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5
•
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.
WARNING
When handling the Memory Backup Battery, never drop, disassemble, distort,
short-circuit, recharge, heat to a temperature exceeding 100
°
C, or throw into
fire. Otherwise the Battery may explode, catch fire, or leak fluid.
WARNING
When transferring programs to other nodes, or when making changes to I/O
memory, confirm the safety of the destination node before transfer. Not doing so
may result in injury.
Caution
Execute online edit only after confirming that no adverse effects will be caused
by extending the cycle time. Otherwise, the input signals may not be readable.
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 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 connect to a ground such that the grounding resistance does not ex-
ceed 100
Ω
when installing the Units. Not connecting to the correct ground
may result in electric shock.
Summary of Contents for CPM2C
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