Bosch FPA-5000 - Fire alarm; Evacuation

40 en | Planning Modular Fire Panel
09.2017 | 11.3 | F.01U.028.089 System Information Bosch Sicherheitssysteme GmbH
Standby Current Calculation to EN 54-4
I
max, Standby
=
C
Batt
-
I
Alarm
x 0,5h
t
Standby
I
max, A
= 6A -
18h
C
Batt
(1) (2)
I
nom
= min
[
I
max, Standby
, I
max, A
]
(3)
Formula(1) describes the maximum system current to guarantee a particular back-up time
(Imax,Standby).
Formula(2) describes the maximum system current taking into account simultaneous battery
charging (Imax.A).
The system standby current (Inom) to be selected is calculated from the lower of the two
maximum system current values, as shown in the formula (3).
Parameters:
– t
Standby
= back-up time in hours
– I
Alarm
= maximum alarm current (Imax,B)
– C
Batt
= battery capacity in Ah
Possible capacities (CBatt):
– 24-26Ah or 36-45Ah with 2batteries
– 48-52Ah or 72-90Ah with 4batteries
3.9 Redundancy
Standards and guidelines (e.g. DIN VDE 0833-2, EN 54-2) require different, country-specific
redundancy conditions for specific applications:
– In the event of a system fault in the panel or the system, no more than 512 detectors may
fail (EN 54-2). In such cases, redundant system components must be used:
– Redundant panel controller
– Redundant connection to a Bosch UGM
– Redundant connection of the transmission device or AT3000, see the FPA-5000/
FPA-1200 wiring guide (document number F.01U.009.201)
– Activation of extinguishing systems in accordance with VdS 2496: If a signal processing
unit fails, no more than one extinguishing area may fail. In such cases, redundant system
components must be used:
– Redundant panel controller
– Redundant LSN 0300 A module when using more than one FLM-420-RLE-S in an LSN
loop
Redundant panel controller
For a redundant connection, a second basic housing with an additional panel controller and a
CRP 0000 A Cable Set is required, where applicable. The figure below shows a configuration
with a redundant panel controller. The slots (2) behind a redundant panel controller (1) must
not be occupied with modules.