Siemens FS720 Mounting & Installation page 96

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