I think we must be looking at different models. The spec sheet for the BCMU360 says it has a jumper to select between 48v and 24v, and it connects to a 12v battery.
On Tue, Jan 30, 2018 at 12:33 PM, Adam Moffett <dmmoff...@gmail.com> wrote: > You're mistaken, or the spec sheet is misleading. > They sell a 24V or 48V model. They do sell 12V batteries as an accessory, > but you use two of them for the 24V or four for the 48V. > > > ------ Original Message ------ > From: "Mathew Howard" <mhoward...@gmail.com> > To: "af" <af@afmug.com> > Sent: 1/30/2018 1:30:53 PM > Subject: Re: [AFMUG] Traco BCM > > No, it can't get battery voltage... the BCMU360 uses a 12v battery - it > has to be upconverting to 44v, and if that's the case, why 44v instead of > 48v? > > I was just looking at an ePMP 2000 AP I have sitting here, and it lists > the minimum voltage as 42.5v, so that doesn't leave much room for voltage > drop. > > On Tue, Jan 30, 2018 at 12:25 PM, Adam Moffett <dmmoff...@gmail.com> > wrote: > >> When running on battery, the load gets battery voltage. The load being >> on battery (or charger) voltage seems to be the normal behavior for these >> types of systems, so you'd have to really hunt for something that does it >> differently. >> >> You can hunt for something with a regulated output, or add a DC-DC >> converter inline. >> >> I haven't yet encountered a 48V device that didn't accept the whole range >> from "batteries nearly dead" to "bulk charging", so I'm wondering what that >> device is that needs >46v. >> >> .....and I'm not a Traco lover. I'm kind of disappointed with it >> actually. We must have bought 40 of those kits about 3 years ago, and we >> now have 3 faulty BCM modules....they work except they no longer charge >> batteries. I also received a whole box of them where the sticker >> indicating which pin does what on the BCM was 100% backwards. By following >> the sticker rather than the manual I ended up with the temperature sensor >> (thermistor) connected to the reset switch. Didn't break anything, but >> they units won't turn on that way. >> >> At the time I needed something 48V at a higher wattage than Meanwell's >> 48V options, and Traco was suggested. I don't think I'd go there again. >> >> >> ------ Original Message ------ >> From: "Paul McCall" <pa...@pdmnet.net> >> To: "af@afmug.com" <af@afmug.com> >> Sent: 1/30/2018 12:59:12 PM >> Subject: [AFMUG] Traco BCM >> >> Am I missing something or are the Traco BCM series not very usable in the >> real world? >> >> >> >> Meaning, the BCMU360 can only put out 45v (for a couple minutes, then 44v >> and change), when running on the battery. Not very usable with some gear >> that requires about 46v to work properly. Add in voltage drop on a long >> run and no-go. >> >> >> >> I thought maybe the straight BCM 48v series would be better, but they >> appear to have the same spec. >> >> >> >> I have to think I am missing something or who the heck would they sell >> these to? The industry standard is 48v (54v with float) so, outputting 44v >> sustained seems dumb. >> >> >> >> Or is me 😊 >> >> >> >> Enlighten me please, you Traco lovers >> >> >> >> Paul McCall, President >> >> PDMNet, Inc. / Florida Broadband, Inc. >> >> 658 Old Dixie Highway >> <https://maps.google.com/?q=658+Old+Dixie+Highway%0D+Vero+Beach,+FL+32962%0D+772&entry=gmail&source=g> >> >> Vero Beach, FL 32962 >> <https://maps.google.com/?q=658+Old+Dixie+Highway%0D+Vero+Beach,+FL+32962%0D+772&entry=gmail&source=g> >> >> 772-564-6800 <(772)%20564-6800> >> >> pa...@pdmnet.net >> >> www.pdmnet.com >> >> www.floridabroadband.com >> >> >> >> >> >> >
