duet 2 rrf 3.2 300x300mm heatbed pid tune failed
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hello,
i'm totally new here so sorry if this doesn't belong here.
today my power supply arrived 12v 600w 0-50A, only for my heatbed it's an aluminum plate from ratrig 3003004mm
i use an kapton heatpad with the same dimensions on 12v i have placed a thermistor (T100000 B4138) on it and covered the whole thing with insulation to prevent heat loss from the bottom.
now i started the pid tune of my bed and after 3 hours it gave me this error:21-1-2021 21:56:58 Warning: heater behaviour was not consistent during tuning
Warning: Auto tune of heater 0 failed due to bad curve fit (R=0.036, 1/C=-0.0069:-0.0069, D=0.5)
21-1-2021 19:42:21 Auto tune starting phase 3, fan off
21-1-2021 19:22:44 Auto tune starting phase 2, heater settling
21-1-2021 19:22:44 Auto tune starting phase 1, heater on
21-1-2021 19:22:39 M303 H0 S50
Auto tuning heater 0 using target temperature 50.0°C and PWM 1.00 - do not leave printer unattended
what can be the issue? the power supply has more then enough watts could it be that i use an mosfet? -
Can you post your config.g?
Can you send M122 and post the results?
Can you send M98 P"config.g" and post the results?Perhaps photos of your bed and wiring?
What is the wattage of the bed heater?3 hours isn't unheard of for a bed heater, but the bad curve fit is obviously a problem.
The thermistor might work better embedded in the aluminum plate rather than directly connected to the heater. The algorithm seems the temps increase quickly, but the large aluminum heatsink is quickly carrying away the heat. You could in fact use two thermistors. One embedded for the temperature control, and one directly attached to the heater for a temperature exceed monitor.
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Config.g
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"Den Tokke" ; set printer name
M669 K1 ; select CoreXY mode; Network
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; Drives
M569 P0 S1 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2 E3 ; set drive mapping
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z1600.00 E418.00 ; set steps per mm
M566 X900.00 Y900.00 Z60.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z20.00 E250.00 ; 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 X290 Y294 Z560 S0 ; set axis maxima; Endstops
M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y2 S1 P"ystop" ; configure active-high endstop for high end on Y via pin ystop
M574 Z2 S1 P"zstop" ; configure active-high endstop for high end on Z via pin zstop; Z-Probe
M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed
M557 X15:215 Y15:195 S20 ; define mesh grid; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; 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 S1.00 ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0 ; map heated bed to heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; 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 S1.00 ; disable bang-bang mode for heater and set PWM limit
M143 H1 S280 ; set temperature limit for heater 1 to 280C
M307 H1 R1.736 C235.4 D4.24 S1.00 V12.0 ; PID waarden hotend; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on; 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; Custom settings are not defined
; Miscellaneous
M575 P1 S1 B57600 ; enable support for PanelDue
M122
m122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 3.2 running on Duet Ethernet 1.02 or later
Board ID: 0JD0M-9P6M2-NW4SS-6JKD6-3S86P-TBZHL
Used output buffers: 3 of 24 (17 max)
=== RTOS ===
Static ram: 23460
Dynamic ram: 68608 of which 48 recycled
Never used RAM 19964, free system stack 191 words
Tasks: NETWORK(ready,160) HEAT(blocked,71) MAIN(running,456) IDLE(ready,19)
Owned mutexes:
=== Platform ===
Last reset 03:43:49 ago, cause: power up
Last software reset at 2021-01-16 17:02, reason: User, GCodes spinning, available RAM 19816, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
MCU temperature: min 27.1, current 35.1, max 36.2
Supply voltage: min 12.0, current 12.1, max 12.1, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: position 0, standstill, SG min/max not available
Driver 1: position 0, standstill, SG min/max not available
Driver 2: position 0, standstill, SG min/max not available
Driver 3: position 0, standstill, SG min/max not available
Driver 4: position 0, standstill, SG min/max not available
Driver 5: position 0
Driver 6: position 0
Driver 7: position 0
Driver 8: position 0
Driver 9: position 0
Driver 10: position 0
Driver 11: position 0
Date/time: 2021-01-21 22:29:26
Cache data hit count 4294967295
Slowest loop: 16.13ms; fastest: 0.20ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest read time 3.9ms, write time 6.4ms, max retries 0
=== Move ===
DMs created 83, maxWait 0ms, bed compensation in use: none, comp offset 0.000
=== MainDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== AuxDDARing ===
Scheduled moves 0, completed moves 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP is idle in state(s) 0
Telnet is idle in state(s) 0
File is idle in state(s) 0
USB is idle in state(s) 0
Aux is idle in state(s) 0
Trigger is idle in state(s) 0
Queue is idle in state(s) 0
LCD is idle in state(s) 0
Daemon is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 32.57ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(2) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8
Interface state active, link 100Mbps full duplex
**M98 P"config.g" **
M98 P"config.g"
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Warning: Heater 1 appears to be over-powered. If left on at full power, its temperature is predicted to reach 433C
21-1-2021 22:29:28 m122
for the wiring the kapton heatmat was pre made, only extended the wires with 14AWG wires.
