Siemens FS720 - Page 108

Installing, exchanging and connecting modules
Power supply (150 W)
7
108 | 248
Building Technologies
A6V10210390_m_en_
--
Fire Safety
2018
-
08
-
29
7.6.3.4 Parallel switching of two supply units
NOTICE
Damage to the power supply
Different versions (A4/A5) of the power supply (150 W) may not be switched in
parallel.
Figure 54: Parallel connection of two power supplies (150 W)-A4
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
NC
NC
NS
S
4
5
3
2
1
12 A ... 20 A
NTC
4.7 k
Ω
MASTER
SLAVE
SV 24V-150W-A4
SV 24V-150W-A4
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
NC
NC
NS
S
4
5
3
2
1
I-unbegr.
2
2
4
1