Power problem: not getting 24V
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Hey,
After wiring a (faulty) heater cartridge. My Duet 3 Mini 5+ shutdown. Whilst searching for the error I found out that my heater cartridge was shorting. I unplugged everything from my board, but now it only works when used with a USB cable. I still have acces to the DWC. I'm guessing that a little fuse blew (maybe 12V one). My questions is, is there anyway to correct this mishap or other measurements that I can do to further debug.
Tests:
*When the PSU is on and connected, there is not 24V on the POWER IN pins.
*M112:
=== Diagnostics ===
RepRapFirmware for Duet 3 Mini 5+ version 3.3RC2 (2021-05-11 14:55:40) running on Duet 3 Mini5plus WiFi (standalone mode)
Board ID: LDDNX-L096U-D65J0-40KMY-1503Z-RDMAJ
Used output buffers: 3 of 40 (27 max)
=== RTOS ===
Static ram: 102476
Dynamic ram: 105960 of which 132 recycled
Never used RAM 35136, free system stack 170 words
Tasks: NETWORK(ready,15.2%,226) HEAT(notifyWait,0.0%,251) Move(notifyWait,0.1%,338) CanReceiv(notifyWait,0.0%,943) CanSender(notifyWait,0.0%,371) CanClock(delaying,0.0%,341) TMC(notifyWait,0.0%,124) MAIN(running,79.3%,412) IDLE(ready,4.6%,29) AIN(delaying,0.8%,273), total 100.0%
Owned mutexes: WiFi(NETWORK)
=== Platform ===
Last reset 00:02:08 ago, cause: POWER UP
Last software reset at 2021-12-09 21:12, reason: User, GCodes spinning, available RAM 32104, slot 0
Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00000000 BFAR 0xe000ed38 SP 0x00000000 Task MAIN Freestk 0 n/a
Error status: 0x00
Aux0 errors 0,0,0
Aux1 errors 0,0,0
MCU revision 3, ADC conversions started 128713, completed 128712, timed out 0, errs 0
Step timer max interval 1492
MCU temperature: min 25.6, current 26.1, max 26.1
Supply voltage: min 0.7, current 0.7, max 2.5, under voltage events: 0, over voltage events: 0, power good: NO
Heap OK, handles allocated/used 0/0, heap memory allocated/used/recyclable 0/0/0, gc cycles 0
Driver 0: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Driver 1: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Driver 2: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Driver 3: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Driver 4: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Driver 5: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Driver 6: position 0, ok, SG min/max not available, read errors 0, write errors 0, ifcnt 0, reads 0, writes 0, timeouts 0, DMA errors 0
Date/time: 2021-12-10 01:00:14
Cache data hit count 248750341
Slowest loop: 333.24ms; fastest: 0.12ms
=== Storage ===
Free file entries: 10
SD card 0 detected, interface speed: 22.5MBytes/sec
SD card longest read time 3.1ms, write time 210.7ms, max retries 0
=== Move ===
DMs created 83, 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, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
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
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 68, send timeouts 68, received 0, lost 0, longest wait 0ms for reply type 0, peak Tx sync delay 0, free buffers 17 (min 17)
Last cancelled message type 30 dest 127
=== Network ===
Slowest loop: 384.00ms; fastest: 0.06ms
Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
HTTP sessions: 1 of 8- WiFi -
Network state is active
WiFi module is connected to access point
Failed messages: pending 0, notready 0, noresp 1
WiFi firmware version 1.26
WiFi MAC address d8:bf:c0:14:e8:3b
WiFi Vcc 3.43, reset reason Power up
WiFi flash size 2097152, free heap 24880
WiFi IP address 192.168.0.191
WiFi signal strength -72dBm, mode 802.11n, reconnections 0, sleep mode modem
Clock register 00002002
Socket states: 0 0 0 0 0 0 0 0
Sen
- WiFi -
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Well if there is no voltage measured on the board power in pins then the power supply may have failed.
Frederick
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@fcwilt thank you, for your respons. Without the Duet board connected the power supply does output 24V.
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@asen said in Power problem: not getting 24V:
@fcwilt thank you, for your respons. Without the Duet board connected the power supply does output 24V.
When you test it with the power supply connected have you disconnected everything else from the board?
Frederick
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@fcwilt Yes, only the WIFI antenna was connected.
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@asen said in Power problem: not getting 24V:
@fcwilt Yes, only the WIFI antenna was connected.
Well that suggests something on the board has failed and is shorting out the power supply - thus not voltage is measured on the board power in pins.
However I don't know the board hardware well enough to know what that might be.
@dc42 would surely know.
Is there anything on the board that looks burnt or swollen?
Frederick
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Not that I can see of.
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I don't see anything either.
Well it is possible, though not likely, that the power supply has failed in a way that prevents it from putting out any power under load (when connected to the duet board).
Do you have another power supply you could try?
Frederick
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@asen Tomorrow, I'll try in the lab with an 5A 30V Adjustable DC Power Supply. Should be okay to test with, I think. I'll post my findings/measurements.
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Have you tested the fuses for continuity?
Do you notice any components getting hot when VIN is applied?
What LEDs light up when VIN is applied? -
@asen Good news, when plugged to the LAB PSU, the 12V LED lid up. With nothing plugged into it, their is a current draw of 0.1A. I've taken a temporary 24V-6.5A PSU.
ps: Yes, I know the wiring is not adequate, it was just for a quick test. When used with a PSU all my cables are crimped.
To do: Test it with the new PSU, if everything works as intended I'll write it.
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@phaedrux Yes, if you're talking about the two big fuses by the VIN port. Both are still good.
Nothing is getting hot. For your last question I kindly refer you to my latest reply on this thread.
thank you -
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@fcwilt Yes, just tested with the new PSU. Works again, Thank you for your help. This thread can be marked as solved.
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undefined Phaedrux marked this topic as a question
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undefined Phaedrux has marked this topic as solved
