Heater config not working, why?

Chriss

Hi *,

I have a problem with my new setup. (The config is still a bit "wild", do not be shocked, you have been warned. (Mini 5+ FW 3.3)

Thing is: The bed heater does not work:

; Bed
M308 S0 P"0.temp0" Y"thermistor" T100000 B4138	; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out5" T0								; create bed heater output on out0 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

I tried "out5" and "out6", with and without "1." in front. The outputs should drive a SSR. I do not measure any voltage change when I turn on the heater via the DWC. I had a close look the the MosFets next to the output, they look good. I do not measure anythings at the pins, not VIN against GND and not GND when I measure against the power supply.
What else to test? (Jumper is still in factory default)

Full Config:

; Default config.g template for DuetPi
; Replace this with a proper configuration file (e.g from https://configtool.reprapfirmware.org)

; Display initial welcome message
;M291 P"Please go to <a href=""https://www.duet3d.com/StartHere"" target=""_blank"">this</a> page for further instructions on how to set it up." R"Welcome to your new Duet 3!" S1 T0

; Hardware: Duet Mini 5+
; Stepper XY = LDO 0,9° 2Amax  LDO-42STH40-2004MAC
; Stepper Z = LDO 1,8°  2Amax  LDO-42STH48-2004AC
; Stepper E = LDO 1,8   1Amax  LDO-42STH20-1004ASH

; Enable network
if {network.interfaces[0].type = "ethernet"}
    M552 P0.0.0.0 S1
else
    M552 S1

; Network
M586 P0 S1                                         ; enable HTTP
M586 P1 S1                                         ; enable FTP
M586 P2 S1                                         ; enable Telnet

G90                                         ; send absolute coordinates...
M83                                         ; ...but relative extruder moves
M550 P"v2"                                  ; set printer name
M669 K1										; 1=select CoreXY mode   0=Cadasian

;; Toolboards
; M115 B121  ; Show board 121
; M997 B121  ; Update tool 121
; M122 B121  ; Detailed status of toolboard
G4 S1        ; wait for expansion boards to start

;;; Drives
;X
M569 P0.2 S1
M584 X0.2
;Y
M569 P0.1 S0
M584 Y0.1


;; Z
; - front left
M569 P0.5 S1									; physical drive 0.6 goes forward/backward - 
; - front right
M569 P0.6 S0									; physical drive 0.5 goes forward/backward - 
; - back left
M569 P0.0 S1									; physical drive 0.0 goes forward/backward - 
; - back right
M569 P0.4 S0									; physical drive 0.4 goes forward/backward - 
M584 Z0.4:0.0:0.5:0.6

;; E
M569 P121.0 S0
M584 E121.0




;M584 X0.2 Y0.0 Z0.3:0.4:0.5 E121.0				; set drive mapping


M350 X16 Y16 Z16 E16 I1						; configure microstepping with interpolation
M92 X160 Y160 Z400 E560						; set steps per mm   M92 X80.00 Y80.00 Z400.00 E420.00
M566 X200.00 Y200.00 Z12.00 E120.00			; set maximum instantaneous speed changes (mm/min)
M203 X6000.00 Y6000.00 Z480.00 E1200.00		; set maximum speeds (mm/min) Z180
M201 X400.00 Y400.00 Z20.00 E250.00			; set accelerations (mm/s^2)
M906 X1400 Y1400 Z1400 E700 I30				; set motor currents (mA) and motor idle factor in per cent
M84 S30                                     ; Set idle timeout
M84 S120									; Idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                ; set axis minima
M208 X230 Y250 Z275 S0                          ; set axis maxima

;; Endstops -- Display status with: M119
M574 Y2 S1 P"0.io5.in"	; Y
M574 X2 S1 P"!0.io6.in"	; X
M574 Z0 P"nil"			; No Z endstop, we have a probe
; Z probe
; Vinda: Black = Signal - Brown = +5v - Blue = GND
M574 Z1 S2								; Configure Z-probe endstop for low end on Z
M558 P8 C"^121.io0.in" H5 F120 T6000	; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0.1 Y-0.1						; set Z probe offset
G31 Z0.05								; set Z probe  and trigger height
M557 X0:270 Y0:290 S15					; define mesh grid


; Z-level settings
M671 X-65:-65:365:365 Y-20:380:380:-20 S20      ; Define Z belts locations (Front_Left, Back_Left, Back_Right, Front_Right)
M557 X25:275 Y25:275 S25                        ; Define bed mesh grid (inductive probe, positions include the Z offset!)


;; Heaters :: Tune with: M303 H0 S115
; Bed
M308 S0 P"0.temp0" Y"thermistor" T100000 B4138	; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out5" T0								; create bed heater output on out0 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




; Hotend
; Tune in with:  M303 H1 S270       (270=Temp) (M500 to save) 
; Show current settings M307 H1
M308 S1 P"121.temp0" Y"thermistor" T500000 B4702 C1.171057e-7   ; configure sensor 1 as thermistor on pin temp1
M950 H1 C"121.out0" T1										; create nozzle heater output on 0.out3 and map it to sensor 1
M143 H1 S400												; set temperature limit for heater 1 to 320C





;; Fans
; Fan for the printed part:
M950 F0 C"121.out1" Q500		; create fan 0 on pin 0.out9 and set its frequency
M106 P0 S0 H-1 C"Part"			; set fan 0 value. Thermostatic control is turned off

; Fan for the Hotend:
M950 F1 C"121.out2" Q500		; create fan 1 on pin 0.out9 and set its frequency
M106 P1 S1 H1 T45 C"Hotend"		; P="set fan 1" S="value" H="Thermostatic control Heater No." T=" is turned on at 45°C"



;; Tool
M563 P0 S"Tool" D0 H1 F0	; define tool
G10 P0 X0 Y0 Z0				; set tool 0 axis offsets
G10 P0 R0 S0				; set initial tool 0 active and standby temperatures to 0C




;;;;;;;;;;;; Setup Only
;M564 S0 H0 			; Allow movement over the endstops
M302 P1 ; allow cold extrusion
;M302 S1 ; deny cold extrusion
;;;;;;;;;;;; Setup Only END


M501						; Load config-override.g

; Serial interface
M575 P1 B115200 S1
; Mini 12864
M918 P2
;M918 P2 E4 R3 C100
;M150 X2 R255 U255 B255 S3		; set all 3 LEDs to white
M150 X2 R0 U255 B0 S3			; set all 3 LEDs to red

T0						; Select the tool 0 as default

Cheers, Chriss

deckingman

@chriss At a guess, I'd say that it might be because the PWM frequency might be too high for your SSR. I believe that if you don't specify a value, then frequency will default to 250 for heaters. But SSRs usually need much lower values - typically 10 Hz. So try adding Q10 to you M950 command for the bed heater.

i.e. try this: M950 H0 C"out5" T0 Q10.

Note also that the Mosfet switches the negative side, so you won't see any change on the voltage input side of the heater connector.

Chriss

@deckingman said in Heater config not working, why?:

i.e. try this: M950 H0 C"out5" T0 Q10.
I tried it, without success.

Note also that the Mosfet switches the negative side, so you won't see any change on the voltage input side of the heater connector.

Well, what I measure is 24V between "V_OUTLC2+" out out 5 and GND. Clear because we switch GND here. What I do not see is a change on the GND pin.

The SSR works when I trigger it with a wire from GND of the power supply to the SSR.

Cheers, Chriss

Chriss

@chriss Update: I pushed two pins in the connector (the same typo of connectors as on the boad) and powered the pins. That triggered the SSR. So I do not expect any problems with the crimping or the wires.

Cheers, Chriss

Chriss

@chriss I tested now with out0, same result. I do not get the SSR working, I see no GND on the ground pin.

I thing that I should see the LED next to the connector blinking (out0), shouldn't I? (The LED remains off)

Cheers, Chriss

Chriss

@chriss

This here works funnily:

M950 F3 C"0.out0" Q10   ; LED on out6 ground on top pin, plus on 3rd pin from top (V_OUTLC1)
M106 P3 C"LED" S0

So something is wrong with my heater here....

Chriss

@chriss

The config.g looks now like that:

; Default config.g template for DuetPi
; Replace this with a proper configuration file (e.g from https://configtool.reprapfirmware.org)

; Display initial welcome message
;M291 P"Please go to <a href=""https://www.duet3d.com/StartHere"" target=""_blank"">this</a> page for further instructions on how to set it up." R"Welcome to your new Duet 3!" S1 T0

; Hardware: Duet Mini 5+
; Stepper XY = LDO 0,9° 2Amax  LDO-42STH40-2004MAC
; Stepper Z = LDO 1,8°  2Amax  LDO-42STH48-2004AC
; Stepper E = LDO 1,8   1Amax  LDO-42STH20-1004ASH

; Enable network
if {network.interfaces[0].type = "ethernet"}
    M552 P0.0.0.0 S1
else
    M552 S1

; Network
M586 P0 S1                                         ; enable HTTP
M586 P1 S1                                         ; enable FTP
M586 P2 S1                                         ; enable Telnet


;; Heaters :: Tune with: M303 H0 S115
; Bed
;M308 S0 P"0.temp0" Y"thermistor" T100000 B4138	; configure sensor 0 as thermistor on pin temp0
;M950 H0 C"out6" T0 Q10							; create bed heater output on out0 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

; Bed
M308 S0 P"temp0" Y"thermistor" T100000 B4138     ; configure sensor 0 as thermistor on pin temp0
M950 H0 C"out0" T0                               ; create bed heater output on out0 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

All other .g files where removed. And I still do not see the LED next to out0 blinking.
I have two more of the Mini 5+ and use exactly the same code on them and it works there. :?

Cheers, Chriss

Chriss

@chriss

I upgraded to "3.4.0beta3 (2021-08-24)" now and you guys know what? The heater works now. Why? I have no idea..... :? Maybe a bit more "reset" than with a normal reboot? I have no idea at all.

Anyway, it works now...

Cheers, Chriss

Phaedrux

Very strange. Please keep us posted.

Chriss

@phaedrux

I will keep you guys up to date when I have that again.

Cheers, Chriss