Monitored Fault Output - Siemens FS20 Planning Manual

Defining controls
9
Monitored outputs (I/O card (remote transmission) FCI2007-A1 and I/O card (horn/monitored) FCI2009-A1)

9.1.3 Monitored fault output

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Building Technologies
Fire Safety
Dimensioning table for monitored alarm and horn outputs with load
resistance monitoring (VdS)
Load
RIoad [Ω]
>40
>100
>1000
>2000
Table 37: Dimensioning table 2 for monitored alarm and horn outputs with load resistance monitoring
(VdS)
RIoad Load resistance [Ω]
UIload Load voltage (Minimum) [V]
RcableMax. Maximum permitted cable resistance [Ω]
Loads of less than 40 Ω cannot be monitored as part of load resistance
monitoring.
The connection type with monitored fault output has the following features:
● Monitoring is carried out in an active and inactive status with normal polarity.
● The monitored fault output connection is identical to the load resistance
monitoring connection. Only the Rload and RcableMax values are different.
If the resistance is not linear and is high (e.g. in the case of electronic loads such
as sounders and beacons), the monitoring resistance must be defined using a
dominant Rx. A freewheeling diode should also be used for inductive loads.
-
FCI2007
Rload
FCI2009
+
Rcable
Figure 61: Monitored fault output connection
Optional load resistance as well as optional freewheeling diode for inductive load
1
UIoad [V]
<21
<15
<21
<15
<21
<15
<21
<15
1 1
Uload Rx
Monitoring
RcableMax. [Ω]
6
24
14
60
148
200
200
200
008843_v_en_--
2015-12-15