Matrix Telecom SARVAM UMG System Manual page 42

Connecting an FCBC to the ETERNITY GENX
As PS48VDC Card works with FCBC, the input voltage working range has hysterisis.The power supply turns ON at
Voltage greater than 45VDC and it remains ON till 40VDC during battery discharge condition. Moreover, the input
voltage for the card must be from 40VDC to 60VDC.
FCBC
BATTERY
48VDC BATTERY
AC MAINS SUPPLY
2 3 0 V A C + / -
1 0 % @ 5 0 H z
Connect the Battery Backup
7.
of system's load and load of active extensions.
If installing Eternity GE CARD PSBB, connect the Battery Backup. Terminate the power cord from the
8.
Battery Backup output into the 3-way termination block on the PS Battery Backup card. The Battery cable
supplied with the card has a connector on one end and the other end is free. Insert the cable connector
into the connector on the card as shown below. At the other free end connect the Battery.
Polarity is critical. Ensure that the wires are connected with the correct polarity. Follow the standard color
codes used by Battery manufacturers:
Color
Red
Black
3. When the batteries are drained, the FCBC goes into the charge mode and begins to charge the batteries at higher current. When the
batteries reach a preset voltage level (typically set to 56.0 volts), the FCBC goes to float mode. In the float mode the FCBC keeps
charging the battery but at lower current. The FCBC monitors the voltage level of the batteries. As soon as the battery voltage goes
below preset voltage (typically set to 50.4 volts), FCBC goes from float mode to charge mode. The change over from mains to battery
and vice-versa is automatic. The advantage of using an FCBC is that batteries get charged faster, since the batteries are charged
with higher current initially.
Matrix SARVAM UMG System Manual
ETERNITY GE CARD PS48VDC
LOAD
48VDC
FCBC
10A
48V BATTERY
3
. Battery backup time depends upon the total load. The total load is the sum
Signal
+24VDC
GND
ETERNITY GE
CARD PS48VDC
ETERNITY GENX
+3.5VDC (LED L1)
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