Siemens 13-xx-ST-SBT Series Product Data page 175

Building Technologies
Fire Safety
Switching variants for monitored alarm and horn outputs with load
resistance monitoring (VdS)
X11
FireOutput2-
FireOutput2+
FireOutput1-
FireOutput1+
Switching examples for monitored alarm and horn outputs with load resistance monitoring
(VdS)
Rload Load resistance
Rcable Line resistance
* Adaptation of the load resistance.
You will find detailed information regarding the determination of the resistances for
the monitored outputs in the document Planning 008843.
Switching for configurable inputs/outputs
X11 27V2
0 V
27V2
10k
GPIO1
X12
27V2
10k
GPIO2
Switching for relays
1 Configured as output
2 Configured as input
Example
horn output
- 8
Rload
+ 7 Rcable
- 6
+ 5
Rx Additional load resistance
* If necessary
1
+
4
-
1
2
7
8
I/O card (RT) FCI2007-A1
Pin assignments
Example
alarm output
*
*
Rx
Rload
Rcable
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