Siemens FS720 - Page 100

Installing, exchanging and connecting modules
Power supply (70W)
7
100 | 248
Building Technologies
A6V10210390_m_en_
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Fire Safety
2018
-
08
-
29
7.5.2.3 X2 Power supply and signal lines FP2015
Pin Designation Description
8 Battery Detection line (#BATT): Battery fault
7 Not used
6 Mains Detection line (#MAINS): Mains fault
5 Not used
4 Usys + System supply (VSYS+)
3 Usys – System supply (VSYS-)
2 Akku + Battery supply (+), protected with F3
1 Akku – Battery supply (–)
Admissible cable cross-section: 0.2…2.5 mm²
1 Cable tree to periphery board or fire terminal board
7
8
5
6
X2
3
4
Mains
Akku +
VSYS-
VSYS+
Battery
2
1
-
+
Usys +
-
+
Usys -
Akku -
#BATT
#MAINS
F3
1