ADTRAN MX2800 - Battery Backup Mode

Chapter 8. Power Loss Recovery
61200290L1-1 MX2800 User Manual 8-5
BATTERY BACKUP MODE
With the installation of the ADTRAN Power Supply/Battery
Charger (PS/BC) and backup battery pack, the MX2800 is able to
continue operation without service interruption in the event of a
power outage. This PS/BC (part number 4175043L1) provides
-48 VDC to the MX2800. It receives 115 VAC through a standard
plug and wall socket.
The PS/BC maintains the battery at peak charge (-48 V) at all times.
If AC power is lost, the unit automatically transfers power to the
battery without interrupting service. When AC power returns, the
unit switches back to AC power and recharges the battery. For
installation instructions, refer to the guide provided with the PS/
BC. See Figure 8-4 for an illustration of this setup.
.
Figure 8-4. Battery Backup System
The MX2800 can operate on a fully-charged battery for four hours with-
out recharging.
White Green Black Red
-
RET
PWR
FAIL
-
RET
PWR
FAIL
Battery Backup Cable
MX2800
Battery Charger
Power Cable
PWR
FAIL RET
PWR
FAIL
Magnified View
Green
Black
White
-48 VDC
Backup Battery Pack
P/N 1175044L1
AC/DC Power Supply
Battery Charging Unit
P/N 1175043L1