Omron NX Series Hardware User Manual

Internal circuits
NX Unit power supply
NX-series
NX502 CPU Unit
Unit power supply
(24 VDC)
I_unit1 + I_unit2
End
Cover
I/O power supply
I/O power supply
terminals
External
device
External device
I_unit2
I_io1
Unit power supply terminals
I_io2
Additional
I/O Power
Supply Unit
1
Additional
I/O Power
Supply Unit
2
Additional
NX Unit
Power
Supply Unit
Protective
device
Protective
device
Protective
device
Unit power supply
terminals
Unwired terminal
I_unit1
I/O power
supply
terminals
Block that the CPU Unit supplies Unit power supply.
Block that an Additional NX Unit Power Supply
Unit supplies Unit power supply.
Block that an Additional I/O
Power Supply Unit 1
supplies I/O power supply.
Block that an Additional I/O
Power Supply Unit 2
supplies I/O power supply.
NX Unit power supply
Internal
power
supply
circuit
Power
supply
I/O power supply
(24 VDC, etc.)
I/O power supply
Internal
circuits
*1. The minimum value is selected among the rated currents of the multiple I/O Power Supply Units connected to
the protective device. If, for example, two rated currents of 10 A and 4 A are used, 4 A will be selected.
• When T
otal Current Consumption for All Blocks Does Not Exceed the Rated Current
In this example, the current consumption from each power supply is as follows:
Current consumption from Unit power supply: I_unit1 + I_unit2 ≤ Lowest rated current
Current consumption from I/O power supply for NX Units: I_io1 + I_io2 ≤ Lowest rated current
*1
4 Designing the Power Supply System
4-27
NX-series NX502 CPU Unit Hardware User's Manual (W629)
4-4 Selecting External Power Supplies and Protective Devices
4
4-4-3 Selecting Protective Devices

Omron NX Series Specifications

General

Brand	Omron
Model	NX Series
Category	Controller
Language	English