Pepperl+Fuchs LB Series Manual page 31

LB Remote I/O System
Installation
S
Figure 3.8
1 X4: fieldbus connection
2 Service bus connection
3 X40: booster connection
4 S1: function switch
5 X3: bus-independent deactivation of the I/O modules
6 X1: 24 VDC power supply (SELV/PELV)
X4 Terminal Assignment
X4.1 = - FF H1

X4.2 = shield

X4.3 = + FF H1

The grounding of the shield depends on the position of switch S1.
S1.3
ON
OFF
1
2
3
4
5
6
Connections
The shield is connected directly to PE.
The shield is connected to PE via capacitive
means.
31