Omron SYSMAC C200H, Руководство по эксплуатации

Страница: 12 / 374

!
!
!
!
5 Application Precautions
xv
•
The PC outputs may remain ON or OFF due to deposition or burning of the
output relays or destruction of the output transistors. As a countermeasure for
such problems, external safety measures must be provided to ensure safety in
the system.
•
When the 24-VDC output (service power supply to the PC) is overloaded or
short-circuited, the voltage may drop and result in the outputs being turned
OFF. As a countermeasure for such problems, external safety measures must
be provided to ensure safety in the system.
4 Operating Environment Precautions
Caution Do not operate the control system in the following locations:
•
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 tempera-
ture.
•
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 lon-
gevity 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 installa-
tion 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 ground the system to 100
Ω
or less when installing the Units. Not con-
necting to a ground of 100
Ω
or less may result in electric shock.
•
Always turn OFF the power supply to the PC before attempting any of the fol-
lowing. Not turning OFF the power supply may result in malfunction or electric
shock.
•
Mounting or dismounting Power Supply Units, I/O Units, CPU Units,
Memory Units, or any other Units.
•
Assembling the Units.
•
Setting DIP switches or rotary switches.
•
Connecting cables or wiring the system.
•
Connecting or disconnecting the connectors.