Re: [WISPA] Another Ubiquity question

[Blair Davis]

The diode thing works fine IF you use the right diodes. For running a UBNT 24V device off a 24V battery floating on a charger, try 4x 1n4001 dioeds in series.  will drop about 3V and carry 1A Works fine for me. That set of diodes will only carry one UBNT radio.  Need a separate set for each radio. On 10/15/2012 4:38 PM, Josh Luthman wrote: I tried that method.  Diode got hotter than hell.  Burnt right through the insulation I covered it with (and since it was bent the jacket came right off). Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mon, Oct 15, 2012 at 4:22 PM, Jeromie Reeves <jree...@18-30chat.net> wrote: Why not run the NSM5 on 24v? Just add a diode or two to the + side, the 1v drop on them will protect the NSM from the charge voltage of the bank. $2 fix On Mon, Oct 15, 2012 at 10:44 AM, Olufemi Adalemo <adal...@gmail.com> wrote: > It just dawned on me that I may have been barking up the wrong tree > I only have the one NSM5 to connect, I could hook this up to the parallel > segment of my battery bank and get only 12v while the rest of the > installation that's connected in series gets 24v. Do you think this will > work? Don't really have to worry about the NSM5 running down the battery > cause load is low and the cable run is under 10m so the voltage drop from > 12v will be negligible > > So this is how it would be: > 24v solar panel connected to 24v charge controller with 4 x 12v batteries > connected in a 2x2 series/parallel array. cable connected to the parallel > segment of battery bank (theoretically giving 12v to the NSM5), rest of the > load connected to the charge controller at 24v > > What do you think? > > - - - > Olufemi Adalemo > M: +234-803-5610040 > M: +234-809-8610040 > f...@adalemo.com > > > > > On Fri, Oct 12, 2012 at 8:18 PM, Kristian Hoffmann <kh...@fire2wire.com> > wrote: >> >> Ya, it should be +24 on pins 4,5 and -24/comm on 7,8.  If it blew up then >> there was probably a short somewhere. >> >> -Kristian >> >> >> On 10/12/2012 11:11 AM, Olufemi Adalemo wrote: >> >> Ah ok, it is possible that the guys didn't get the polarity right >> I will check though they swear that they did >> >> >> - - - >> Olufemi Adalemo >> M: +234-803-5610040 >> M: +234-809-8610040 >> f...@adalemo.com >> >> >> >> >> On Fri, Oct 12, 2012 at 7:05 PM, Josh Luthman >> <j...@imaginenetworksllc.com> wrote: >>> >>> What voltage were the batteries spitting out?  They charge at 27v but >>> without a charger put out much closer to 24v until they begin discharging. >>> If it fried the radio I would first think that it was connected wrong, not >>> that the voltage was too high. >>> >>> Josh Luthman >>> Office: 937-552-2340 >>> Direct: 937-552-2343 >>> 1100 Wayne St >>> Suite 1337 >>> Troy, OH 45373 >>> >>> >>> On Fri, Oct 12, 2012 at 2:02 PM, Olufemi Adalemo <adal...@gmail.com> >>> wrote: >>>> >>>> What's your typical config for the NSM5? >>>> Some of my guys just tried to power one off a 24v battery bank (no >>>> charger connected just battery) and it fried good >>>> >>>> - - - >>>> Olufemi Adalemo >>>> M: +234-803-5610040 >>>> M: +234-809-8610040 >>>> f...@adalemo.com >>>> >>>> >>>> >>>> >>>> On Fri, Oct 12, 2012 at 6:56 PM, Kristian Hoffmann <kh...@fire2wire.com> >>>> wrote: >>>>> >>>>> We have MT and Ubnt equipment of all shapes and sizes running at 27.6V. >>>>> The only problems we've had are a handful of freak RB411s that won't power >>>>> on with >27V.  Most of the older ones wouldn't kick into overvoltage >>>>> protection until >28V, but we've come across a few odd balls. >>>>> >>>>> -Kristian >>>>> >>>>> >>>>> On 10/12/2012 10:44 AM, Josh Luthman wrote: >>>>> >>>>> Charger isn't going to spit out 24v for batteries that need charged, >>>>> it's usually 27v. >>>>> >>>>> I was under the impression they would simply lock up and you could >>>>> reboot, or maybe I'm just thinking of MT. >>>>> >>>>> Josh Luthman >>>>> Office: 937-552-2340 >>>>> Direct: 937-552-2343 >>>>> 1100 Wayne St >>>>> Suite 1337 >>>>> Troy, OH 45373 >>>>> >>>>> >>>>> On Fri, Oct 12, 2012 at 10:08 PM, Olufemi Adalemo <adal...@gmail.com> >>>>> wrote: >>>>>> >>>>>> Aha, thanks >>>>>> That explains why I have a dead NSM5 on my desk >>>>>> I guess the charge controller is not very good at giving out 24v >>>>>> regulated power >>>>>> >>>>>> - - - >>>>>> Olufemi Adalemo >>>>>> M: +234-803-5610040 >>>>>> M: +234-809-8610040 >>>>>> f...@adalemo.com >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Fri, Oct 12, 2012 at 6:17 PM, Josh Luthman >>>>>> <j...@imaginenetworksllc.com> wrote: >>>>>>> >>>>>>> Yes you will.  The batteries will probably be around 27v which Ubnt >>>>>>> won't like.  You'll need to clean the ~18-27v from the batteries to 24v. >>>>>>> >>>>>>> Josh Luthman >>>>>>> Office: 937-552-2340 >>>>>>> Direct: 937-552-2343 >>>>>>> 1100 Wayne St >>>>>>> Suite 1337 >>>>>>> Troy, OH 45373 >>>>>>> >>>>>>> >>>>>>> On Fri, Oct 12, 2012 at 1:14 PM, Olufemi Adalemo <adal...@gmail.com> >>>>>>> wrote: >>>>>>>> >>>>>>>> Need help, >>>>>>>> I'm looking to deploy a UBNT NSM5 powered by a 24v solar supply. >>>>>>>> Does anyone have experience with this? The data sheet shows that it >>>>>>>> requires a 24v supply however the POE injector supplied is 15v, do I need a >>>>>>>> DC to DC converter? >>>>>>>> >>>>>>>> Best regards, >>>>>>>> - - - >>>>>>>> Olufemi Adalemo >>>>>>>> M: +234-803-5610040 >>>>>>>> M: +234-809-8610040 >>>>>>>> f...@adalemo.com >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> Wireless mailing list >>>>>>>> Wireless@wispa.org >>>>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>>>> >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> Wireless mailing list >>>>>>> Wireless@wispa.org >>>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>>> >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> Wireless mailing list >>>>>> Wireless@wispa.org >>>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>>> >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Wireless mailing list >>>>> Wireless@wispa.org >>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Wireless mailing list >>>>> Wireless@wispa.org >>>>> http://lists.wispa.org/mailman/listinfo/wireless >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Wireless mailing list >>>> Wireless@wispa.org >>>> http://lists.wispa.org/mailman/listinfo/wireless >>>> >>> >>> >>> _______________________________________________ >>> Wireless mailing list >>> Wireless@wispa.org >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >> >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> >> _______________________________________________ >> Wireless mailing list >> Wireless@wispa.org >> http://lists.wispa.org/mailman/listinfo/wireless >> > > > _______________________________________________ > Wireless mailing list > Wireless@wispa.org > http://lists.wispa.org/mailman/listinfo/wireless > _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless -- West Michigan Wireless ISP Allegan, Michigan 49010 269-686-8648 A Division of: Camp Communication Services, INC

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