Siemens FS720 - Modifications to the Modules for Class B

Installing, exchanging an
d connecting modules
Ethernet switch FN2008 and safety module FN2009
7
151 |
248
Building Technologies
A6V10210390_m_en_
--
Fire Safety
2018
-
08
-
29
7.14.6 Modifications to the modules for class B
For the 'Ethernet switch (MM)' and 'Security module (firewall)' modules, the
following modifications are required to the wiring to reduce fault transmission from
limit value class A to class B:
● For each electrical Ethernet connection, one ferrite core, type Würth Elektronik,
742 701 51
● For each supply connection, one ferrite core, type Würth Elektronik, 742 715 4
Figure 80: Modifications to the wiring for class B
P5
P6
RX
TX
RX
TX
P1
P2
P3
P4
1
P1
P2
L1+
L2+
M1
M2
L1+
L2+
M1
M2
3
7
2
4
6
5
4
6
7