Siemens FS720 Mounting & Installation page 84

Installing, exchanging and connecting modules
6
Power supply (150 W)
6.6.4.5 Parallel switching of three supply units
SV 24V-150W-A5 MASTER
X11
SB 9
8
SB
7
SA
SA 6
5
F
F 4
BS
NO 3
NO NS
2
C
S 1
X8
0
I-begr. +B
T6.3A
I-unbegr.
9
+B
8
+24V
7
+24V
+24V 6
5
+24V +24V
4
+24V
3
0V
2
0V
1
0V
SV 24V-150W-A5 SLAVE 1
X11
SB 9
SB 8
7
SA
SA 6
5
F
4
F
BS
NO 3
NS
NO
2
C
S 1
X8
0
I-begr. +B
T6.3A
I-unbegr.
+B 9
8
+24V
7
+24V
6
+24V
5
+24V +24V
4
+24V
3
0V
2
0V
0V 1
84 | 222
Building Technologies
Fire Safety
2
NTC 4.7 kΩ
2
F2: 12 A ... 20 A
3
Figure 38: Parallel switching of three 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 1)
4 Additional fused terminal (F2) on the DIN rail
5 Additional cable tree for the third power supply (slave 2)
#BATT
#MAINS
COMMON
+VSYS
4
-VSYS
Battery
SV 24V-150W-A5
X11
9
SB
8 SB
7
SA
6 SA
5 F
4
F
5
BS
3
NO
NS
2
NO
C
1
S
X8
0
+B I-begr.
9
+B I-unbegr.
8
+24V
7
+24V
6 +24V
5
+24V +24V
5
4
+24V
3
0V
2
0V
1
0V
1
SLAVE 2
T6.3A
A6V10210390_j_en_--
2015-12-15