Siemens FS720 - Page 204

Installing, exchanging and connecting modules
Sounder module
7
204 | 248
Building Technologies
A6V10210390_m_en_
--
Fire Safety
2018
-
08
-
29
7.24.2.3 X3 sounder 3 and 4 outputs
Pin Designation Description
1 S4 out+ Sounder output 4 (+)
2 S4 out- Sounder output 4 (-)
3 S3 out+ Sounder output 3 (+)
4 S3 out- Sounder output 3 (-)
Permissible conductor cross-section: 0.2…1.5 mm²
The terminating resistor of 3 kΩ has to be connected even when the output is not in
use.
1
2
X3
S4 out-
S4 out+
3
4S3 out-
S3 out+
+
-
-
+
3 k
Ω
3 k
Ω