Siemens FS720 - Page 74

Mounting and installing extinguishing contro
l panels
Extinguishing terminal installation and wiring
6
74 | 248
Building Technologies
A6V10210390_m_en_
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Fire Safety
2018
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08
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29
6.4.2.2 Secondary 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