Siemens FC700A - Cascading Power Supply Principle

Principle of 24V wiring
20
Siemens Building Technologies 007831_a_en_--.doc
Fire & Security Products 03.2004
5.1 Cascading principle
7
6
E3C011
-
-
K1
5
4
+
+
3
2
+
+
16
15
14
13
20
19
18
17
B2F020
+
-
B2F020
+
-
Mains
Battery 2
max. 27Ah
Battery 1
max. 27Ah
7
6
E3C011
-
-
K1
5
4
+
+
3
2
+
+
16
15
14
13
20
19
18
17
12V
12V
8
9
10
X17
12V
12V
8
9
10
X17
Standard power supply
Auxiliary power supply
operating in parallel
Mains
Cascading