Omron PROFINET NX-PNC202 User Manual page 120

6 Installation
Example of Recommended Equipment Arrangement
OK
Control panel
NG
Control panel
Examples of Equipment Arrangement in Panel with High-voltage Devices
Arrangement of Profinet IO Device Terminal and Cables
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 Profinet IO Device Terminal. Locate them at least 100 mm
away from the Profinet IO Device Terminal.
PROFINET
Coupler Unit
DC I/O
device
Example of Arrangement in Panel
Wire Layout for the Power Supply System
Observe the following points when wiring the power supply system.
• Separate the Profinet IO Device Terminal power supply from the IO device power supply and install a
noise filter near the power supply feed section.
• Use an isolating transformer to significantly reduce noise between the Profinet IO Device 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.
6 - 26
PROFINET
IO Device
Control panel
Example of Poor Equipment Arrangement
Control panel
AC I/O
device
Terminal block
High-voltage
power panel
PROFINET
IO Device
High-voltage
power panel
NX-series PROFINET Coupler Unit User's Manual (W623)