On Friday 16 July 2021 15:33:23 Alan Condit wrote: > Chris, > > The unit doesn’t seem to be warm. > I adjusted the voltage down to 42 volts, to provide some headroom. I > am using KL5056 stepper drivers and they say max 50 volts. There is > definitely power to the fan because if I try to turn it it snaps back > to the fixed position. The voltage is rock steady at 42 volts. > > I wonder if it is just the fan or fan controller that is bad. > > I bought the power supply a year or so ago but this is the first time > I have applied power to it. Maybe I will have to open it up and see if > I could replace the fan. > > Alan > That rather sounds like a good idea, Alan. From your description it sounds like the motors own hal effect commutation circuit has died. That is typically buried someplace in the motor, so if it has voltage, but is not running, and the motor itself may be hot, its probably time for a new fan. Call it infant mortality.
> > From: Chris Albertson <albertson.ch...@gmail.com> > > Subject: Re: [Emc-users] Meanwell SE600-48 Power Supply > > Date: July 15, 2021 at 12:21:10 PM CDT > > To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> > > > > > > If you place your hand on the power supply and feel no heat, then > > I'd expect the fan to be off. > > > > I some a good size power resistors mounted to a heat sink with a fan > > that I used for testing power supplies. Testing with no dummy load > > is not very meaningful. The load is set up so it can be quickly > > rewired with resistors in series or parallel in different ways using > > a terminal block. > > > > On Thu, Jul 15, 2021 at 9:19 AM Alan Condit <condit.a...@gmail.com> 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 > > > > -- > > > > Chris Albertson > > Redondo Beach, California > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
