Omron NX1P2 series User Manual page 132

4 Designing the Power Supply System
• When Total 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 ≤ 4 A (rated current for I/O
power supply)
Block that the CPU Unit supplies Unit power supply.
Unit power supply
terminals
○
Internal
power
supply
circuit
Cn(+V)/0Vn
terminal
PNP (sourcing)
type only
Protective
device
Unit power
supply
(24 VDC)
4 - 24
Block that an Additional I/O
Power Supply Unit 1 supplies
I/O power supply.
Additional
NX-series
I/O Power
NX1P2 CPU
Supply
Unit
Unit 1
Internal
circuits
NX Unit power supply
I/O power
supply
Built-in I/O
○ ○
I/O power
supply
terminal
Protective
device
I/O power supply
(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
terminal
NX-series NX1P2 CPU Unit Hardware User's Manual (W578)
Block that an Additional I/O
Power Supply Unit 2 supplies
I/O power supply.
Additional
I/O Power
Supply
Unit 2
I/O power
NX Unit power supply
supply
○ ○ ○ ○
External devices
End
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