Omron NXEIP202 User Manual page 147

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.
■
DIN Track Made of Steel and Surface Not Insulated
EtherNet/IP Coupler Unit
DIN Track
Precautions for Correct Use
• Ground the ground terminals and DIN Track through dedicated ground wires to a ground
resistance of 100 Ω or less. The ground wire should not be more than 20 m long. Use a
ground wire that is 2.0 mm
cable ground wires for screwless clamping terminal blocks.
• If the DIN Track is not made of steel or if the surface is treated to produce an insulating mate-
*1
rial , 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.
Grounding the DIN Track
Attach a crimped terminal to the ground wire and then connect it to mounting hole on the DIN Track with
a screw to ground the DIN Track.
Grounding the EtherNet/IP Slave Terminal with Peripheral Devices
and in Control Panels
Refer to 6-2-6 Grounding on page 6-31 for the grounding procedures for the EtherNet/IP Slave Termi-
nal with peripheral devices and in control panels.
Isolating the EtherNet/IP Slave Terminal from the Control Panel
If the ground wire for the EtherNet/IP Coupler Unit or an NX Unit with a ground terminal is shared with
power equipment, noise will adversely affect the Units.
You can use OMRON NX-AUX01 DIN Track Insulation Spacers with PFP-50N or PFP-100N DIN Tracks
to isolate an EtherNet/IP Slave Terminal from the control panel.
NX-series EtherNet/IP Coupler Unit User's Manual (W536)
Additional NX Unit Power Supply Unit
Electrically connected to the DIN Track
through the DIN Track contact plate.
Functional ground terminal
Ground
2
or larger. Refer to Applicable Wires on page 7-12 for the appli-
Shield Connection Unit
Functional ground terminals
7 Wiring
End Cover
7
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