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. >> >> >> >> >> >> >
