ipLDK-60 Hardware Description and Installation Manual
Issue 1
BOARD INSTALLATION
JAN, 2007
18
3.2.6 External Backup Battery Installation
In case of power failure, the external backup batteries automatically maintain uninterrupted power for the ipLDK-60
System. The external batteries must provide 24V DC; this is generally accomplished by connecting two 12V batteries
in a series arrangement as shown:
FIGURE 3.2.6 EXTERNAL BACKUP BATTERY INSTALLATION
NOTE—The cable used to connect the battery is supplied with the KSU.
Battery operation is controlled by the PSU. The PSU will provide charging current to the batteries during normal AC
power operation at a maximum of about 200mA. PSU battery operation will be halted if the AC power is re-connected
or if the battery voltage is too low to maintain full-system operation.
The external batteries can maintain System operation as needed depending on several elements such as battery
charge status, condition and capacity of the batteries, and System configuration (number of Station ports).
CAUTION—
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It is recommended to use an external backup battery fuse (5A @250V) between the battery and
the System.