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xviii
Operating Environment Precautions
4
4
Operating Environment Precautions
!Caution
Do not operate the control system in the following places:
• Locations subject to direct sunlight.
• Locations subject to temperatures or humidity outside the range specified
in the specifications.
• Locations subject to condensation as the result of severe changes in tem-
perature.
• 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 to 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 condi-
tions 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 System.
!WARNING
Always heed these precautions. Failure to abide by the following precautions
could lead to serious or possibly fatal injury.
• Always connect to a ground such that the grounding resistance does not
exceed 100
Ω
when installing the Units. Not connecting to the correct
ground may result in electric shock.
• Always turn OFF the power supply to the PC before attempting any of the
following. Not turning OFF the power supply may result in malfunction or
electric shock.
• Assembling the Units.
• Connecting or disconnecting the Expansion I/O Units or Expansion
Units.
• Connecting or wiring the cables.
• Connecting or disconnecting the connectors.
• Setting DIP switches.
• Replacing the battery
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