Pepperl+Fuchs LB Series Manual page 20

LB Remote I/O System
Product Specifications
Zone 1, 2
Figure 2.26
2.6.3 Separation between Intrinsically Safe and Non-Intrinsically Safe I/O
Modules
The separation wall is attached to the backplane between I/O modules with intrinsically safe
circuits and I/O modules with non-intrinsically safe circuits to ensure a clearance of 50 mm
between intrinsically safe circuits and other circuits. The separation wall can be installed on
both backplanes with and without a label carrier.
Figure 2.27
20
F-NR2-Ex1
1+ +
1.5 kΩ
10 kΩ
2- -
Block diagram of the F-NR2-Ex1 resistor network
Separation wall on the LB9182A
Separation
wall
Backplane
Label carrier