Modifications To The Modules For Class B - Siemens FS720 Mounting & Installation

Installing, exchanging and connecting modules
6
Ethernet switch FN2008 and safety module FN2009

6.14.6 Modifications to the modules for class B

122 | 222
Building Technologies
Fire Safety
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
P1
P2
L1+
M1
M2
L2+
RX
P1
P5
P2
TX
RX
P3
P6
P4
TX
L1+
M1
M2
L2+
Figure 61: Modifications to the wiring for class B
1
2
6
3
4
7
6
5
4
7
A6V10210390_j_en_--
2015-12-15