Omron NJ501-4300, Manual

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Safety Precautions
16 NJ-series NJ Robotics CPU Unit User’s Manual (W539)
If there is interference in remote I/O communications or if a major fault level error occurs,
output status will depend on the specifications of the product that is used.
Check the product's specifications and see what operation will occur when there is interfer-
ence in communications or a major fault level error, and implement safety measures.
Set the slave settings correctly for all EtherCAT slaves.
The NJ-series Controller continues normal operation for a certain period of time even when
a momentary power interruption occurs. This means that the NJ-series Controller may
receive incorrect signals from external devices that are also affected by the power interrup-
tion.
Accordingly, take suitable actions, such as external fail-safe measures and interlock condi-
tions, to monitor the power supply voltage of the external devices as required.
You must take fail-safe measures to ensure safety in the event of incorrect, missing, or
abnormal signals caused by broken signal lines, momentary power interruptions, or other
causes.
Not doing so may result in serious accidents due to incorrect operation.
Voltage and Current Inputs
Make sure that the voltages and currents that are input to the Units and slaves are within
the specified ranges.
Inputting voltages or currents that are outside of the specified ranges may cause accidents
or fire.
Downloading
Always confirm safety at the destination before you transfer a user program, configuration
data, setup data, device variables, or values in memory used for CJ-series Units from the
Sysmac Studio.
The devices or machines may perform unexpected operation regardless of the operating
mode of the CPU Unit.