1 goes backwards
M569 P2 S0 ; physical drive 2 goes backwards
M569 P3 S1 ; physical drive 3 goes backwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X100 Y100 Z400.00 E397.5 ; set steps per mm
M566 X600 Y600 Z18.00 E300.00 ; set maximum instantaneous speed changes (mm/min)
M201 X1500.00 Y1500.00 Z100.00 E5000.00 ; set accelerations (mm/s^2)
M203 X10000.00 Y10000.00 Z400.00 E3600.00 ; set maximum speeds (mm/min)
M906 X800 Y800 Z800 E900 I50 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Axis Limits
M208 X0 Y0 Z-10 S1 ; set axis minima
M208 X275 Y220 Z240 S0 ; set axis maxima
M579 X0.99 Y1.00 Z.98 ; sets axis scales
; Endstops
M574 X1 S1 P"!xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"!ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S1 P"zstop" ; configure active-high endstop for low end on Z via pin zstop
;Z-Probe
M558 P9 C"^zprobe.in" H5 F100 T2000 ; sets z probe input and speeds
M950 S0 C"exp.heater3" ; sets activation pin
G31 X-61.5 Y4.8 Z2.1 P25 ; sets z probe offests and sets activation value
M557 X30:220 Y25:220 S41 ; define mesh grid
; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4725 ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0 ; create bed heater output on bedheat and map it to sensor 0
M307 H0 B0 R0.224 C550.0 D2.74 S1.00 V12.2 ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S150 ; set temperature limit for heater 0 to 150C
M308 S1 P"e0temp" Y"thermistor" T100000 ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1 ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 R1.833 C222.0 D5.98 S1.00 V12.0 ; sets pids for nozzle
M143 H1 S275 ; set temperature limit for heater 1 to 275C
; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 H-1 B0.2 I0 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P1 H-1 B0.2 I0 ; set fan 0 value. Thermostatic control is turned off
;cpu temp fan
;M308 S2 Y"drivers" A"DRIVERS" ; configure sensor 2 as temperature warning and overheat flags on the TMC2660 on Duet
;M308 S3 Y"mcu-temp" A"MCU" ; configure sensor 3 as on-chip MCU temperature sensor
;M950 F1 C"fan1" Q500 ; create fan 2 on pin fan2 and set its frequency
;M106 P1 H2:3 L0.15 X1 B0.3 T20:70 ; set fan 2 value
;LED's
M950 F2 C"fan2" ; create fan 2 on pin fan2 and set its frequency
M106 P2 H-1 B0.2 I0 C"LEDS" ; set fan 0 value. Thermostatic control is turned off
;M106 P3 H-1 B0.2 I0 C"HappyFan" ; FAN3
; Tools
M563 P0 D0 H1 F0 ; 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
M572 D0 S0.015 ; pressure advance for direct drive extruder
M591 P2 C"e0stop" S1 D0 ; filament monitor connected to E0 endstop
T0 ; Select tool 0
; Custom settings are not defined
; Miscellaneous
M501 ; load saved parameters from non-volatile memory
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss
M21 ; mount the sd card