Siemens FS720 - Page 76

Mounting and installing extinguishing control panels
Extinguishing terminal installation and
wiring
6
76 | 248
Building Technologies
A6V10210390_m_en_
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Fire Safety
2018
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08
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29
6.4.2.3 External power supply, connector X2
If the extinguishing terminal is supplied with power by an external power supply,
ground fault monitoring must be switched on.
Connector X2, supply
PIN Designation Description
1 VSYS_POS Supply input V+
2 VSYS_POS Supply output V+ (looped through)
3 VSYS_NEG Supply input V-
4 VSYS_NEG Supply output V- (looped through)
5 #MAINS Network monitoring connection
6 #BATTERY Battery monitoring connector
7 -3SRC Supply input V-, 3rd source of voltage
8 +3SRC Supply input V+, 3rd source of voltage
Figure 41: Wiring diagram of an external terminal with external power supply
FP2015
VSYS_POS
VSYS_NEG
#MAINS
#BATTERY
Extinguishing terminal
+
1
3
2
4
5
7
6
8
-3SRC
+3SRC
VSYS_POS
VSYS_NEG
+
-
-
-
+
7
8
5
6
X2
3
4
BATT +
2
1
-
+
VSYS +
-
+
VSYS -
BATT -
F3
#MAINS
#BATTERY
External housing
2x 12 V
1x 9 V
X2