fan not running at full 24v as per the PSU

npm1

hia,
My duet wifi is practically set up with just a few more crimped terminals left and the final Ac heated bed, however the fan which is a standard, 24v 30mm fan isn't running as loud as it should, when for example I put my finger against it it stops then spins back up.

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Wed Oct 07 2020 00:20:48 GMT+0100 (British Summer Time)

; General preferences
G90                                            ; send absolute coordinates...
M83                                            ; ...but relative extruder moves
M550 P"My Printer"                             ; set printer name
M669 K1                                     ; select CoreXY mode

; Network
M552 S1                                        ; enable network
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 P4 S1                                   ; physical drive 1 goes forwards
M569 P2 S1                                     ; physical drive 2 goes forwards
M569 P3 S1                                     ; physical drive 3 goes forwards
M584 X0 Y4 Z2 E3                               ; set drive mapping
M350 X64 Y64 Z16 E16 I1                        ; configure microstepping with interpolation
M92 X400 Y400 Z600.00 E436.54              ; set steps per mm
M566 X400 Y400 Z12.00 E120.00            ; set maximum instantaneous speed changes (mm/min)
M203 X1500.00 Y1500.00 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 Z1000 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 X315 Y315 Z270 S0                         ; set axis maxima

; Endstops
M574 X1 S1 P"!xstop"                          ; configure active-high endstop for low end on Y via pin ystop
M574 Y1 S1 P"!e1stop"                           ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2                                     ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 H3 C"nil" ;
M950 S0 C"exp.heater3"                         ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F120 T6000            ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y0 Z2.5                            ; set Z probe trigger value, offset and trigger height
M557 X15:215 Y15:195 S20                       ; define mesh grid

; Z-Probe
;M558 P0 H20 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 B1 S1.00                               ; enable 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 B3950 ; 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
 M140 H-1

; Fans
M950 F0 C"fan0" Q2500                           ; 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" Q2500                           ; 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

All home settings are working as expected.

and my jumpers are set to
Vfan jumper select 5v and VFAN as well as standard 5v internal jumper.

When i remove the jumper from the VFan nothing works, nor does it work when the jumper is on the V_FAN VIN

Should I set M950 F0 C"fan0" Q2500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1

to M950 F0 C"fan0" Q25000 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S255 H-1

please help,

I've got the duet wifi with the one car fuse on it not the two or three

Stephen6309

@npm1 Check to see if the V_Fan Jumper Select is set to VIn.

npm1

it does matter now the board blew up with magic smoke along with a burnt bltouch etc, not too mension what may also be damaged.

But thnks for your time

Phaedrux

What is the fan voltage?

If the fan was 12v and you had the fan jumper to 5v, the fan would be spinning slow because it's not getting 12v.

If the fan is 12v and you set the jumper to vin and you psu is 24v the fan now has twice as much juice flowing through it which is sure to cause damage.

To use a 12v fan with 24v vin you would need a buck converter to drop the 24v down to 12v for the fans.

https://duet3d.dozuki.com/Wiki/Connecting_and_configuring_fans#Section_Using_12V_fans_when_VIN_is_24V

@npm1 said in fan not running at full 24v as per the PSU:

it does matter now the board blew up with magic smoke along with a burnt bltouch etc, not too mension what may also be damaged.

But thnks for your time

Can you post a photo of your board to see what might have been damaged?

npm1

@Phaedrux I switched it all upto a previous version of my duet wifi which has no car fuse etc, the fan hasn't changed but you could tell that their was an issue with the 1st board to begin with... Everything on the older board works including the y axis. So who knows I may upgrade to the duet wifi with 3 fuses if all goes well and continue testing on this board

npm1

Is there an option to send this board back to the team for a review and fix or atleast how would I go about doing the trace pcb checks

npm1

I remember it was offered to me time ago but as an option

Phaedrux

@Phaedrux said in fan not running at full 24v as per the PSU:

Can you post a photo of your board to see what might have been damaged?

It sounds like it's gone poof. If we could see if there is damage, and you can explain what does and does not work it might be viable for repair.

npm1

The 5v rail has gone since the WiFi doesn't switch on, the 24v power delivery doesn't work it's mostly the power delivery system, with issues on the y axis stepper driver nothing appears burnt other than the bltouch which ended with a slight spark and and is now burnt....

The fan works normally as when plugged that in to the previous release of the duet it worked as expected, I'm not going to use the burnt bltouch and have ordered a new one

npm1

Can't rate it enough how refreshing the duet wifi is, and for quality of life stuff its worth the cash, working with marlin was great but really everyone I go to the duet wifi difference is shocking, when I plugged my mp mini select 200 that printer was completely silent

dc42

@npm1 said in fan not running at full 24v as per the PSU:

The 5v rail has gone since the WiFi doesn't switch on, the 24v power delivery doesn't work it's mostly the power delivery system, with issues on the y axis stepper driver nothing appears burnt other than the bltouch which ended with a slight spark and and is now burnt....

The fan works normally as when plugged that in to the previous release of the duet it worked as expected, I'm not going to use the burnt bltouch and have ordered a new one

Is there are sign of damage to the small square chip U3, which is close to the VFAN select jumper?

npm1

Will check