Installation
Power supply - mains voltage connection
6
54 | 118
Building Technologies
A6V10211100_f_en_--
Fire 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
Alarm output (+)
2
SOUND1-
Output for acoustic signal transmitter (-)
1
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-
+