CJ-series PROFINET I/O Controller Unit Operation Manual for

Precautions for Correct Use

Storage, Mounting, and Wiring

• Do not operate or store the Controller in the following locations. Operation may stop or malfunctions may occur.

• Locations subject to direct sunlight

• Locations subject to temperatures or humidity outside the range specified in the specifications

• Locations subject to condensation as the result of severe changes in temperature

• Locations subject to corrosive or flammable gases

• Locations subject to dust (especially iron dust) or salts

• Locations subject to exposure to water, oil, or chemicals

• Locations subject to shock or vibration

• Take appropriate and sufficient countermeasures when installing the Controller in the following locations.

• Locations subject to strong, high-frequency noise

• Locations subject to static electricity or other forms of noise

• Locations subject to strong electromagnetic fields

• Locations subject to possible exposure to radioactivity

• Locations close to power lines

• Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any static build-up.

• Install the Controller away from sources of heat and ensure proper ventilation. Not doing so may result in malfunction, in operation stopping, or in burning.

• An I/O bus check error will occur and the Controller will stop if an I/O Connecting Cable’s connector is disconnected from the Rack. Be sure that the connectors are secure.

• Do not allow foreign matter to enter the openings in the Unit. Doing so may result in Unit burning, electric shock, or failure.

• Do not allow wire clippings, shavings, or other foreign material to enter any Unit. Otherwise, Unit burning, failure, or malfunction may occur. Cover the Units or take other suitable countermeasures, especially during wiring work.

• For EtherCAT and EtherNet/IP, use the connection methods and cables that are specified in the NJ-

series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) and the NJ-series CPU Unit

Built-in EtherNet/IP Port User’s Manual (Cat. No. W506). Otherwise, communications may be faulty.

• Use the rated power supply voltage for the Power Supply Units. Take appropriate measures to ensure that the specified power with the rated voltage and frequency is supplied in places where the power supply is unstable.

• Make sure that the current capacity of the wire is sufficient. Otherwise, excessive heat may be generated. When cross-wiring terminals, the total current for all the terminals will flow in the wire. When wiring cross-overs, make sure that the current capacity of each of the wires is not exceeded.

• Do not touch the terminals on the Power Supply Unit immediately after turning OFF the power supply.

Residual voltage may cause electrical shock.

• If you use reed switches for the input contacts for AC Input Units, use switches with a current capacity of 1 A or greater.

If the capacity of the reed switches is too low, surge current may fuse the contacts.

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CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)

Error Processing

• In applications that use the results of instructions that read the error status, consider the affect on the system when errors are detected and program error processing accordingly. For example, even the detection of a minor error, such as Battery replacement during operation, can affect the system depending on how the user program is written.

Unit Replacement

• If you replace a CPU Bus Unit or Special I/O Unit, refer to operation manual for the Unit for information on the data required for individual Units and redo the necessary settings.

• The absolute encoder home offset is backed up with a Battery in the CPU Unit.

When you change the combination of the CPU Unit and Servomotor, e.g., when you add or replace a

Servomotor, define home again.

To restore the information without changing the CPU Unit-Servomotor combination, remove the absolute encoder home offset from the data to restore.

Task Settings

• If a Task Period Exceeded error occurs, shorten the programs to fit in the task period or increase the setting of the task period.

Motion Control

• Use the system-defined variable in the user program to confirm that EtherCAT communications are established before you attempt to execute motion control instructions. Motion control instructions are not executed normally if EtherCAT communications are not established.

• Use the system-defined variables to monitor for errors in communications with the slaves that are controlled by the motion control function module. Motion control instructions are not executed normally if an error occur in slave communications.

• Before you start an MC Test Run, make sure that the operation parameters are set correctly.

• Do not download motion control settings during an MC Test Run.

EtherCAT Communications

• Do not disconnect the EtherCAT slave cables during operation. The outputs will become unstable.

• Set the Servo Drives to stop operation if an error occurs in EtherCAT communications between the

Controller and a Servo Drive.

Battery Replacement

• Be sure to install a replacement Battery within two years of the production date shown on the Battery label.

• Turn ON the power after replacing the Battery for a CPU Unit that has been unused for a long time.

Leaving the CPU Unit unused again without turning ON the power even once after the Battery is replaced may result in a shorter Battery life.

• When you replace the Battery, use the CJ1W-BAT01 Battery Set.

CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)

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SD Memory Cards

• Insert the SD Memory Card all the way.

• Do not turn OFF the power supply to the Controller during SD Memory Card access. The files may be corrupted.

If there is a corrupted file in the SD Memory Card, the file is automatically deleted by the restoration function when the power supply is turned ON.

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CJ-series PROFINET IO Controller Unit Operation Manual for NJ-series CPU Unit (W511)