I like to size power supplies around 2x actual radio current draw, to allow for inrush current when everything gets powered up at once.
From: AF <af-boun...@af.afmug.com> On Behalf Of Mathew Howard Sent: Wednesday, December 12, 2018 6:15 PM To: AFMUG <af@af.afmug.com> Subject: Re: [AFMUG] Packetflux noob I imagine it would probably be fine, since that's max load, and not what it's typically going to be using, but 120 watts on a 120 watt power supply is a bit closer than I'd want things to be. I assume your using a rack injector, which if I remember correctly, lets you use any power input on any of the ports (regardless of what card they're on), so why not use all three power supplies? On Wed, Dec 12, 2018 at 2:24 PM Ryan Ray <ryan...@gmail.com <mailto:ryan...@gmail.com> > wrote: Would like to tag on this, I've sent this off to packeflux support as well but maybe the crowd can tell me if this is good. I would like to power the following. 1 – PMP450i (5ghz) 2 – PMP450m (5ghz) 1 – PTP820S (18ghz) 1 – Mimosa B24 (24ghz) I’ve got two “Cambium Sync for 450i / 450m” boards. I’ve also got three 48v 2.5A 120w,c8 power supplies. Can I plug in two of the 48v 2.5A power supplies, then configure Card 1 – 1st power supply – pmp450m, pmp450i, mimosa b24 Card 2 – 2nd power supply – pmp450m, PTP820s PMP450m – 70W typical, 80W peak PMP450i – 15W typical, 25W max PTP820S – 35W Mimosa B24 – 19.5W max So looking at the power supply, it can do 120w If I do the way I want we would be looking at 120W for the first power supply and then 105W for card two. Would this be enough power do you think? Seems like I'm right up against the limits trying to power everything with two power supplies. -48v isn't an option at this site. Just want to make sure I’m not doing anything strange or out of the ordinary here. On Wed, Oct 3, 2018 at 4:50 PM Mathew Howard <mhoward...@gmail.com <mailto:mhoward...@gmail.com> > wrote: That's kind of surprising that an old 450 AP ran for a couple of days on 48v before it died... I would've expected it to die right away. It would be very nice if everything would just run on either voltage... the ePMP 1000 GPS radios do, and an AF5x does (unless it's one of the very first ones to ship... then it's 24v only), but I think that's about all that does. Pretty much anything that does Gigabit PoE will take either polarity, so that at least simplifies things a little bit (but using the wrong PoE pinout can screw up sync over power... so there's that). On Wed, Oct 3, 2018 at 11:06 AM Ken Hohhof <af...@kwisp.com <mailto:af...@kwisp.com> > wrote: There are lots of choices. For DIN rail, I keep the Traco 360W units in stock, use them with or without the BMU depending on whether it’s an AC or DC site. For non DIN rail, I keep Mean Well 150W and 300W HRP series in stock. Most stuff is going to 48V, so I’m building DC sites as 48V now. Small DC-DC for 24V if needed, more and more not needed. And of course whenever we say 48V, the equipment needs to actually accept up to at least 60V. It’s starting to drive me crazy when I want to add a sector at a site and realize the existing sectors are 24V but the new one will have to be 48V. The RackInjectors and PowerInjectors handle this nicely, but it’s a recipe for disaster and a source of confusion. I’ve already fried a 450 AP at a tower with mixed vintage equipment, because I thought it was a 450i and I powered it with 48V. It ran for a couple days and then died. Techs keep questioning me when I say an AF5x or a Nanostation ac takes 24V. I understand the confusion, you don’t expect 24V on a Gigabit POE. What would really make sense is if equipment would accept either voltage, and either polarity. OK, not possible with high current draw radios like a Medusa or an AF11, but it would be nice on a Nanostation. From: AF <af-boun...@af.afmug.com <mailto:af-boun...@af.afmug.com> > On Behalf Of Forrest Christian (List Account) Sent: Wednesday, October 3, 2018 10:28 AM To: AnimalFarm Microwave Users Group <af@af.afmug.com <mailto:af@af.afmug.com> > Subject: Re: [AFMUG] Packetflux noob I have the new 3.65 medusa on my mind.... plus I'm a bit tired. The 48V 2.5A power supplies will run 2 non 3.65 medusa radios each. If you jumper the boards so 2 radios run off of each power supply you'll be fine (the AF24 is a similar quantity of power). But, a bulk supply is probably a better idea if you can find one in your right form factor. On Wed, Oct 3, 2018 at 8:07 AM Eric Muehleisen <ericm...@gmail.com <mailto:ericm...@gmail.com> > wrote: I've been using CTM2's for nearly a decade, but they do not support 450m. CMM5 is waaay to expensive for what it does and is clunky. I've been looking at Packetflux's RackInjector's. I'm not familiar with PacketFlux products and need clarity on something. See attached. I need to power (3) 450m AP's and a(1) AF24. I also need physical spares for each unit. Is the attached parts list correct or am I missing something? Thanks! -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Forrest Christian CEO, PacketFlux Technologies, Inc. Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 <mailto:forre...@imach.com> forre...@imach.com | <http://www.packetflux.com/> http://www.packetflux.com <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> <http://twitter.com/@packetflux> -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list AF@af.afmug.com <mailto:AF@af.afmug.com> http://af.afmug.com/mailman/listinfo/af_af.afmug.com
-- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
