Local Alarm (La); Alarm Transceiver (At); Key Depot (Kd); Fire Brigade Operating Panel (Fbf) - Siemens SIGMASYS C Manual

7 Control unit connections
7.1

Local alarm (LA)

An alarm device can be operated for local alerting. The alarm device is installed on the sys-
tem's connection board. Loads with an internal resistance of 200 to 1000 Ohm can be con-
nected. The maximum line resistance is 10% of the load resistance.
7.2

Alarm transceiver (AT)

An alarm receiver is used for alerting the responsible service (e.g. fire brigade, police) via a
dedicated line. The alarm transceiver is installed on the system's connection board.
The output is only activated on an object-specific basis. Loads with an internal resistance of
200 to 1000 Ohms can be connected. The maximum line resistance is 10% of the load resis-
tance.
The alarm transceiver and local alarm outputs can be freely programmed. 2 BMT ATs can be
activated as of Version 2.6. The control and operating panel delay time before acknowledge-
ment by AT can be set.
N.B.: The function of the fire brigade operating panel is always permanently
linked to the objects of the first AT. An object must not be assigned to more than one
alarm transceiver.
7.3

Key depot (KD)

The key depot (KD), previously fire brigade key safe (FSK), is installed on the system's con-
nection board. External adapters are not required for the connection. The key depot is used
for housing keys to the building.
Only keys certified by the VdS may be used.
The key depot must be connected to the same control and indicating panel as the alarm
transceiver.
7.4

Fire brigade operating panel (FBF)

The fire brigade operating panel is an add-on unit for fire alarm control and indicating panels
and is used to display the operating status and for operation of the fire alarm system by the fi-
re brigade.
The FBF is connected to the system's connection board without add-ons. Four input and four
outputs are available on the system's connection board for fire brigade operation.
Inputs:
Outputs:
38 / 128
General reset
AT disablement
Local alarm enablement/disablement
Activate/deactivate control in case of fire
Alarm acknowledged/not acknowledged
AT disabled/faulty
Local alarm disabled/faulty
Best.Nr. A24205-A337-B970 – Edition 12 (03/07)
BMT Project Planning Guidelines