Tool Board Heater Tuning Leading To Faults

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

boom, fault at 70c

Drat.

Does the fault occur when the temp is rising? peaked? dropping?

Did you leave all the tool boards connected?

KevinMar

@fcwilt All boards connected, happens ALWAYS when heating up. Never reaches peak or anything

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt All boards connected, happens ALWAYS when heating up. Never reaches peak or anything

But it seems to be happening when the cooling fan kicks in?

Have you changed the temp of the cooling fan to see if the fault tracks that temp?

How about adding a M570 for that heater and increase the default P parameter value (5) to something like 30.

Frederick

KevinMar

@fcwilt Yeah, lowered the fan temp to 50, still faulted at about 78C.

M750 is at P10, will raise to 30

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt Yeah, lowered the fan temp to 50, still faulted at about 78C.

M750 is at P10, will raise to 30

I'm interested to see which parameters affect when the fault occurs.

It seems we don't know exactly what condition is occurring that is triggering the fault.

Does a M122 report anything related to the fault?

Frederick

Phaedrux

I'd still like to see a photo of the hotend in case there is something obvious.

fcwilt

@phaedrux said in Tool Board Heater Tuning Leading To Faults:

I'd still like to see a photo of the hotend in case there is something obvious.

Perhaps you know the answer to this question.

He posted a screen shot showing 3 heaters displaying a fault.

Does a single heater faulting cause all heaters to display a fault or did all three heaters have to fault at the same time?

Frederick

KevinMar

@phaedrux Ask and you shall receive

KevinMar

@fcwilt It's a printer with 4 tools, just so happened that the 4th tool continued heating to ~120C before faulting (different M307 parameters). All 4 tools have the issue

Phaedrux

@fcwilt said in Tool Board Heater Tuning Leading To Faults:

Does a single heater faulting cause all heaters to display a fault or did all three heaters have to fault at the same time?

I can't quite tell from that photo, but is the heater block itself making contact with the body of the extruder, or is there an air gap exposing the heat break?

Is there any adjustability on the duct to lower it slightly to direct more air away from the block/nozzle itself?

KevinMar

@phaedrux The Hemera tool and V6 hotend are assembled correctly.
There is no adjustability to the fan duct, but the ducting is aimed down to the nozzle. It's a fan duct by Rene Jurack, evaluated by an aerodynamicist at BMW

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt It's a printer with 4 tools, just so happened that the 4th tool continued heating to ~120C before faulting (different M307 parameters). All 4 tools have the issue

When the fault occurs have you issued a M122 to see if anything related to the fault is reported?

Frederick

KevinMar

@fcwilt

m122
=== Diagnostics ===
RepRapFirmware for Duet 3 MB6HC version 3.3 (2021-06-15 21:45:47) running on Duet 3 MB6HC v1.01 or later (SBC mode)
Board ID: 08DJM-9P63L-DJ3T8-6JKDD-3SD6M-9V4Z9
Used output buffers: 1 of 40 (16 max)
=== RTOS ===
Static ram: 150904
Dynamic ram: 63832 of which 12 recycled
Never used RAM 139444, free system stack 200 words
Tasks: SBC(ready,5.3%,298) HEAT(delaying,0.0%,325) Move(notifyWait,0.0%,302) CanReceiv(notifyWait,0.1%,799) CanSender(notifyWait,0.0%,374) CanClock(delaying,0.0%,339) TMC(notifyWait,7.4%,93) MAIN(running,87.0%,922) IDLE(ready,0.1%,29), total 100.0%
Owned mutexes: HTTP(MAIN)
=== Platform ===
Last reset 00:01:48 ago, cause: software
Last software reset at 2021-08-20 13:46, reason: User, none spinning, available RAM 139444, slot 1
Software reset code 0x0012 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0044a000 BFAR 0x00000000 SP 0x00000000 Task SBC Freestk 0 n/a
Error status: 0x00
Step timer max interval 134
MCU temperature: min 38.9, current 39.3, max 39.4
Supply voltage: min 24.0, current 24.1, max 24.1, under voltage events: 0, over voltage events: 0, power good: yes
12V rail voltage: min 12.1, current 12.1, max 12.2, under voltage events: 0
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: position 0, standstill, reads 14442, writes 16 timeouts 0, SG min/max 0/0
Driver 1: position 0, standstill, reads 14442, writes 16 timeouts 0, SG min/max 0/0
Driver 2: position 0, standstill, reads 14443, writes 15 timeouts 0, SG min/max 0/0
Driver 3: position 0, standstill, reads 14447, writes 11 timeouts 0, SG min/max 0/0
Driver 4: position 0, standstill, reads 14443, writes 15 timeouts 0, SG min/max 0/0
Driver 5: position 0, standstill, reads 14445, writes 14 timeouts 0, SG min/max 0/0
Date/time: 2021-08-20 13:48:32
Slowest loop: 60.53ms; fastest: 0.04ms
=== Storage ===
Free file entries: 10
SD card 0 not detected, interface speed: 37.5MBytes/sec
SD card longest read time 0.0ms, write time 0.0ms, max retries 0
=== Move ===
DMs created 125, 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 -1 -1 -1 -1 -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
Heater 0 is on, I-accum = 0.2
=== GCodes ===
Segments left: 0
Movement lock held by null
HTTP* is doing "M122" 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
SBC is idle in state(s) 0
Daemon is idle in state(s) 0
Aux2 is idle in state(s) 0
Autopause is idle in state(s) 0
Code queue is empty.
=== CAN ===
Messages queued 1033, received 5285, lost 0, longest wait 2ms for reply type 6049, peak Tx sync delay 7, free buffers 49 (min 48), ts 545/544/0
Tx timeouts 0,0,0,0,0,0
=== SBC interface ===
State: 4, failed transfers: 0, checksum errors: 0
Last transfer: 1ms ago
RX/TX seq numbers: 3860/3860
SPI underruns 0, overruns 0
Disconnects: 0, timeouts: 0, IAP RAM available 0x2c83c
Buffer RX/TX: 0/0-0
=== Duet Control Server ===
Duet Control Server v3.3.0
Code buffer space: 4096
Configured SPI speed: 8000000Hz
Full transfers per second: 35.84, max wait times: 5.8ms/0.0ms
Codes per second: 1.10
Maximum length of RX/TX data transfers: 6116/716

fcwilt

@kevinmar

Thanks for the M122 dump.

Sure would like to know what condition is causing the fault. I'm surprised that information is not being displayed somewhere.

You mentioned that one heater took longer to fault. Were you able to determine what settings were different that might be relevant?

Have you tried disabling the cooling fan to see if it is playing a role in the fault?

Frederick

KevinMar

@fcwilt Yes, I've tried disabling the fan.
The heater that took longer to fault had different M307 parameters at that time

fcwilt

@kevinmar said in Tool Board Heater Tuning Leading To Faults:

@fcwilt Yes, I've tried disabling the fan.

And it still faulted?

Perhaps @dc42 could explain what conditions can lead to a fault.

Frederick

bucksur

I was trying to point out that R, L and N are the only additional parameters for PT1000 devices.

Fumble

Was there any resolution to this?
I just ran tuning having swapped my V1 tool board for a V1.1 and fitting a new power supply and get the same thing the heater faults every time anywhere between 60 and 100 degrees. Replacing the new M307 parameters with the old works OK