Omron PROFINET NX-PNC202, User Manual

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5 Designing the Power Supply System
NX-series PROFINET Coupler Unit User’s Manual (W623)
5-1 Power Supply System
and Design Concepts
5
5-1-2 NX-series Power Supply-related Units
Precautions for Correct Use
Always use separate power supplies for the Unit power supply and the IO power supply. If you
supply power from the same power supply, noise may cause malfunctions.
The PROFINET Coupler Unit supplies the NX Unit power and IO power to the NX Units in the IO Device
Terminal. The Units that are related to power supply for the NX Series other than the PROFINET Cou-
pler Unit are listed in the following table.
For the specifications of NX-series power supply-related Units, refer to the
NX-series System Units
User’s Manual
(Cat. No. W523). For information on the most recent lineup of NX Series power sup-
ply-related Units, refer to NX-series catalogs or OMRON websites, or ask your OMRON representative.
5-1-2 NX-series Power Supply-related Units
Unit name Function
Additional NX Unit Power
Supply Unit
This NX Unit provides NX Unit power supply.
This NX Unit is used when the total power consumption of the NX Units in the IO
Device Terminal exceeds the NX Unit power supply capacity of the PROFINET Cou-
pler Unit.
The IO power supply for the Additional NX Unit Power Supply Unit is connected to
the NX Unit on the left through the NX bus connector.
PROFINET Coupler Unit
Unit power
supply
terminals
NX Unit
I/O power
supply
Unit power
supply
NX Unit power
supply
Additional NX Unit
Power Supply Unit
NX Unit power supply
Separated by Additional NX Unit Power Supply Unit
The total power consumption
from the NX Unit power supply
is within the NX Unit power
supply capacity.
The total power consumption
from the NX Unit power supply
is within the NX Unit power
supply capacity.
Internal
power
supply
circuit
Internal
power
supply
circuit