Battery Backup Mode; Figure 8-4. Battery Backup System - ADTRAN 1200287L1 User Manual

BATTERY BACKUP MODE

With the installation of the ADTRAN Power Supply/Battery
Charger (PS/BC) and backup battery pack, the MX2800 STS-1 is
able to continue operation without service interruption during a
power outage. This PS/BC (P/N 4175043L2) provides -48 VDC to
the MX2800 STS-1. 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.
.
The MX2800 STS-1 can operate on a fully-charged battery for four
hours without recharging.
61200659L1-1
MX2800 STS-1
N E T
AC/DC Power Supply
Battery Charging Unit
P/N 1175043L2
AC Power Input
-48 VDC
Backup Battery Pack
P/N 1175044L1
MX2800 STS-1 User Manual
Chapter 8. Power Loss Recovery
PWR PWR
FAIL RET FAIL
Battery Charger
Power Cable

Figure 8-4. Battery Backup System

Magnified View
8-5