It works from like 6-56 volts. -48 is a ways away from that...
Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mon, Mar 20, 2017 at 1:17 PM, Adam Moffett <[email protected]> wrote: > I think it draws current from whichever port has the higher voltage. > If you did +24 and -48 I bet that would be bad. > > > > ------ Original Message ------ > From: "Chuck McCown" <[email protected]> > To: [email protected] > Sent: 3/20/2017 1:09:30 PM > Subject: Re: [AFMUG] Sitemonitor question - different voltages > > I am talking about pwr1 and pwr2. For some reason I thought they had to > both be the same. > > *From:* Josh Luthman > *Sent:* Monday, March 20, 2017 11:08 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Sitemonitor question - different voltages > > Of course. You'll also be able to monitor both at the same time. > > Conversely an RB750 will only report the highest of the two voltages. > > > Josh Luthman > Office: 937-552-2340 <(937)%20552-2340> > Direct: 937-552-2343 <(937)%20552-2343> > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > On Mon, Mar 20, 2017 at 1:01 PM, Chuck McCown <[email protected]> wrote: > >> Can you mix 24 and 48 volts on the same unit? >> >> *From:* Josh Luthman >> *Sent:* Monday, March 20, 2017 10:58 AM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] Sitemonitor question - different voltages >> >> Base1 has been gone for like 3-4 years or something...there's no way Paul >> would get one these days. >> >> >> Josh Luthman >> Office: 937-552-2340 <(937)%20552-2340> >> Direct: 937-552-2343 <(937)%20552-2343> >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >> >> On Mon, Mar 20, 2017 at 11:03 AM, George Skorup <[email protected] >> > wrote: >> >>> Be careful connecting +48VDC to a SiteMonitor. Verify it's a Base-II >>> first. The old Base-I's are limited to 30 or 32VDC on both inputs. >>> >>> I typically connect the pwr1 input to my main rail, usually 24-28VDC so >>> it's safe for Base-I's or Base-II's. I've been recycling a lot of old >>> Base-I's from site rebuilds the last year or so. Pwr2 gets the wall brick >>> for utility monitoring. I try to dig out old SyncPipe power supplies if I >>> can find them because they're linear. We're at many towers with crappy >>> power, or those 3-phase sites that lose a phase and we end up with <100VAC >>> and our UPS transfers to battery. Most switching bricks will operate down >>> to 80-85VAC. Has happened more times that I can remember. Site goes down >>> because the batteries ran down, yet we never got a utility power alarm. The >>> linear brick lets you see the voltage situation. Problem is, they're >>> getting pretty hard to find now. >>> >>> On 3/20/2017 7:51 AM, Josh Baird wrote: >>> >>> Yes - it can accept multiple voltages on PWR1 and PWR2. >>> >>> Josh >>> >>> On Mon, Mar 20, 2017 at 8:24 AM, Paul McCall <[email protected]> wrote: >>> >>>> Can the sitemonitor have two different voltages on the 2 inputs that it >>>> monitors / powers from? >>>> >>>> >>>> >>>> We have a lot of them setup in the field with a 110vac โ 24v wall wart >>>> to monitor commercial power. And, the 2nd input is off the 24v >>>> battery array. Batteries are all 48v now, so wondering if I need to buy a >>>> bunch of similar 48v wall warts or whether the SiteMonitor can deal with >>>> the 2 different voltages and I donโt need to buy anything ๐ >>>> >>>> >>>> >>>> Paul McCall, President >>>> >>>> PDMNet, Inc. / Florida Broadband, Inc. >>>> >>>> 658 Old Dixie Highway >>>> >>>> Vero Beach, FL 32962 >>>> >>>> 772-564-6800 <%28772%29%20564-6800> >>>> >>>> [email protected] >>>> >>>> www.pdmnet.com >>>> >>>> www.floridabroadband.com >>>> >>>> >>>> >>>> >>>> >>> >>> >>> >>> >> > > >
