Pepperl+Fuchs LB Series Manual page 25

LB Remote I/O System
Installation
1 X40: booster connection
2 S1: function switch
3 X3: bus-independent deactivation of the I/O modules
4 X2: 24 VDC redundant power supply (SELV/PELV)
5 X1: 24 VDC power supply (SELV/PELV)
X40 Terminal Assignment
Auxiliary energy for 4-channel digital outputs LB6*10* ... LB6*15* can be connected via the
booster connection.
X40.1 = 0 V

X40.2 = + 24 VDC (SELV/PELV)

X40.3 = earth

S1 Switch Positions and X3 Terminal Assignment
The S1 switch and X3 terminal control the bus-independent deactivation of the I/O modules.
The bus-independent deactivation of the I/O modules only works for I/O modules equipped
with a shutdown input. I/O modules with and without a shutdown input can be installed on the
same backplane; however, only the I/O modules that are equipped with a shutdown input are
controlled by the bus-independent deactivation.
If I/O modules equipped with a shutdown input are installed on the backplane, these modules
can be deactivated using an external switch, for example.
Caution!
Damage to Equipment
Handling the connections improperly can damage the backplane.
Never supply a control voltage to X3.2.

Only operate multiple adjacent backplanes using a common control voltage or a common

contact to avoid equalizing currents.
Figure 3.3
1 2 3 4
1 2 3
X3 terminals and S1 function switches
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