Siemens FS720 - Page 114

Installing, exchanging and connecting modules
Power supply (150 W)
7
114 | 248
Building Technologies
A6V10210390_m_en_
--
Fire Safety
2018
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08
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29
7.6.4.5 Parallel switching of three supply units
Figure 57: Parallel switching of three power supply units (150 W)-A5
+VSYS
-VSYS
12 A ... 20 A
NTC
4.7 k
Ω
F2:
COMMON
#MAINS
#BATT
5
5
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
MASTER
SLAVE 1
SV 24V-150W-A5
SV 24V-150W-A5
I-unbegr.
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.
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.
SLAVE 2
SV 24V-150W-A5
1
2
2
4
3