Siemens FS720 Mounting & Installation page 65

6.4.2.2 X5 supply output
6.4.2.3 X6/X7 supply input 2/1
Building Technologies
Fire Safety
Pin Designation
4 GND 2
3 VSYS 2
2 GND 1
1 VSYS 1
Admissible cable cross-section: 0.2...2.5 mm²
X5
GND 2 4
VSYS 2 3
GND 1 2
VSYS 1 1
If the fire terminal is supplied by a fire control panel, a redundant supply is needed
according to EN 54. For reasons of reliability, the two supply lines must be routed
separately.
FT724
Fire terminal board
Figure 28: FTI2001-A1, supply via a fire control panel
Installing, exchanging and connecting modules
Description
Ground
System supply (+) (1 A/T)
Ground
System supply (+) (1 A/T)
X7
X6
6
Fire terminal board
U
Sys 1
U
Sys 2
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2015-12-15