Is it a 3-wire fan? The yellow wire on those fans is a reverse-acting PWM control line (0 = full on, 90% = 10% on, etc.). It’s possible that the controller turns off the fan when it doesn’t need cooling.
> On Jul 19, 2021, at 8:50 AM, Alan Condit <condit.a...@gmail.com> wrote: > > Gene, Chris, Milosz and everybody who has tried to help, > > I am reposting this because I screwed up earlier and failed to change the > Subject line. > > I took the power supply out of the controller cabinet and set it up on the > bench. I used a small screw driver to turn the fan a few times, then I turned > it on and the fan ran. Like Milosz said it was loud. I turned it off and > turned it back on again and the fan ran, Great problem fixed (yeah, right). I > put it back in the cabinet and turned it on (silence). So I will take it back > out of the cabinet and see if I can get it to run and start reliably after a > period of rest. Otherwise it looks like replacing the fan is the answer. > > Thanks all, > Alan > >> >> From: Dave Cole <linuxcncro...@gmail.com> >> Subject: Re: [Emc-users] Meanwell SE600-48 Power Supply >> Date: July 15, 2021 at 6:33:23 PM CDT >> To: emc-users@lists.sourceforge.net >> >> >> You may have a bad power supply. Do you have any output voltage? >> I'd attach a load and see if it holds voltage. I cant think of anything >> that should be clicking in there. Arcing can sound like clicking. >> >> The spec sheet says nothing about fan control and I would expect they would >> flaunt that feature if they had it. >> https://www.meanwell.com/productPdf.aspx?i=469#1 >> >>> On 7/15/2021 12:16 PM, Alan Condit wrote: >>> I am building a new controller cabinet. I installed a Meanwell SE600-48 >>> power supply. When I turn on the power supply the fan doesn’t turn on. If I >>> leave the power supply on for a little while I hear an intermittent >>> clicking (like a relay) but no fan. Does it have some kind of temperature >>> control on the fan? Is it not turning on because I currently have virtually >>> no load on the power supply? >>> >>> Thanks, >>> Alan >>> >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> >> >> >> From: Nicklas SB Karlsson <n...@nksb.eu> >> Subject: Re: [Emc-users] Meanwell SE600-48 Power Supply >> Date: July 16, 2021 at 5:37:56 AM CDT >> To: "Enhanced Machine Controller \(EMC\)" <emc-users@lists.sourceforge.net> >> >> >>> I am building a new controller cabinet. I installed a Meanwell SE600-48 >>> power supply. When I turn on the power supply the fan doesn’t turn on. If I >>> leave the power supply on for a little while I hear an intermittent >>> clicking (like a relay) but no fan. Does it have some kind of temperature >>> control on the fan? Is it not turning on because I currently have virtually >>> no load on the power supply? >> >> Short circuit? Or overloaded? >> >> Some power supplys enter som kind of "power down" mode if overloaded. >> >> >> Nicklas Karlsson > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
