Omron NX Series User Manual page 86

4 Installation and Wiring
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: I_io1+ I_io2 ≤ Lowest rated current
*1. This is the lowest rated current of all of the Units that supply I/O power and are connected to protective
devices. For example, if terminals with both a 10-A and 4-A capacities are connected, the value is 4 A.
EtherCAT
Coupler Unit
Unit power
supply
terminals
I_unit1
I_io1
Protective
device
Unit power
supply
4 - 26
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Block that is supplied I/O power from
the EtherCAT Coupler Unit
Block that is supplied
Unit power from the
EtherCAT Coupler
Unit
NX Unit
NX Unit power
supply
Internal
power
supply
circuit
I/O power supply
terminals
I_unit2
Protective
device
I/O power
supply
Block that is supplied
I/O power from an
Additional I/O Power
Supply Unit
Block that is supplied
Unit power from an
Additional NX Unit
Power Supply Unit
NX Unit power supply
Additional NX Unit Additional I/O Power
Power Supply Unit Supply Unit
Internal
power
supply
circuit
Unit power supply I/O power supply
terminals terminals
I_io2
NX-series System Unit User's Manual (W523)
*1