Siemens FS720 - Extinguishing Terminal Connection Assignment and Wiring

Mounting and installing extinguishing control panels
Extinguishing terminal installation and wiring
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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 Extinguishing terminal connection assignment and wiring
The connections described here using the printed circuit board XTO2001 and apply
to all extinguishing terminals.
6.4.2.1 Primary extinguishing terminal, connections X1, X2
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
Connector X1, RS485 connection
PIN Designation Description
1 DATA_A Terminal line +
2 DATA_A Terminal line + (looped through)
3 DATA_B Terminal line -
4 DATA_B Terminal line - (looped through)
Admissible cable cross-section: 1.5... 1.5 mm²
Wiring diagram
Figure 39: Wiring diagram for internal extinguishing terminal
FCA2046 Card cage
INT_DATA_B
INT_DATA_A
A
B
Extinguishing terminal
DATA_A
A
B
1
3
2
4
A
B
DATA_A
DATA_B
DATA_B
+
-
1
3
2
4
X10
VSYS_POS
VSYS_NEG
#MAINS
#BATTERY
Extinguishing terminal
+
1
3
2
4
5
7
6
8
-3SRC
+3SRC
VSYS_POS
VSYS_NEG
+
-
-
-
+
X2
X1
INT_VSYS
INT_VSYS