Esser FACP 8000C - Battery Protection and Monitoring

Page 78
Fire Alarm Computer 8000C
The power supply module is rated for a max. capacity of two batteries (2 x 12V/24Ah). In the event
of mains voltage failure, the batteries will immediately assume voltage supply.
The power supply module must only be installed or removed with the fire alarm control
panel in a de-energized state.
1
2
3
ON
OFF
BR2
Fig. 36: Lage der Steckbrücke BR2 auf dem Netzteilmodu
Protection against deep discharging of the batteries (BR2)
In case of lost of the mains voltage the control panel will get driven without a brake by the
connected battery. Depending on the capacity of the battery a backup time of up to 72 hours can
be realized. After that time the external alarm devices must be still operable in an alarm condition.
The activation of these devices must be still possible with a minimum battery voltage of 10.5V DC.
As soon as the voltage of the batteries goes below 9.5V the battery backup will get disconnected
to protect the batteries and the control panel. The control panel is no longer operational.
Eliminate the trouble condition of the mains power supply and turn/switch on the control panel. The
connected batteries will get charged automatically if the voltage of the batteries during the battery
test without external load will be higher than 10.5V DC. A battery failure will be indicated if the
voltage of the batteries will not exceed this level. Discharged batteries have to get loaded with an
external power supply or have to get replaced. The protection for deep discharging of the batteries
can be enabled / disabled with the jumper BR2. (BR2 closed = battery protection enabled / BR2
open = battery protection disabled)
!
Exhausted batteries (off-load voltage Ubattery < 10,0V DC) will not charge correctly. Only
the battery types approved by the fire alarm control panel manufacturer may be used for
supplyingthe fire alarm control panels with backup power. Please pay attention to the
manual of the manufacturer of the batteries. It is possible that deep discharged batteries
can not be used and have to get replaced.
power supply module