Pin Assignments - Siemens FS720 Mounting & Installation

7.24.2 Pin assignments

7.24.2.1 X1 supply input and sounder input from the periphery
X1 sounder module
Pin Designation
1 +Vsys
2 Ground
3 Sound In +
4 Sound In -
7.24.2.2 X2 sounder 1 and 2 outputs
Building Technologies
Fire Safety
board
Description
Supply input from the
periphery board (+)
Supply input from the
periphery board (-)
Sounder input from the
periphery board (+)
Sounder input from the
periphery board (-)
Permissible conductor cross-section: 0.2...1.5 mm²
X1
Vsys 1
2
Ground
+
3
Sound In+
-
Sound In- 4
Pin Designation
1 S2 out+
2 S2 out-
3 S1 out+
4 S1 out-
Permissible conductor cross-section: 0.2...1.5 mm²
X2
S2 out+ 1
+
2
S2 out-
-
+
S1 out+ 3
-
S1 out- 4
The terminating resistor of 3 kΩ has to be connected even when the output is not in
use.
Installing, exchanging and connecting modules
Periphery board
2 loops
Pin Designation
X8-5 VSYS_01 (+)
X8-6 GND_01 (-)
X6-1 SOUND1+
X6-2 SOUND1-
Description
Sounder output 2 (+)
Sounder output 2 (-)
Sounder output 1 (+)
Sounder output 1 (-)
3 kΩ
3 kΩ
7
Sounder module
Periphery board
4 loops
Pin Designation
X8-7 VSYS_01 (+)
X8-8 GND_01 (-)
X5-1 SOUND1+
X5-2 SOUND1-
203 | 248
A6V10210390_m_en_--
2018-08-29