We used to need both 24VDC (for FSK and old MT) and 48VDC at most sites, but now we only deploy 48VDC at newer sites. If we do need 24V for whatever reason, we typically use a Netonix switch that can output 24V via PoE.
What are you using on new sites that requires 24V? On Mon, Jan 29, 2018 at 4:40 PM, Mathew Howard <mhoward...@gmail.com> wrote: > Yeah, the lack of a 48v version of the DR-UPS was one of the problems I > ran into too... my fix was to use a 24v to 48v DC converter. Pretty much > every site ends up needing both 48v and 24v anyway, so unless you do a > complete DC plant for each voltage, you're going to end up needing some > kind of a converter one way or the other anyhow, and that way you can do > two batteries instead of four. Only problem being I haven't found a nice > DIN rail 24v-48v converter (the meanwell one does the job fine, it's just > not a proper DIN mount device). > > So the way I'm leaning for new sites is to do a nice big Meanwell DIN > mount 24v power supply, with a DR-UPS and and a 24v to 48v DC converter, > connected to two PacketFlux PDUs (one for 48v and one for 24v). That gives > me five remotely controllable power outputs for each voltage that I can use > to power whatever routers, switches, PoE injectors, or whatever I need. And > there are contacts on those power supplies that can be connected to the > Packetflux Base for monitoring purposes. > > Might be able to do things a bit more cleanly with a Rackinjector too... I > haven't had time to play with that much yet though. > > On Mon, Jan 29, 2018 at 9:32 AM, Josh Baird <joshba...@gmail.com> wrote: > >> Yeah - the lack of a 48VDC UPS from Meanwell is annoying. For small-ish >> sites, we have been running a Meanwell/Traco hybrid using the SDR-240-48 >> and a Traco TSP-BCM48A or BCMU360. >> >> On Mon, Jan 29, 2018 at 10:29 AM, Adam Moffett <dmmoff...@gmail.com> >> wrote: >> >>> There's a lot to like about that setup. The DR-UPS can do 40amp on 24v, >>> so your upper limit is almost 1kW. Just drive it with a bigger 24v supply >>> as needed. >>> >>> What has held me back from that in the past is the DR-UPS is not >>> available in 48v, and the biggest power consumers I have are 48V. I went >>> to Traco to stay 48V. OTOH your rig is so much cheaper than Traco that >>> adding an RSD-300B-48 for another $100 is not a bad deal. >>> >>> >>> ------ Original Message ------ >>> From: "David Coudron" <david.coud...@advantenon.com> >>> To: "af@afmug.com" <af@afmug.com> >>> Sent: 1/28/2018 10:39:56 PM >>> Subject: Re: [AFMUG] Dc plant conversion >>> >>> Here is what we are doing, I think this is close to what Steve is asking >>> for: >>> >>> >>> >>> Meanwell SDR-240-24 AC to DC power source: $84 >>> >>> Meanwell DR-UPS40 Battery Float/UPS: $37 >>> >>> Tycon TPDIN MonitorWeb2: $131 >>> >>> 24 V of battery backup $70-120 depending on the runtime looking for >>> >>> Netonix 150 W or 250 DC switch: $250-350 (This is really the only >>> expensive component) >>> >>> Heater: $65 >>> >>> Fan: $14 >>> >>> >>> >>> With this, we can run 5-8 hours on very small batteries, we figure we >>> have several hours to get a generator to the site if power isn’t coming >>> back. We run all POE from the Netonix, it works really well. Here are >>> the other things we can do with the box: >>> >>> 1. Monitor temp in the cabinet >>> 2. Monitor/alert on loss of AC line power through TP DIN >>> 3. Monitor voltage of the batteries >>> 4. Monitor voltage to the Netonix >>> 5. Monitor Current to the Netonix >>> 6. Monitor Current in/out of the batteries >>> 7. Auto start the heater below 40 degrees >>> 8. Auto start the fan above 80 degrees >>> 9. Power cycle the netonix from the TP DIN >>> 10. Power cycle any AP, Router, Backhaul from the Netonix >>> >>> >>> >>> We also put a Mikrotik router in this cabinet. Usually a Hex POE (for >>> small sites) or a 3011 for larger sites. >>> >>> >>> >>> We have 13 in the field set up like this and are going 15 more right >>> now. While it might be a little more than what you were thinking, it >>> gives us a ton of control for pretty minimal investment per site. >>> >>> >>> >>> Best part is, no coding necessary. Doing all this with the Monitor Web2 >>> settings and/or SNMP. Let me know if you are interested in pictures. >>> For this second batch we have started using Terminal blocks to clean up the >>> wiring, the cabinets look a little better, but we went to a smaller poly >>> cabinet that makes things a little tight. >>> >>> >>> >>> Regards, >>> >>> >>> >>> David Coudron >>> >>> >>> >>> *From:* Af [mailto:af-boun...@afmug.com] *On Behalf Of *Carl Peterson >>> *Sent:* Saturday, January 27, 2018 5:39 PM >>> *To:* af@afmug.com >>> *Subject:* Re: [AFMUG] Dc plant conversion >>> >>> >>> >>> You can still do DC-DC off it and then hook up netonix. If I had to do >>> it now I'd go with the IDC switch. When we did our design, the idc didn't >>> exist so we just went down to 24V off of our A and B sides and run a >>> redundant powered 24V bus which all the netonix switches run on. >>> >>> >>> >>> I better buy up another batch of Elteks before all y'all buy them all >>> up. These are mostly decommissioned Sprint/Clearwire btw. >>> >>> >>> On Jan 27, 2018, at 1:02 PM, Josh Baird <joshba...@gmail.com> wrote: >>> >>> A 12 port version would be nice. Looks like the 26 port version is $600. >>> >>> >>> >>> On Sat, Jan 27, 2018 at 12:59 PM, Gino A. Villarini <g...@aeronetpr.com> >>> wrote: >>> >>> Used to, now with the IDC model is not needed (isolated dc)… >>> >>> >>> >>> *From: *Af <af-boun...@afmug.com> on behalf of Josh Baird < >>> joshba...@gmail.com> >>> *Reply-To: *"af@afmug.com" <af@afmug.com> >>> *Date: *Saturday, January 27, 2018 at 1:51 PM >>> *To: *"af@afmug.com" <af@afmug.com> >>> *Subject: *Re: [AFMUG] Dc plant conversion >>> >>> >>> >>> Which Netonix are you running at - 48V? Or are you using an isolated >>> DC/DC converter in between the -48V rectifier and Netonix? >>> >>> >>> >>> On Sat, Jan 27, 2018 at 12:49 PM, Gino A. Villarini <g...@aeronetpr.com> >>> wrote: >>> >>> Refurb/ used Eltek/Valere –48 Rectifier shelf off Ebay ~$400 + 1 >>> Netonix IDC Switch $400… all done. You can power 90% of WISP gear >>> >>> >>> >>> *From: *Af <af-boun...@afmug.com> on behalf of Steve Jones < >>> thatoneguyst...@gmail.com> >>> *Reply-To: *"af@afmug.com" <af@afmug.com> >>> *Date: *Friday, January 26, 2018 at 9:49 PM >>> *To: *"af@afmug.com" <af@afmug.com> >>> *Subject: *[AFMUG] Dc plant conversion >>> >>> >>> >>> Any of you folks who know both dc plant and even more know small wisp >>> budget interested in looking at our gear and power setup and giving >>> realistic advice that doesnt have a 10 different 500 dollar components >>> combined with a full time linux guy and a full time coder? >>> >>> >>> >>> Id love you to do it out of the kindness of your heart, but i do have >>> some advisory busget. >>> >>> >>> >>> Im just tired of the apc ups waste and super ghetto runtimes on >>> batteries coupled with having to accept we are destroying runtimes by >>> letting the apcs die..... please, somebody, please. Otherwise i have to go >>> to the facebook groups, and thats like going to a mikrotik or ubnt forum. >>> >>> >>> >>> >>> >>> >> >
