Designing The I/O Power Supply System; I/O Power Supply Method - Omron NX-ECC201 User Manual

5-3 Designing the I/O Power Supply Sys-
tem
This section describes how to design the I/O power supply to the EtherCAT Slave Terminal.
5-3-1

I/O Power Supply Method

There are the following two methods to supply the I/O power supply to the EtherCAT Slave Terminal
depending on the type and model of the NX Units.
Supply method
Supply from the NX bus Power is supplied through the NX bus connectors by connecting an I/O power supply
Supply from external
source
Refer to the user's manuals for individual NX Units or to the NX-series Data Reference Manual (Cat.
No. W525) for the power supply method for specific NX Units.
An example is shown below.
I/O power supply
terminals
I/O power
supply
(DC)
NX-series EtherCAT Coupler Unit User's Manual (W519)
to the I/O power supply terminals on the EtherCAT Coupler Unit or Additional I/O
Power Supply Units.
Power is supplied to the Units from an external source.
I/O power is supplied by connecting an I/O power supply to the terminal blocks on the
Units.
Supplied from the NX bus.
EtherCAT DC Input
Relay
Coupler Unit Unit
Output
Unit
Terminal block
External
input
External
device
output
device
I/O power supply (AC)
Supplied from external source.
5 Designing the Power Supply System
Description
Relay Transistor
Output Output Unit
Unit
End Cover
External
output
External
device
output
device
Terminal block
5
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