Siemens FS720 - Page 96

Installing, exchanging and connecting modules
Fire terminal board
7
96 | 248
Building Technologies
A6V10210390_m_en_
--
Fire Safety
2018
-
08
-
29
7.4.2.3 X6/X7 supply input 2/1
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.
Figure 47: FTI2001-A1, supply via a fire control panel
X6, supply input 2
Pin Designation Description
4 VSYS - 2 Ground
3 VSYS - 2 Ground
2 VSYS + 2 System supply (+)
1 VSYS + 2 System supply (+)
Admissible cable cross-section: 0.2…2.5 mm²
FT724
Fire terminal board
U
Sys 1
U
Sys 2
X7
X6
4
3
X6
VSYS -2
VSYS -2
2
1
VSYS +2
VSYS +2
-
+
-
+