Omron CJ - 10-2005 Manual page 25

Application Precautions
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Connection of bare stranded wires may result in
burning.
• Leave the label attached to the Unit when wiring. Removing the label may
result in malfunction.
• Remove the label after the completion of wiring to ensure proper heat dis-
sipation. Leaving the label attached may result in malfunction.
• Disconnect the functional ground terminal when performing withstand
voltage tests. Not disconnecting the functional ground terminal may result
in burning.
• Check the orientation and polarity of terminal blocks and connectors
before connecting them.
• Be sure that the terminal blocks, expansion cables, and other items with
locking devices are properly locked into place. Improper locking may
result in malfunction.
• Double-check all the wiring before turning ON the power supply. Incorrect
wiring may result in burning.
• 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 an unexpected operation.
• Changing the operating mode of the PLC.
• Force-setting/force-resetting any bit in memory.
• Changing the present value of any word or any set value in memory.
• Transfer any essential data for restarting the PLC, such as data memory
and hold bits to the CPU Unit before restarting the PLC.
• 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 objects on top of the cables. 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 the Unit, be sure to first touch a grounded metallic object
in order to discharge any static built-up. Not doing so may result in mal-
function or damage.
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