Omron NX-EIC202 - Page 133

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6 Installation
NX-series EtherNet/IP Coupler Unit User’s Manual (W536)
6-2 Control Panel Installation
6
6-2-5 Electrical Environment
Observe the following points.
• The coils and contacts in electromagnetic contactors and relays in an external circuit are sources of
noise. Do not install them close to the EtherNet/IP Slave Terminal. Locate them at least 100 mm
away from the EtherNet/IP Slave Terminal.
Observe the following points when wiring the power supply system.
• Separate the EtherNet/IP Slave Terminal power supply from the I/O device power supply and install a
noise filter near the power supply feed section.
• Use an isolating transformer to significantly reduce noise between the EtherNet/IP Slave Terminal
and the ground. Install the isolating transformer between a power supply and the noise filter, and do
not ground the secondary coil of the transformer.
Arrangement of EtherNet/IP Slave Terminal and Cables
Wire Layout for the Power Supply System
Example of Recommended Equipment Arrangement
Control panel Control panel High-voltage
power panel
Examples of Equipment Arrangement in Panel with High-voltage Devices
Example of Poor Equipment Arrangement
Control panel Control panel High-voltage
power panel
EtherNet/IP
Slave
Terminal
EtherNet/IP
Slave
Terminal
OK
NG
Example of Arrangement in Panel
DC I/O
device
AC I/O
device
Terminal block
EtherNet/IP
Coupler Unit
DC Unit
DC Unit
AC Unit AC Unit