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Use of the Interference-Free Module in Safety Applications
WAGO-SPEEDWAY 767
767-4803/000-800 8DO 24V DC 2.0A IF (8xM8)
Manual
Version 1.1.0
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11.3 Measures and Conditions for Shielded Power
Supply of the Module
Shielded version of U
A
and 0 V_U
A
in connecting lead for unprotected
installation required!
To prevent a short circuit of power supply U
A
with an external voltage, wires U
A
and 0 V_U
A
must be shielded in the connecting lead according to EN 60204-1 or
EN ISO 13849-2. The shield must have an overlap of at least 85 % and be reliably
connected to the connector.
Attach ground shield or use insulation monitoring!
The connecting lead ground shield and functional grounding connection of the
interference-free modules must be connected to lines 0 V_U
LS
and 0 V_U
A
. In
addition, insulation monitoring according to EN 61557 can also be used. See the
following illustrations:
Figure 22: Connection diagram for the common power supply
Figure 23: Connection diagram for the common power supply with insulation monitoring
Figure 24: Connection diagram for the isolated power supply
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Safety switch module
Safety switch module
Safety switch module
767-xxxx
767-xxxx
767-xxxx
Insulation
monitor
Fuse
Fuse
Fuse