I have done this at home with a Pico M2HP. My setup has two 60w 12v solar panels connected to a charge controller with 2 12v 55AH AGM batteries in parallel. The Pico is connected to the load output of the charge controller with a DC input POE injector that I bought from Amazon for about $10.
The setup works pretty good and I've had my first true test of the battery bank this past month. Its rained here every day for the last three weeks. --Eric Roth Network Engineer Webjogger Internet Services (845) 757-4000 www.webjogger.net From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Josh Luthman Sent: Monday, October 15, 2012 1:51 PM To: WISPA General List Subject: Re: [WISPA] Another Ubiquity question ~12v should be OK by specs, but I've never heard of anyone doing such a "low" voltage to a Ubnt device. Not sure if no ones tried it or it just ended quickly in failure. Just be aware that 24v and 12v batteries have a higher voltage for charging. Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mon, Oct 15, 2012 at 1:44 PM, 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 <tel:%2B234-803-5610040> M: +234-809-8610040 <tel:%2B234-809-8610040> 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 <tel:%2B234-803-5610040> M: +234-809-8610040 <tel:%2B234-809-8610040> 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 <tel:%2B234-803-5610040> M: +234-809-8610040 <tel:%2B234-809-8610040> 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 <tel:%2B234-803-5610040> M: +234-809-8610040 <tel:%2B234-809-8610040> 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 <tel:%2B234-803-5610040> M: +234-809-8610040 <tel:%2B234-809-8610040> 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
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