User's Manual

U
SER
´
S MANUAL FOR BAND SELECTIVE REPEATERS
MR
X
03P
User'sManual.doc Id.-No.:154999 Page 22 22-Jan-01
3.3. BATTERY BACKUP
The repeater can be provided with the battery backup option to enable alarm calls in
case of power failure. The battery backup module supports multiple dial out attempts
via modem in case of “System engaged” or other communication problems for about
ten minutes under normal environmental conditions.
The batteries are protected from deep discharge by use of a low voltage disconnect
unit. A local switch is provided to disconnect the battery backup option during
maintenance to ensure that all circuits are voltage-free. The switch is located on the
battery backup module.
The module is directly plugged onto the control module and can be installed on site.
During the charging process, a green LED on the module indicates that the battery is
charged at the moment. After finishing the process, the LED will be switched off.
figure 3-4 Location of the battery backup module
Switch LED