Omron CJ1W-PRT21 Operation Manual page 15

Application Precautions
!Caution
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• Be sure that all mounting screws, terminal screws, and cable connector
screws are tightened to the torque specified in the relevant manuals.
Incorrect tightening may result in malfunction.
• Leave the label attached to the Unit when wiring. Removing the label may
result in malfunction if foreign matter enters the Unit.
• Remove the label after the completion of wiring to ensure proper heat dis-
sipation. Leaving the label attached may result in malfunction.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Connection of bare stranded wires may result in
burning.
• Wire all connections correctly. Double-check all wiring and switch settings
before turning on the power supply. Incorrect wiring may result in burning.
• Mount Units only after checking terminal blocks and connectors com-
pletely.
• Be sure that the terminal blocks, Memory Units, expansion cables, and
other items with locking devices are properly locked into place. Improper
locking may result in malfunction.
• Check switch settings, the contents of the DM Area, and other prepara-
tions before starting operation. Starting operation without the proper set-
tings or data may result in an unexpected operation.
• Check the user program for proper execution before actually running it on
the Unit. Not checking the program may result in an unexpected opera-
tion.
• Confirm that no adverse effect will occur in the system before attempting
any of the following. Not doing so may result in unexpected operation.
• Changing the operating mode of the PC.
• Force-setting/force-resetting any bit in memory.
• Changing the present value of any word or any set value in memory.
• Resume operation with a new CPU Unit only after transferring the con-
tents of the DM Area, H Area, and other data required for resuming oper-
ation to the new Unit. Not doing so may result in an unexpected
operation.
• Do not pull on the cables or bend the cables beyond their natural limit.
Doing either of these may break the cables.
• Do not place object on top of the cables or other wiring lines. Doing so
may break the cables.
• When replacing parts, be sure to confirm that the rating of a new part is
correct. Not doing so may result in malfunction or burning.
• Before touching a Unit, be sure to first touch a grounded metallic object in
order to discharge any static built-up. Not doing so may result in malfunc-
tion or damage.
• Do not touch circuit boards or the components mounted to them with your
bare hands. There are sharp leads and other parts on the boards that
may cause injury if handed improperly.
• Provide proper shielding when installing in the following locations:
• Locations subject to static electricity or other sources of noise.
• Locations subject to strong electromagnetic fields.
• Locations subject to exposure to radiation.
• Locations near power supply lines.
• Do not attempt to take any Units apart, to repair any Units, or to modify
any Units in any way.
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