Application Precautions - Omron C200H-MC221 Operation Manual

Application Precautions

! Caution
! Caution
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Application Precautions

WARNING
!
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.
The operating environment of the MC Unit can have a large effect on the longev-
ity and reliability of the system. Improper operating environments can lead to
malfunction, failure, and other unforeseeable problems with the MC Unit. 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.
Observe the following precautions when using the MC Unit or the PC.
Failure to abide by the following precautions could lead to serious or possibly
fatal injury. Always heed these precautions.
• Always ground the system to 100 Ω or less when installing the system to pro-
tect against electrical 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 I/O Units, CPU Units, Memory Cassettes, or any
other Units.
• Assembling the Units.
• Setting DIP switches or rotary switches.
• Connecting or wiring the cables.
• Connecting or disconnecting the connectors.
Failure to abide by the following precautions could lead to faulty operation or the
MC Unit or the system or could damage the MC Units or PC Units. Always heed
these precautions.
• Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes.
• Provide external interlock circuits, limit circuits, and other safety circuits in
addition to any provided within the PC to ensure safety.
• Provide circuit breakers and other safety measures to provide protection
against shorts in external wiring.
• Be sure that all the mounting screws, terminal screws, and cable connector
screws are tightened to the torque specified in the relevant manuals. Incorrect
tightening torque may result in malfunction.
• Mount the Units only after confirming that connectors are properly connected.
• Always use the power supply voltage specified in the operation manuals. An
incorrect voltage may result in malfunction or burning.
• Take appropriate measures to ensure that the specified power with the rated
voltage and frequency is supplied. Be particularly careful in places where the
power supply is unstable. An incorrect power supply may result in malfunction.
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