Siemens FS720 - Page 112

Installing, exchanging and connecting modules
Power supply (150 W)
7
112 | 248
Building Technologies
A6V10210390_m_en_
--
Fire Safety
2018
-
08
-
29
7.6.4.4 Parallel switching of two supply units
Figure 56: Parallel connection of two power supply units (150 W)-A5
1 Cable tree to periphery board or fire terminal board
2 Existing cable tree (connection for master power supply)
3 Additional cable tree for the second power supply (slave)
4 Additional fused terminal (F2) on the DIN rail
NO
NO
C
8
9
6
7
X8
4
5
3
2
1
0
I-begr.
+24V
+B
+B
+24V+24V
+24V
0V
0V
0V
+24V
T6.3A
+24V
8
9
6
7
X11
SA
F
F
BS
SA
SB
SB
NS
S
4
5
3
2
1
12 A ... 20 A
NTC
4.7 k
Ω
MASTER
SLAVE
SV 24V-150W-A5
SV 24V-150W-A5
I-unbegr.
F2:
COMMON
#MAINS
#BATT
VSYS+
VSYS -
3
Battery
NO
NO
C
8
9
6
7
X8
4
5
3
2
1
0
I-begr.
+24V
+B
+B
+24V+24V
+24V
0V
0V
0V
+24V
T6.3A
+24V
8
9
6
7
X11
SA
F
F
BS
SA
SB
SB
NS
S
4
5
3
2
1
I-unbegr.
2
2
4
1