Omron NX Series Hardware User Manual page 130

4 Designing the Power Supply System
Block that the CPU Unit supplies Unit power supply.
Internal
circuits
Internal
power
supply
circuit
Unit power supply terminals
*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.
4-28
Block that an Additional I/O
Power Supply Unit 1
supplies I/O power supply.
Additional
NX-series
I/O Power
NX502 CPU Unit
Supply Unit
1
Internal circuits
NX Unit power supply
I/O power supply I/O power supply
I/O power
supply
terminals
Protective Protective
device device
Unit power supply I/O power supply
(24 VDC) (24 VDC, etc.)
Block that an Additional NX Unit Power Supply
Unit supplies Unit power supply.
Additional
NX Unit
Power
Supply Unit
Power
supply
External devices
I/O power
Unit power supply
supply
terminals
terminals
NX-series NX502 CPU Unit Hardware User's Manual (W629)
Block that an Additional I/O
Power Supply Unit 2
supplies I/O power supply.
Additional
I/O Power
Supply Unit
2
NX Unit power supply NX Unit power supply
I/O power supply I/O power supply
End
Cover
External devices