Pepperl+Fuchs LB Series - X3 Terminals and S1 Function Switches for I;O Control

LB Remote I/O System
Installation
2018-07
33
Figure 3.9 X3 terminals and S1 function switches
 X3.1 = 0 V
 X3.2 = 12 VDC ... 24 VDC galvanically isolated control voltage (SELV/PELV), see
Figure 3.4 on page 26, item 1
Control current = n x voltage / 5.6 K (where n = number of I/O modules equipped with a
shutdown input)
 X3.1 to X3.3 for external, volt-free contact, galvanically isolated from other contacts and
potentials, see Figure 3.4 on page 26, item 2. This separation also applies to other
contacts from other backplanes, unless this involves interconnecting the base backplane
and the extension backplane, see Figure 3.4 on page 26, item 3. The status
information for the external contact can be read in using the LB1*08* I/O module.
Figure 3.10 Steuereingang X3
Caution!
Damage to Equipment
Handling the connections improperly can damage the backplane.
 Never supply a control voltage to X3.2 when the S1 switch is closed (S1.x = ON).
 Only operate multiple adjacent backplanes using a common control voltage or a common
contact to avoid equalizing currents.
S1.1 S1.2
ON ON Deactivation of the I/O modules is disabled.
OFF OFF Deactivation of the I/O modules equipped with a shutdown input is
controlled by a control voltage at X3.
ON OFF Deactivation of the I/O modules equipped with a shutdown input is
controlled by a voltage-free contact at X3.
1 Steuerung für 2 Backplanes
2 Steuerung für 2 Backplanes mit gemeinsamen Kontakt
 Basis- und Erweiterungs-Backplane können entweder von 1 oder 2 gesteuert
werden.
 2 Backplanes mit einem größeren Abstand können nur von 1 gesteuert werden.
1234
123
X 3.1 3.2 3.3 X 3.1 3.2 3.3 X 3.1 3.2 3.3 X 3.1 3.2 3.3
1 2