Aria-24
ipe
Digital Key Telephone System
Installation Manual
Issue 1.5
Aria Technologies
19
2.2.6 External backup batteries connection
In case of power failure, the external backup batteries automatically maintain the power for the Aria-
24ipe system without interruption.
* Note:
The cable for the battery connection is supplied with KSU in the same package.
The external batteries must provide 24 Volts DC. This is generally accomplished by connecting two 12
Volt batteries in a series arrangement. Operation on batteries is controlled by the MBU. This Aria-24ipe
MBU will provide charging current to the batteries during normal AC power operation at a maximum of
about 100mA. During battery operation, the battery operation of MBU will be stop if the AC power re-
applied or the battery voltage is too low to maintain proper system operation.
The system operating time by external batteries depends on several elements as follows, battery charge
state, condition of the batteries, capacity of the batteries, and the system configuration (number of
station ports).
Warning
1.
Carefully check the battery polarity with cable colors(RED and BLUE) when
connecting the battery to system.
2.
Make sure that you do not short the external backup batteries or cables.
3.
There is a danger of explosion if external backup batteries are incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer‟s instructions.
4.
It is recommended to use a fuse(5A @250V) between battery and system.
5.
Recommended battery capacity is 24V/10AH MF battery. The Aria-24ipe system will
operate more than 5 hours with this battery.
