Siemens FS720 Mounting & Installation page 108

Installing, exchanging and connecting modules
7
Power supply (150 W)
7.6.3.4 Parallel switching of two supply units
108 | 248
Building Technologies
Fire Safety
NOTICE
Damage to the power supply
Different versions (A4/A5) of the power supply (150 W) may not be switched in
parallel.
SV 24V-150W-A4 MASTER
X11
NC 9
NC 8
SA 7
SA 6
F 5
F 4
BS
3
NO
NS
NO
2
C
1
S
X8
0
I-begr. +B
T6.3A
I-unbegr.
+B 9
8
+24V
7
+24V
+24V 6
5
+24V +24V
4
+24V
3
0V
2
0V
1
0V
SV 24V-150W-A4 SLAVE
X11
9
NC
8
NC
SA 7
SA 6
F 5
F 4
BS
NO 3
NS
NO
2
C
S 1
X8
+B 0
T6.3A I-begr.
I-unbegr. 9
+B
+24V 8
7
+24V
6
+24V
+24V +24V 5
4
+24V
3
0V
2
0V
1
0V
Figure 54: Parallel connection of two power supplies (150 W)-A4
2
NTC 4.7 kΩ
4
2
F2: 12 A ... 20 A
#BATT
#MAINS
COMMON
1
VSYS+
VSYS-
Battery
3
A6V10210390_m_en_--
2018-08-29