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Terminal
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Terminal
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• The angle at which you insert a screwdriver in the release holes on the screwless clamping terminal
blocks of the CPU Unit is different from that on the screwless clamping terminal blocks of NX Units.
Check the wiring method for the NX Unit and perform wiring correctly. Refer to the user’s manual of
the specific NX Unit for how to wire an NX Unit.
Power Supply Design
• Select an external power supply with sufficient capacity by considering the power supply capacity or
inrush current when the power is turned ON that is specified in this manual.
Otherwise, the external power supply may not be turned ON or malfunction due to unstable power
supply voltage.
• Use the I/O power supply current for the CPU Rack of NX1P2 CPU Unit at 4 A or less. Using the
currents that are outside of the specifications may cause failure or damage.
• Use all Units within the I/O power supply ranges that are given in the specifications.
• Do not apply voltages that exceed the rated value to any Input Unit, slave, or input built in the CPU
Unit.
• Do not apply voltages or connect loads to the Output Units, slaves, or CPU Unit’s internal outputs in
excess of the ratings.
• Surge current occurs when the power supply is turned ON. When selecting fuses or breakers for
external circuits, consider the above precaution and allow sufficient margin in shut-off performance.
Refer to this manual for surge current specifications.
• If the full dielectric strength voltage is applied or turned OFF using the switch on the tester, the gen-
erated impulse voltage may damage the Power Supply Unit. Use the adjustment on the tester to
gradually increase and decrease the voltage.
• Install external breakers and take other safety measures against short-circuiting and overcurrents in
external wiring.
• Do not apply voltages or connect loads in excess of the maximum switching capacity.
Turning ON the Power Supply
• It takes approximately 20 seconds to enter RUN mode after the power supply is turned ON. During
that time, digital outputs on the CPU Rack will be OFF. The slave outputs behave according to the
setting values.
Use the system-defined variables and the NX Unit device variables in the user program to confirm
that I/O data communications are established before attempting control operations. External com-
munications are also not performed during startup.
• Configure the external circuits so that the power supply to the control system turns ON only after the
power supply to the Controller has turned ON. If the power supply to the Controller is turned ON
after the control power supply, temporary errors may result in incorrect control system signals
Precautions for Safe Use
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NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
Содержание NX1P2 series
Страница 8: ...Manual Structure 6 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 52: ...Revision History 50 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 82: ...2 System Configuration 2 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 170: ...a b Flat blade screwdriver 1 2 5 Installation and Wiring 5 26 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 174: ...4 Close the Memory Card cover 5 Installation and Wiring 5 30 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 176: ...4 Close the Memory Card cover 5 Installation and Wiring 5 32 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 224: ...0 4 mm Side view Front view 2 5 mm 5 Installation and Wiring 5 80 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 258: ...Appendices A 10 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 259: ...I Index I 1 NX series NX1P2 CPU Unit Hardware User s Manual W578 I...
Страница 262: ...Index I 4 NX series NX1P2 CPU Unit Hardware User s Manual W578...
Страница 263: ......