Omron Sysmac NX-PD1000 User Manual page 84

4 Installation and Wiring
• 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
<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.
NX-series
NX1P2
CPU Unit
Unit Power
Supply
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.
4 - 24
CPU Unit block
NX Unit connected
to the CPU Unit
NX Unit power supply
Internal power
supply circuit
Unit power Internal power
supply terminals supply circuit
Additional NX Unit Power
Supply Unit block
NX Unit connected to the Additional
NX Unit Power Supply Unit
NX Unit power supply
Unit power supply terminals
Additional NX Unit
Power Supply Unit
NX-series System Units User's Manual (W523)
End Cover