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Relay For Fault And Alarm (rt Activation) - Siemens FC72x Quick Reference Manual

Fire control panel, fire terminal.
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Installation
5
Hardware components

5.3.2 Relay for fault and alarm (RT activation)

X7
X7
6
5
4
3
2
1
NO
NO
NO
24 | 62
Building Technologies
Fire Safety
Assignment of connection terminals on periphery board (identical for FC722 and
FC724). Permitted cable cross-section: 0.2...1.5 mm
FC722 and FC724
Designation
Description
FAU_NC
Break contact fault (normally closed)
FAU_COM
Center tap fault (common)
FAU_NO
Make contact fault (normally open)
AL_NC
Break contact alarm (normally closed)
AL_COM
Center tap alarm (common)
AL_NO
Make contact alarm (normally open)
The relays can be used e.g. for non-monitored activation of remote transmission
equipment 'RT' (e.g. phone dialing equipment).
Fault relay (inverse operation)
The fault relay is activated when at least one station fault has been detected. This
relay is activated when the control panel is in idle mode (, NC, inverse operation).
In the event of a fault message, the relay changes the switching condition (to C,
NO). Thanks to inverse operation, a fault message will still be sent in the event of
the station losing all power.
+ Ub (DC)
Alarm relay
The alarm relay is activated when at least one station alarm message has been
detected.
Example of connection with external signal transmitter, e.g. an optical normal
operation/alarm message display.
+ Ub (DC)
.
2
Connection to an external monitoring
input (example)
Connection of external control
voltage e.g. for an acoustic or optical
fault message (example)
+
Normal operation
Alarm
Potential-free
directional contact
Max. 24 V DC/1 A
Potential-free
directional contact
Max. DC 24 V / 1 A
A6V10211094_f_en_--
2015-12-15

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Ft724

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