Omron NX-EIC202 - Designing the Power Supply System; 5-1 Power Supply System and Design Concepts; 5-2 Designing the NX Unit Power Supply System; 5-3 Designing the I;O Power Supply System

5 - 1
5
NX-series EtherNet/IP Coupler Unit User’s Manual (W536)
This section describes how to design the power supply system for the EtherNet/IP
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 EtherNet/IP 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
5-3-4 Restrictions on Inrush Current for ON/OFF Operation . . . . . . . . . . . . . . . . . . 5-14
5-4 Selecting External Power Supplies and Protective Devices . . . . . . . . . . 5-16
5-4-1 Selecting the Unit Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5-4-2 Selecting the I/O Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5-4-3 Selecting Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Designing the Power Supply Sys-
tem