Siemens Cerberus PRO FC721 - Monitored Outputs and Acoustic Signal Transmitter Connection; Monitored Outputs for Alarm;Fault (FT Activation)

Installation
Power supply
-
mains voltage connection
6
54 | 118
Building Technologies
A6V10211100_f_en_
--
F
ire Safety
2015
-
12
-
15
6.4.3.2 Monitored outputs for alarm and fault (FT activation)
Connection terminals on the periphery board (1-loop) of FC721. A cable cross-
section of 0.2 to 1.5 mm
2
can be connected to the terminals.
X6 Designation Description
6 FAU_OUT Output fault
5 VSYS_O Supply output for consumer fault
4 AL_OUT- Alarm output (-)
3 AL_OUT+ Alarm output (+)
2 SOUND1- Output for acoustic signal transmitter (-)
1 SOUND1+ Output for acoustic signal transmitter (+)
The outputs can be used e.g. for monitored activation of remote transmission
equipment 'RT' (e.g. phone dialing equipment).
The connection lines are switched with a monitoring resistor (termination resistor).
The resistance value stated corresponds to monitored normal operation. All
resistance values outside this range result in a fault message.
Enabling example for transmitting a
fault message
Terminating resistor
R = 1.6 kohms – 2.3 kohms
Enabling example for transmitting an
alarm message
Monitoring resistor (R + Ri)
Rges = 2.3 kohms – 5.5 kohms
X6
X6
+
X6
AL_OUT-
AL_OUT+
+