Intended Audience; General Precautions; Safety Precautions - Omron CJ1W-CT021 Operation Manual

Intended Audience

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Intended Audience

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General Precautions

!WARNING
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Safety Precautions

!WARNING
!WARNING
!WARNING
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This manual is intended for the following personnel, who must also have knowl-
edge of electrical systems (an electrical engineer or the equivalent).
• Personnel in charge of installing FA systems.
• Personnel in charge of designing FA systems.
• Personnel in charge of managing FA systems and facilities.
The user must operate the product according to the performance specifications
described in the operation manuals.
Before using the product under conditions which are not described in the manual
or applying the product to nuclear control systems, railroad systems, aviation sys-
tems, vehicles, combustion systems, medical equipment, amusement machines,
safety equipment, and other systems, machines, and equipment that may have a
serious influence on lives and property if used improperly, consult your OMRON
representative.
Make sure that the ratings and performance characteristics of the product are suf-
ficient for the systems, machines, and equipment, and be sure to provide the sys-
tems, machines, and equipment with double safety mechanisms.
This manual provides information for installing and operating OMRON High-
speed Counter Units. Be sure to read this manual before operation and keep this
manual close at hand for reference during operation.
It is extremely important that a PLC and all PLC Units be used for the specified
purpose and under the specified conditions, especially in applications that can
directly or indirectly affect human life. You must consult with your OMRON repre-
sentative before applying a PLC system to the above mentioned applications.
Never attempt to disassemble any Units while power is being supplied.
Doing so may result in serious electronic shock.
Never touch any of the terminals while power is being supplied.
Doing so may result in serious electronic shock.
Provide safety measures in external circuits (i.e., not in the Programmable Con-
troller), including the following items, to ensure safety in the system if an abnor-
mality occurs due to malfunction of the PLC unit. Not providing sufficient safety
measures may result in serious accidents.
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
• The PLC will turn OFF all outputs when its self-diagnosis function detects any
error or when a severe failure alarm (FALS) instruction is executed. Unexpected
operation, however, may still occur for errors in the I/O control section, errors in
I/O memory, and other errors that cannot be detected by the self-diagnosis
function. As a countermeasure for all such errors, external safety measures
must be provided to ensure safety in the system.
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