• Tags
  • Documentation
  • Order
  • Register
  • Login
Duet3D Logo Duet3D
  • Tags
  • Documentation
  • Order
  • Register
  • Login

Upgrade to 3.2.2 fan running full speed

Scheduled Pinned Locked Moved
Duet Hardware and wiring
6
11
359
Loading More Posts
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • undefined
    Joel
    last edited by 7 Mar 2021, 18:06

    Hi,

    On my Duet2 WiFi, I just upgraded from 3.1.1 to 3.2.2. After the upgrade a fan I mounted for the stepper drivers ( fan2 port ) started running full speed.

    I put the fan in and never configured it, so it ways off. Now with 3.2.2, I had to configure the fan and I just gave it a fixed speed.

    Question is, is there an onboard sensor ( or from the drivers themselves ) that reports driver temperature?

    I figure as long as I now have the fan configured and running, I would like to make it ramp up with driver temperature if possible.

    Doable?

    Thanks
    Joel

    undefined 1 Reply Last reply 7 Mar 2021, 18:16 Reply Quote 0
    • undefined
      Veti
      last edited by 7 Mar 2021, 18:14

      post your config

      1 Reply Last reply Reply Quote 0
      • undefined
        fcwilt @Joel
        last edited by fcwilt 3 Jul 2021, 19:12 7 Mar 2021, 18:16

        @Joel said in Upgrade to 3.2.2 fan running full speed:

        Question is, is there an onboard sensor ( or from the drivers themselves ) that reports driver temperature?

        I asked about a new board, a Duet 3 Mini 5, and was told there was no built-in sensor.

        They suggested I use a thermistor attached to one of the driver chips.

        Frederick

        Printers: a small Utilmaker style, a small CoreXY and a E3D MS/TC setup. Various hotends. Using Duet 3 hardware running 3.4.6

        1 Reply Last reply Reply Quote 0
        • undefined
          Joel
          last edited by 7 Mar 2021, 19:11

          Here is the fan config, but it's pretty irrelevant. The question is not about fan setup, but if there is a built in sensor that can be used. That answer seems to be no .

          M950 F2 C"fan2" Q500
          M106 P2 S.2 H-1 ; Fan speed fixed at .2

          Thanks
          Joel

          undefined 1 Reply Last reply 7 Mar 2021, 19:20 Reply Quote 0
          • undefined
            droftarts administrators @Joel
            last edited by 7 Mar 2021, 19:20

            @Joel not on the drivers, though they report when over temperature. On Duet 2 you can monitor MCU temp and have a fan set up on that.

            @fcwilt see https://duet3d.dozuki.com/Wiki/Calibrating_the_CPU_temperature?revisionid=HEAD#Section_mcu_temp_in_Duet3_Mini5

            Ian

            Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

            1 Reply Last reply Reply Quote 0
            • undefined
              Joel
              last edited by Joel 3 Jul 2021, 19:26 7 Mar 2021, 19:25

              @droftarts

              I did think of that, but I notice my MCU just never gets hot and I think it is too far removed from the drivers.

              @fcwilt

              If I ever open up my controller case, it would not be horrible to glue a thermistor to one of the drivers.

              Thanks

              undefined 1 Reply Last reply 7 Mar 2021, 20:51 Reply Quote 1
              • undefined
                droftarts administrators @Joel
                last edited by 7 Mar 2021, 20:51

                @Joel the stepper drivers use the ground plane of the Duet as a heat sink, as does the MCU, so the temperature of the MCU is a reasonable guide to the temperature of the drivers. However, for Duet 2 WiFi, you’re unlikely to need extra cooling unless your board is in a tight enclosure and/or you run the stepper drivers close to their current limit.

                For cooling recommendations, see https://duet3d.dozuki.com/Wiki/Hardware_Overview#Section_Cooling

                Ian

                Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

                1 Reply Last reply Reply Quote 0
                • undefined
                  Phaedrux Moderator
                  last edited by 7 Mar 2021, 20:58

                  For what it's worth, as long as you have some air flow and aren't using max current, you're probably just fine.

                  Z-Bot CoreXY Build | Thingiverse Profile

                  1 Reply Last reply Reply Quote 0
                  • undefined
                    deckingman
                    last edited by 7 Mar 2021, 21:59

                    ....and one more "for what it's worth", I did in fact stick a bead thermistor onto one of the driver chips on my Duet Ethernet board and used it to control a fan blowing air on to the back of the board. I can't remember exactly what temperature range I used but it was something like start to turn at 40 Deg C ramping up to fully on at 80. The fan hardly ever came on and when it did, only very slowly. Even when printing at crazy speeds of up to 300mm/sec usiing motor currents of 1.8Amps. The board was vertically mounted and had plenty of space around it with lots of slats, so YMMV.

                    Ian
                    https://somei3deas.wordpress.com/
                    https://www.youtube.com/@deckingman

                    1 Reply Last reply Reply Quote 1
                    • undefined
                      Joel
                      last edited by 7 Mar 2021, 23:02

                      Well, sounds like I will just leave it at a fixed value ( quiet ) and not worry about it. I have been running it for over a year with the fan off, never had a problem.

                      Thanks

                      undefined 1 Reply Last reply 8 Mar 2021, 08:09 Reply Quote 0
                      • undefined
                        deckingman @Joel
                        last edited by 8 Mar 2021, 08:09

                        @Joel.......and yet one more "for what it's worth". When I converted to Duet 3, I never got around to setting up the fan I fitted behind the main board. This one runs Nema 23s at 2.4 amps as is necessary to throw my 3Kg extruder gantry around. During testing, I periodically checked the driver chips with a finger tip and they barely got above ambient. So the fan still sits behind the board but I've never got around to connecting it. The board is open and not in an enclosed case so YMMV.

                        Ian
                        https://somei3deas.wordpress.com/
                        https://www.youtube.com/@deckingman

                        1 Reply Last reply Reply Quote 0
                        8 out of 11
                        • First post
                          8/11
                          Last post
                        Unless otherwise noted, all forum content is licensed under CC-BY-SA