Omron NX701-1620, User Manual

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4 Installation and Wiring
4 - 32 NX-series CPU Unit Hardware User’s Manual (W535)
 AC Power Supply
• Supply 100 to 240 VAC.
• Use the Power Supply Unit of the voltage and frequency shown in the table below.
• If one power supply phase of the equipment is grounded, connect the grounded phase side to the
L2/N terminal.
 Isolation Transformer
The Controller’s internal noise isolation circuits are sufficient to control typical noise in power supply
lines. Noise between the Controller and ground can be significantly reduced by connecting a 1- to-1
isolation transformer. Do not ground the secondary coil of the transformer.
 Power Supply Capacity
The power consumption will be 150 VA maximum per Rack for the NX-PA9001. When you select the
power supply, consider that inrush current will flow when the power is turned ON.
Refer to 3-3-1 Models and Specifications on page 3-11 for inrush current specifications.
 RUN Output
This output is ON when the CPU Unit is operating; it is OFF when the CPU Unit is in PROGRAM
mode or a Controller error in the major fault level occurs.
The RUN output can be used to control external systems, such as in an emergency stop circuit that
turns OFF the power supply to external systems when the CPU Unit is not operating. (Refer to
4-2
Fail-safe Circuits on page 4-6 for more information.)
Refer to NX7-series Power Supply Units on page 3-11 for switching capacity specifications for con-
tacts.
 Terminal Screws and Crimp Terminals
The terminals on the Power Supply Unit are M4, self-raising terminals with screws.
Use crimp terminals (M4) having the dimensions shown below. Tighten the terminal block screws to
the torque of 1.2 N·m.
Model Power supply voltage
NX-PA9001 100 to 240 VAC 50/60 Hz (85 to 264 VAC, 47 to 63 Hz)
7 mm max.
M4 self-raising screw terminals
Torque to 1.2 N
⋅
m
20 mm max.