Omron NX-ECC201 User Manual

7 - 11
7 Wiring
NX-series EtherCAT Coupler Unit User’s Manual (W519)
7-2 Connecting the Power Supply and Ground Wires
7
7-2-3 Grounding the EtherCAT Slave Terminal
If the DIN Track is made of steel and the surface is not treated to produce an insulating material, you
can omit grounding the functional ground terminal on any Unit that has one, as shown in the following
figures.
Precautions for Correct Use
• Ground the ground terminals and DIN Track through dedicated ground wires to a ground
resistance of 100  or less. The ground wire should not be more than 20 m long. Use a
ground wire that is 2.0 mm
2
or larger. However, the wire must be 2.0 mm
2
and a ferrule or
twisted wire be used for the ground terminal on a screwless clamping terminal block.
• If the DIN Track is not made of steel or if the surface is treated to produce an insulating mate-
rial
*1
, always connect ground wires to the ground terminals. Otherwise, noise may cause
malfunctions.
*1. If the surface of the DIN Track is treated to produce an insulating material (e.g., anodized aluminum), the DIN
Track contact plate will not be electrically connected to the DIN Track even if they are in physical contact.
Secure the ground wire to a mounting hole on the DIN Track with screws to ground the DIN Track.
Refer to 6-2-6 Grounding on page 6-31 for the grounding procedures for the EtherCAT Slave Terminal
with peripheral devices and in control panels.
Grounding the DIN Track
Grounding the EtherCAT Slave Terminal with Peripheral Devices and
in Control Panels
EtherCAT Coupler Unit
■ DIN Track Made of Steel and Surface Not Insulated
Additional NX Unit Power Supply Unit
Functional ground terminal
Ground
DIN Track
Shield Connection Unit
Electrically connected to the DIN Track
through the DIN Track contact plate.
Functional ground terminals
End Cover

Omron NX-ECC201 Specifications

General

Brand	Omron
Model	NX-ECC201
Category	Controller
Language	English