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3
Safety Precautions
viii
1
Intended Audience
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.
2
General Precautions
The user must operate the product according to the performance specifications
described in the relevant 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
systems, vehicles, combustion systems, medical equipment, amusement ma-
chines, 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
sufficient for the systems, machines, and equipment, and be sure to provide the
systems, machines, and equipment with double safety mechanisms.
This manual provides information for programming and operating the Unit. Be
sure to read this manual before attempting to use the Unit and keep this manual
close at hand for reference during operation.
WARNING
It is extremely important that a PC and all PC 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
representative before applying a PC system to the above-mentioned
applications.
3
Safety Precautions
WARNING
Do not attempt to take any Unit apart while the power is being supplied. Doing so
may result in electric shock.
WARNING
Do not touch any of the terminals or terminal blocks while the power is being
supplied. Doing so may result in electric shock.
WARNING
Do not attempt to disassemble, repair, or modify any Units. Any attempt to do so
may result in malfunction, fire, or electric shock.
WARNING
Provide safety measures in external circuits (i.e., not in the Programmable
Controller), including the following items, in order to ensure safety in the system
if an abnormality occurs due to malfunction of the PC or another external factor
affecting the PC operation. Not doing so may result in serious accidents.
•
Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
•
The PC will turn OFF all outputs when its self-diagnosis function detects any
error or when a severe failure alarm (FALS) instruction is executed. As a coun-
termeasure for such errors, external safety measures must be provided to en-
sure safety in the system.
