How to turn off PS_ON on heather failure?

zapta

My printer uses external 5V and a PS_ON relay that cuts mains power from the 24V PS and bed heather. Manually executing M81 does turn the relay off (good). I am trying to set it up such that a nozzle thermal runaway will turn off PS_ON (equivalent of M81) but am not sure how.

This is how I test

Set nozzle temp to 200c in paneldue.
Short pin Out1 to ground to simulate a power mosfet short.
wait a few seconds until the duet detects the anomaly and print the message "Heater 0 fault: exceeded allowed temperature excursion: target 200.0°C actual 249.3°C"

How should I configure the printer such that the fault will also turn off PS_ON (similar to M81)? I am using the latest 3.4/stable.

I also have a file 0:/macros/heater-fault.g with the line below but I don't see that message on heather fault.

echo "heater-fault.g invoked"

My sys/config.g:

; Configuration file for a Voron V2.4 250 with Duet 3 Mini 5+
 
; Initial neopixels color.
M150 R0 U255 B0  P255 S20

; General Settings
M575 P1 S1 B57600                                               ; Enable support for PanelDue
G90                                                             ; XYZ absolute mode.
M83                                                             ; Extruder relative mode.
M550 P"Voron"                                                   ; Printer name
M669 K1                                                         ; CoreXY mode

; Wait a moment for the CAN expansion boards to start
;G4 S2

; Network
M552 S1                                                         ; enable network
M586 P0 S1                                                      ; enable HTTP
M586 P1 S1                                                      ; enable FTP
M586 P2 S0                                                      ; disable Telnet

; Stepper Drives (top view)
;
;  X (0.5)    back     Y (0.6)
;  +----------+----------+
;  | Z1 (0.2) | Z2 (0.3) |
;  +----------+----------+
;  | Z0 (0.1) | Z3 (0.4) |
;  +----------+----------+
;             front
;
M569 P0.0 S1                                                    ; E   drive 0.0 goes FORWARD

M569 P0.1 S0                                                    ; Z0  drive 0.1 goes BACKWARDS
M569 P0.2 S1                                                    ; Z1  drive 0.2 goes forwards
M569 P0.3 S0                                                    ; Z2  drive 0.3 goes BACKWARDS
M569 P0.4 S1                                                    ; Z3  drive 0.4 goes forwards

M569 P0.5 S0                                                    ; X   drive 0.5 goes BACKWARDS
M569 P0.6 S0                                                    ; Y   drive 0.6 goes BACKWARDS

M584  E0.0 Z0.1:0.2:0.3:0.4 X0.5 Y0.6                           ; Axis -> driver, mapping

M350 X16 Y16 Z16 E16 I1                                         ; Enable 16 microstepping with interpolation

M92 X80.00 Y80.00 Z400.00 E562                                  ; Microsteps per mm

M906 X1200 Y1200 Z1200 E600 I30                                 ; Motor currents (mA) and motor idle factor in percents
M84 S30                                                         ; Motors idle timeout (secs)

; Axis travel limits (NOT print area)
M208 X0 Y0 Z-0.3 S1                                             ; Axis minima
M208 X248 Y253 Z210 S0                                          ; Axis maxima


; Z Belt Locations. By Z motor order.
; S20 is max correction in mm to apply in QGL.
M671 X-65:-65:315:315 Y0:345:345:0 S20     

M557 X25:225 Y25:225 S40                                        ; Bed mesh probing grid (Probe X/Y offset is applied automatically)


; Select normal speed/acceleration parameterts.
M98 P"/macros/speed_printing"

; Axis endstops
M574 X2 S1 P"^io1.in"                                           ; Active-high (open circuit) X max endstop on pin io1.in
M574 Y2 S1 P"^io2.in"                                           ; Active-high (open circuit) Y max endstop on pin io2.in
M574 Z0 P"nil"                                                  ; No Z endstop

; CLICKY probe
; --------------
; NOTE: Keep diving height (H arg) high, otherwise we risk
; a crash during mesh calibration.
M558 K0 P8 C"io5.in" T18000 F500:100 H20 A10 B1 S0.03
; Use the Z arg to adjust Z height.
G31 K0 P500 X-2 Y19 Z7.39    ; Increase Z offset to lower the nozzle.


; Bed heater 
; -----------
M308 S0 A"Bed" P"temp0" Y"thermistor" T100000 B3950   ; Define temp sensor 0. Using Kenovo NTC therminstor spec
M950 H0 C"out0" T0 Q10                                ; Define heater at out0 and controlled by temp sensor 0. PWM 10Hz.
M140 P0 H0                                            ; Mark heater H0 as bed heater 0 (for DWC)

; NOTE: Failure temp should be higher than max temp to accomodate
; for temp overshoot.
M143 H0 P1 A0 S130 C0         ; Heater failure if reaching this temp. 
M143 H0 S120                  ; Max temp 120C

M307 H0 B0 R0.808 C129.0 D2.22 S1.00  ;  S = max PWM %, calibrated for 100c

; Nozzle heater 
; --------------
; https://e3d-online.zendesk.com/hc/en-us/articles/4409926923665-Revo-Six-RepRap-Firmware-Guide
M308 S1 A"Nozzle" P"temp1" Y"thermistor" T100000 B4725 C7.060000e-8   ; Define temp sensor 1 (Revo)
M950 H1 C"out1" T1							      ; Define heater at out1 and controlled by temp sensor 1
M307 H1 B0 R4.199 C119.5:100.0 D1.74 S1.00  ; PID parameters
M143 H1 S260                                ; Max temp 260C				

; Material fan
; ------------
M950 F0 C"out5" Q50000   ; 50Khz for the Fan Smoother              
M106 P0 S0 H-1 C"Material Fan"   

; Heatshink fan.
; --------------
M950 F1 C"out6" Q50000   ; 50khz for the Fan Smoother.    
; NOTE: Thermostatically controlled fans are not shown in the DWC fan list.
M106 P1 X0.7 H1 T50 C"Heatsink Fan"  ; Set hot-end fan 50% (thermostatically)

; Electronic bay fans
; --------------------
; NOTE: The two fans are connected in parallel and get the same
; control
M950 F2 C"!out3+out3.tach" F25000
M106 P2 S0.75 C"Bay Fan"  ; 75% speed.

; ==================================
; TOOLS
; ==================================

; NOTE: This also create a TOOL FAN alias for the material fan. Confusing.
M563 P0 D0 H1 F0   ; Define tool 0 using fan 0 (part cooling) for M106, Heater H1 is hotend
					; P tool number#
					; D extruder drive# - Drive 0 is the first drive in the machine after the movement drives (usually X, Y and Z)
					; H Heater#
					; F Fan#
; G10 Tool offset and temperatures
G10 P0 X0 Y0 Z0                     ; Set tool 0 axis offsets
G10 P0 R0 S0                        ; Set initial tool 0 active and standby temperatures to 0C

; ==================================
; MISC
; ==================================

M375                            ; Load height map

M572 D0 S0                      ; Pressure Advance. We override in the slicer.
M593 P"none"                    ; Input shaping. We override in the slicer.
M376 H10        				; Fade out mesh compensation over 10mm Z

M80 C"pson"                     ; ATX ON. Enable 24V rail.

M150 U255 B255 P255 S20         ; Set neo pixel color. Daemon.g overrides it.

T0                              ; select first tool

; PS_ON relay Bed trigger
M570 H0 P20 T10 S0    ; Allow a heat bed anomaly to persist for 10 seconds (P10)
                      ; before raising a heater fault. Allow a 10C
                      ; deviation from set point (T10) After 0 minutes of heater
                      ; fault cancel the build (S0).

; PS_ON relay Nozzle trigger
M570 H1 P20 T10 S0    ; Allow a hot end anomaly to persist for 10 seconds (P10)
                      ; before raising a heater fault. Allow a
                      ; 10C deviation from set point (T10) After 0
                      ; minute of heater fault cancel the build (S0).
					
M300 S4000 P50 G4 P200 M300 S4000 P50 ; double beep

OwenD

@zapta
You should be able to invoke a simulated fault by using M957
~~Although it must be noted that the documentation for the event names is incorrect~~
EDIT: Now corrected

M957 E"heater_fault" D1

works for me to test heater 1.

in my heater-fault.g I have

;0:/sys/heater-fault.g - runs when heater fault detected
M291 R"Heater fault" P{"Heater fault detected on heater " ^ param.D} S0 T3
echo "Heater fault :- " ^ param.S
if (state.status=="processing") || (job.file.fileName!=null)
	echo "Pausing print"
	M25 ; pause print
else
	echo "shutting down"
	M0 ; shut down printer

If print is running I just want to pause it as I may be able to correct the fault and continue.
Otherwise I call M0 (stop.g) which will shut down all heaters and then call M81

You could just put M81 in filament-error.g
I've running 3.4 stable on a duet 2 wifi in stand alone mode.

engikeneer

@~~owend~~ @zapta looks like your issue is that your heater-fault.g is in the macros folder when it should be in sys

However if you only what it to shut down the printer, I believe adding the A3 parameter to your M143 still works to automatically down via the PS_ON. However, I have found (tested up to rrf3.2) that this alone shuts down the PSU but doesn't give any notification in some circumstances (e.g. pure over temperature) can lead to a bit of confusion! So I'd recommend using the new heater-fault.g at least to echo which heater had faulted

Edited to tag OP!

OwenD

@engikeneer said in How to turn off PS_ON on heather failure?:

@owend looks like your issue is that your heater-fault.g is in the macros folder when it should be in sys

Wrong person, but I think you're right.
I missed that in the OP's details

zapta

@engikeneer said in How to turn off PS_ON on heather failure?:

@owend @zapta looks like your issue is that your heater-fault.g is in the macros folder when it should be in sys

Thanks. I moved it to the sys directory and it is now invoked, so I guess I can just add there whatever shutdown procedure I need. Also, heater fault simulator suggested by @OwenD is also useful for testing.

The 3.4 release notes say " ...RRF runs macro file heater-fault.g ..." and this threw me to the macros directory.

engikeneer

@zapta & anyone else who stumbles across this thread...

One thing I have just spotted in the RRF3.4 changelog:

Currently, RRF does not attempt to turn off power to the whole machine if the user does not respond to the heater fault. We plan to reinstate this or a similar function in release 3.5.0.

So I believe my answer of using M143 A3 may not work for RRF3.4...

zapta

@engikeneer said in How to turn off PS_ON on heather failure?:

Currently, RRF does not attempt to turn off power to the whole machine if the user does not respond to the heater fault.

I am not sure what 'user does not response' means. When I tested the thermal runaway behavior of the nozzle heater on my printer, I didn't see anything to respond to.

engikeneer

@zapta reading the full section, I think it means the user has to put the command to turn of the printer (M80/M81) in the heater-fault.g, rather than it doing itself by default.
Looks like the plan is to restore that behaviour in RRF3.5