Pepperl+Fuchs LB Series Manual page 29

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.
The backplanes are divided into five areas. Each area monitors different slots on the
backplane. If I/O modules equipped with a shutdown input are installed on the backplane, the
individual areas can be deactivated using an external switch.
Caution!
Damage to Equipment
Handling the connections improperly can damage the backplane.
Never supply a control voltage to X3.1 ... X3.5. On backplanes LB9022S and LB9024S,

bus-independent deactivation of the I/O modules can be controlled by a volt-free contact
only.
Only operate multiple adjacent backplanes using a common contact to avoid equalizing

currents.
Figure 3.7
1 2 3 4
1 2 3 4
1 2 3
Steuereingang X3 und DIP-Schalter S1.1 ... S1.5
5
5 6
4 5
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