Omron NX-EIC202 User Manual

5 Designing the Power Supply System
5 - 18
NX-series EtherNet/IP Coupler Unit User’s Manual (W536)
Precautions for Correct Use
Consider the inrush current when the power supply is turned ON and select a Unit power sup-
ply with sufficient extra capacity. The inrush current when power is turned ON may prevent the
Unit power supply from operating correctly.
This section describes how to select the I/O power supplies for the EtherNet/IP Slave Terminal.
Use an SELV power supply that meets the following conditions for the I/O power supply.
• Has overcurrent protection.
• Has double or reinforced insulation between the input and output.
• Has an output voltage of 5 to 24 VDC (4.5 to 28.8 VDC).
*1. Use an output voltage that is appropriate for the I/O circuits of the NX Units and the connected external
devices.
Recommended Power Supplies: S8JX Series (manufactured by OMRON)
Use the calculation method that is described in 5-3 Designing the I/O Power Supply System on page
5-9 and calculate the total current consumption from the I/O power supply and the required power sup-
ply capacity of the I/O power supply.
Unlike the Unit power supply, it is not necessary to use only one I/O power supply to supply power to
the entire Slave Terminal.
Precautions for Correct Use
Consider the inrush current when the power supply is turned ON and select an I/O power sup-
ply with sufficient extra capacity. The inrush current when power is turned ON may prevent the
I/O power supply from operating correctly.
This section describes how to select protective devices (e.g., breakers and fuses) to protect against
short circuits and overcurrents in external circuits.
Overcurrent is the current that flows when an excessive load is connected and one of the following rat-
ings is exceeded.
• For the Unit power supply, the rating of the NX Unit power supply capacity or of the current capacity
of the power supply terminals
• For the I/O power supply, the rating of the maximum I/O power supply current or of the current capac-
ity of the power supply terminals
For the above ratings for the EtherNet/IP Coupler Unit, refer to 3-1-2 EtherNet/IP Coupler Unit Specifi-
cations on page 3-3. For the ratings of NX-series power supply-related Units, refer to the NX-series
System Units User’s Manual (Cat. No. W523).
5-4-2 Selecting the I/O Power Supplies
Recommended Power Supplies
Calculating the Required Power Supply Capacity of the I/O Power
Supply
5-4-3 Selecting Protective Devices

Omron NX-EIC202 Specifications

General

Brand	Omron
Model	NX-EIC202
Category	Controller
Language	English