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SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full attention
to safety to handle the product correctly.
The precautions given in this manual are concerned with this product only. For the safety precautions of the
programmable controller system, refer to the user's manual for the CPU module used.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
[Design Precautions]
[Design Precautions]
WARNING
● When a safety programmable controller detects an error in an external power supply or a failure in
programmable controller main module, it turns off all the outputs. Create an external circuit to securely
stop the power of hazard by turning off the outputs. Incorrect configuration may result in an accident.
● To inhibit restart without manual operation after safety functions was performed and outputs were
turned off, create an interlock program which uses a reset button for restart.
● If CC-Link IE Field Network error has been detected, create a sequence program that turns off the
outputs in the program. If the CC-Link IE Field Network is restored with the outputs on, it may
suddenly operate and result in an accident.
CAUTION
● Do not bunch the wires of external devices or communication cables together with the main circuit or
power lines, or install them close to each other. They should be installed 100 mm (3.94 inch) or more
from each other. Not doing so could result in noise that would cause malfunctions.
WARNING
CAUTION
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in minor or moderate injury or property damage.