Omron NJ501-4300, Manual

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Precautions for Correct Use
NJ-series NJ Robotics CPU Unit User’s Manual (W539)
• Refer to the CPU Bus Unit and Special I/O Unit operation manuals for details on the data required by
each Unit.
• 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.
If a Task Period Exceeded error occurs, shorten the programs to fit in the task period or increase the
setting of the task period.
• 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 nor-
mally 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.
• 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.
• 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.
• 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.
Unit Replacement
Task Setup
Motion Control
EtherCAT Communications
Battery Replacement
SD Memory Card