Siemens FS720 Mounting & Installation page 82

Installing, exchanging and connecting modules
6
Power supply (150 W)
6.6.4.4 Parallel switching of two supply units
82 | 222
Building Technologies
Fire Safety
SV 24V-150W-A5 MASTER
X11
SB 9
SB 8
SA 7
SA 6
5
F
F 4
BS
NO 3
NS
NO
2
C
1
S
X8
0
I-begr. +B
T6.3A
I-unbegr. 9
+B
8
+24V
7
+24V
+24V 6
+24V +24V 5
4
+24V
3
0V
2
0V
1
0V
SV 24V-150W-A5 SLAVE
X11
SB 9
SB 8
SA 7
SA 6
F 5
4
F
BS
NO 3
NS
NO
2
C
1
S
X8
0
+B
T6.3A I-begr.
I-unbegr. 9
+B
8
+24V
7
+24V
+24V 6
5
+24V +24V
4
+24V
3
0V
2
0V
0V 1
Figure 37: 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
2
NTC 4.7 kΩ
4
2
F2: 12 A ... 20 A
#BATT
#MAINS
COMMON
1
VSYS+
VSYS-
Battery
3
A6V10210390_j_en_--
2015-12-15