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 Direct: 937-552-2343 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 [email protected] www.pdmnet.com www.floridabroadband.com
