Battery backup mode, Battery backup mode -5, Figure 8-4 – ADTRAN 4200659L1 User Manual
Page 145: Battery backup system -5, Figure 8-4. battery backup system, Pwr fail ret pwr fail, N e t
Chapter 8. Power Loss Recovery
61200659L1-1
MX2800 STS-1 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 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.
.
Figure 8-4. Battery Backup System
White
Green
Black
Red
-
RET
PWR
FAIL
-
RET
PWR
FAIL
MX2800 STS-1
Battery Charger
Power Cable
PWR
FAIL
RET
PWR
FAIL
Magnified View
-48 VDC
Backup Battery Pack
P/N 1175044L1
AC Power Input
AC/DC Power Supply
Battery Charging Unit
P/N 1175043L2
N E T
The MX2800 STS-1 can operate on a fully-charged battery for four
hours without recharging.