Omron Sysmac NX-TBX01, User Manual

Page: 84 / 172

4 Installation and Wiring
4 - 24 NX-series System Units User’s Manual (W523)
<Block>
The following shows the Unit that supplies NX Unit power and its supplying range. For example, the
CPU Rack in the following diagram is configured with two blocks: the CPU Unit block and the Addi-
tional NX Unit Power Supply Unit block.
The total Unit power supply capacity for these two blocks is the power supply capacity that the CPU
Rack requires.
Precautions for Correct Use
Select a Unit power supply with sufficient capacity by considering the inrush current when the
power is turned ON. Sometimes, the Unit power supply may not be turned ON caused by
inrush current when the power is turned ON.
• Required Unit power supply capacity of each block in the CPU Unit = (A + B)/C
• Unit power supply capacity of Additional NX Unit Power Supply Unit block = (D + E)/F
(A): Unit power consumption of a CPU Unit
(B): The total power consumption from the NX Unit power supply that is required by the NX Units that are connected to
the CPU Unit
(C): The NX Unit power supply efficiency of the CPU Unit
(D): NX Unit power consumption of the additional NX Unit Power Supply Unit
(E): Total power consumption from the NX Unit power supply that is required by the NX Units that are connected to the
Additional NX Unit Power Supply Unit
(F): NX Unit power supply efficiency of the Additional NX Unit Power Supply Unit
Internal power
supply circuit
CPU Unit block
Additional NX Unit Power
Supply Unit block
NX Unit connected to the Additional
NX Unit Power Supply Unit
Additional NX Unit
Power Supply Unit
Unit power
supply terminals
NX Unit connected
to the CPU Unit
Unit power supply terminals
End Cover
Unit Power
Supply
NX Unit power supply NX Unit power supply
NX-series
NX1P2
CPU Unit
Internal power
supply circuit