Omron PROFINET NX-PNC202 User Manual page 134

7 Wiring
DIN Track Contact Plates
A Unit that has a ground terminal also has a DIN Track contact plate on the back of the Unit.
Unit side
Ground terminal
The DIN Track contact plate is connected internally to the ground terminal on the Unit.
This means that the ground terminal will be electrically connected to the DIN Track.
For information on the DIN Track contact plate on the PROFINET Coupler Unit, refer to 4-6 DIN Track
Contact Plate on page 4-12. For information on the NX Units that have a ground terminal, refer to the
NX-series System Units User's Manual (Cat. No. W523).
Grounding the Profinet IO Device Terminal
This section describes how to ground the ground terminals on the Profinet IO Device Terminal.
The functional ground terminals that are provided on some Units and the DIN Track are grounded.
PROFINET Coupler Unit
DIN Track
7 - 8
DIN Track contact plate
Connected inside the Unit.
Additional NX Unit Power Supply Unit
Electrically connected to the DIN Track
through the DIN Track contact plate.
Functional ground terminal
Ground
Shield Connection Unit
Functional
ground terminal
NX-series PROFINET Coupler Unit User's Manual (W623)
End Cover