Table of Contents
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Designing the Power Supply Sys-
tem
NX-series EtherCAT Coupler Unit User's Manual (W519)
This section describes how to design the power supply system for the EtherCAT Slave
Terminal.
5-1 Power Supply System and Design Concepts . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-1-1
Power Supply System and Types of Power Supplies . . . . . . . . . . . . . . . . . . . . 5-2
5-1-2
NX-series Power Supply-related Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5-1-3
Design Concepts for Power Supply to the EtherCAT Slave Terminal . . . . . . . . 5-5
5-2 Designing the NX Unit Power Supply System . . . . . . . . . . . . . . . . . . . . . . . 5-6
5-2-1
Procedure for Designing the NX Unit Power Supply System . . . . . . . . . . . . . . 5-6
5-2-2
Calculation Example for the NX Unit Power Supply . . . . . . . . . . . . . . . . . . . . . 5-7
5-3 Designing the I/O Power Supply System . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5-3-1
I/O Power Supply Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5-3-2
Designing the I/O Power Supply from the NX Bus . . . . . . . . . . . . . . . . . . . . . 5-10
5-3-3
Designing the I/O Power Supply from External Sources . . . . . . . . . . . . . . . . 5-14
5-4 Selecting External Power Supplies and Protective Devices . . . . . . . . . . 5-15
5-4-1
Selecting the Unit Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5-4-2
Selecting the I/O Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5-4-3
Selecting Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5
5 - 1
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