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    Duet Ethernet with 24v fan

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    Duet Hardware and wiring
    fan0 cooling duet3d ethernet
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    • Bewarenundefined
      Bewaren
      last edited by

      Tried another pack of 24v fans and a 12v fan, 12v fan was over voltaged but worked, 24v fans did nothing, is there somewhere I have to define that the fans I am using are 24v?

      Phaedruxundefined dc42undefined 2 Replies Last reply Reply Quote 0
      • Phaedruxundefined
        Phaedrux Moderator @Bewaren
        last edited by

        @bewaren it really seems like the 24v fans are dead.

        Can you setup a test with just power from the 24v PSU directly to the fans to remove the duet completely from the equation?

        If the 12v fans work but the 24v don't then it must be the 24v fan that isn't working. You can carefully measure the voltage on the fan pins to verify.

        Z-Bot CoreXY Build | Thingiverse Profile

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        • dc42undefined
          dc42 administrators @Bewaren
          last edited by

          @bewaren said in Duet Ethernet with 24v fan:

          Tried another pack of 24v fans and a 12v fan, 12v fan was over voltage but worked, 24v fans did nothing, is there somewhere I have to define that the fans I am using are 24v?

          Are you sure that you have the VFAN jumper set to VIN, not to 5V?

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

          Bewarenundefined 1 Reply Last reply Reply Quote 0
          • Bewarenundefined
            Bewaren @dc42
            last edited by

            @dc42 I am unsure, what pins should I have the jumper on?, its currently on the two right hand pins if looking at it from: https://d17kynu4zpq5hy.cloudfront.net/igi/duet3d/YN2oahyGpcPNN1Pw.huge | assuming that the jumper in question is the 3 pin one central to the 5 fan pins.

            dc42undefined 1 Reply Last reply Reply Quote 0
            • dc42undefined
              dc42 administrators @Bewaren
              last edited by

              @bewaren said in Duet Ethernet with 24v fan:

              @dc42 I am unsure, what pins should I have the jumper on?, its currently on the two right hand pins if looking at it from: https://d17kynu4zpq5hy.cloudfront.net/igi/duet3d/YN2oahyGpcPNN1Pw.huge | assuming that the jumper in question is the 3 pin one central to the 5 fan pins.

              That's correct, it's the right hand position if you are looking at the Duet with the stepper motor outputs at the top.

              To state the obvious: are you sure that the Duet is receiving 24V? If you send M122 to the Duet, the diagnostic report will include the VIN voltage.

              Duet WiFi hardware designer and firmware engineer
              Please do not ask me for Duet support via PM or email, use the forum
              http://www.escher3d.com, https://miscsolutions.wordpress.com

              Bewarenundefined 1 Reply Last reply Reply Quote 0
              • Bewarenundefined
                Bewaren @dc42
                last edited by

                @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

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                • Bewarenundefined
                  Bewaren
                  last edited by

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

                  dc42undefined 1 Reply Last reply Reply Quote 0
                  • dc42undefined
                    dc42 administrators @Bewaren
                    last edited by

                    @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.

                    Duet WiFi hardware designer and firmware engineer
                    Please do not ask me for Duet support via PM or email, use the forum
                    http://www.escher3d.com, https://miscsolutions.wordpress.com

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                    • Bewarenundefined
                      Bewaren
                      last edited by

                      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

                      dc42undefined 1 Reply Last reply Reply Quote 0
                      • dc42undefined
                        dc42 administrators @Bewaren
                        last edited by

                        @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.

                        Duet WiFi hardware designer and firmware engineer
                        Please do not ask me for Duet support via PM or email, use the forum
                        http://www.escher3d.com, https://miscsolutions.wordpress.com

                        Bewarenundefined 1 Reply Last reply Reply Quote 0
                        • Bewarenundefined
                          Bewaren @dc42
                          last edited by

                          @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?

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                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

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

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • Bewarenundefined
                              Bewaren
                              last edited by

                              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

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                              • Bewarenundefined
                                Bewaren
                                last edited by

                                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.

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                                • Phaedruxundefined
                                  Phaedrux Moderator
                                  last edited by

                                  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?

                                  Z-Bot CoreXY Build | Thingiverse Profile

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                                  • Bewarenundefined
                                    Bewaren
                                    last edited by

                                    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!

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