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Application Precautions
5
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4
Operating Environment Precautions
Caution
Do not operate the control system in the following places:
Locations subject to direct sunlight
Locations subject to temperature or humidity outside the range specified
in the specifications
Locations subject to condensation as the result of severe changes in
temperature
Locations subject to corrosive or flammable gases
Locations subject to dust (especially iron dust) or salts
Locations subject to exposure to water, oil, or chemicals
Locations subject to shock or vibration
Caution
Take appropriate and sufficient countermeasures when installing systems in
the following locations:
Locations subject to static electricity or other forms of noise
Locations subject to strong electromagnetic fields
Locations subject possible exposure to radioactivity
Locations close to power supplies
Caution
The operating environment of the PC System can have a large effect on the
longevity and reliability of the system. Improper operating environments can
lead to malfunction, failure, and other unforeseeable problems with the PC
System. Be sure that the operating environment is within the specified
conditions at installation and remains within the specified conditions during
the life of the system.
5
Application Precautions
Observe the following precautions when using the PC.
WARNING
Always heed these precautions. Failure to abide by the following
precautions could lead to serious or possibly fatal injury.
Always connect to a class-3 ground (to 100
or less) when installing the
Units. Not connecting to a class-3 ground may result in electric shock.
Always turn OFF the power to the PC before attempting any of the
following. Not turning OFF the power may result in malfunction or electric
shock.
Mounting or dismounting I/O Units
Assembling the Units
Setting DIP switches or unit number setting switches
Connecting or wiring the cables
Connecting or disconnecting the connectors