Duet Ethernet with 24v fan

Bewaren

@dc42 M122
=== Diagnostics ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 2.03 running on Duet Ethernet 1.02 or later
Board ID: 08DGM-917DA-G4MSD-6JKDA-3SN6Q-TST39
Used output buffers: 3 of 24 (6 max)
=== RTOS ===
Static ram: 25680
Dynamic ram: 93280 of which 380 recycled
Exception stack ram used: 260
Never used ram: 11472
Tasks: NETWORK(ready,652) HEAT(blocked,1236) MAIN(running,3780) IDLE(ready,160)
Owned mutexes:
=== Platform ===
Last reset 00:00:19 ago, cause: power up
Last software reset at 2019-07-29 14:33, reason: User, spinning module GCodes, available RAM 11472 bytes (slot 3)
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms, max retries 0
MCU temperature: min -64.2, current -57.9, max -57.9
Supply voltage: min 16.7, current 16.9, max 17.0, under voltage events: 0, over voltage events: 0, power good: yes
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2019-07-29 17:01:52
Cache data hit count 44910390
Slowest loop: 1.10ms; fastest: 0.07ms
I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
=== Move ===
Hiccups: 0, FreeDm: 169, MinFreeDm: 169, MaxWait: 0ms
Bed compensation in use: none, comp offset 0.000
=== DDARing ===
Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 2 allocated, 0 in use
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
serial is idle in state(s) 0
aux is assembling a command in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Slowest loop: 4.33ms; fastest: 0.02ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8
Interface state 5, link 100Mbps full duplex

Bewaren

From what I can tell its getting 17v?, I may be incorrect though

dc42

@bewaren said in Duet Ethernet with 24v fan:

From what I can tell its getting 17v?, I may be incorrect though

Is your mains voltage 120V? If so, check whether your PSU has an input voltage selector switch that is set to 230V.

Bewaren

The PSU is set to 220v atm. Could it be that the PSU is faulty or have I maybe bought a PSU that wont work with this board?, this is what I am using.

https://www.amazon.co.uk/gp/product/B071W121H7/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

dc42

@bewaren said in Duet Ethernet with 24v fan:

The PSU is set to 220v atm. Could it be that the PSU is faulty or have I maybe bought a PSU that wont work with this board?, this is what I am using.

https://www.amazon.co.uk/gp/product/B071W121H7/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1

That PSU looks OK unless you are using a high powered bed heater.

What is your local mains voltage? Your profile doesn't give your location.

If you have a multimeter, use it to measure the voltage across the VIN terminals.

Bewaren

@dc42 UK, so 230v, bed heater isn't high powered, just turned the printer back on and it seems the PSU has bust, pop and on inspection one of the caps inside has gone, ordering a new one today so will test the VIN terminals tomorrow, but potentially the PSU has been the cause of the issue all along?

Phaedrux

That would explain the over volt on the 12v fans and not working 24v fans

Bewaren

New PSU and still no luck with getting the 24v cooling fan to work, its wired too PWM fan0, I am really unsure as to what the issue could be at this point, any ideas would be great @dc42 @Phaedrux

Bewaren

I am 100% sure I am receiving 24v on the board from my PSU as I have checked, I am also outputting 24v on the fan ports, very confused why its not powering the fan.

Phaedrux

Does the fan work if you connect it directly to 24v power?

What is you m106 command to control the fan?

Which port are you using?

Is the fan fuse intact?

Bewaren

Solution!, I had checked literally everything and replaced everything, turns out it was the wire, I set my multimeter to continuity mode and found that there was an internal break in my + wire connecting to the fan, looked intact and was the only other part I hadn't replaced, now that thats gone and a new wire is in place I am up and running with it, so it seems anyway!

Thanks for the support guys!