5
Application Precautions
xvi
•
Install the Units properly as specified in the operation manuals. Improper
installation of the Units may result in malfunction.
•
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.
•
Leave the label attached to the Unit when wiring. Removing the label may re-
sult in malfunction if foreign matter enters the Unit.
•
Remove the label after the completion of wiring to ensure proper heat dissipa-
tion. 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 sup-
ply. Incorrect wiring may result in burning.
•
Mount Units only after checking terminal blocks and connectors completely.
•
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 preparations
before starting operation. Starting operation without the proper settings 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 operation.
•
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 PC.
•
Force-setting/force-resetting any bit in memory.
•
Changing the present value of any word or any set value in memory.
•
Resume operation only after transferring to the new CPU Unit the contents of
the DM Area, HR Area, and other data required for resuming operation. 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 objects 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 build-up. Not doing so may result in malfunction or dam-
age.
•
When transporting or storing circuit boards, cover them in antistatic material to
protect them from static electricity and maintain the proper storage tempera-
ture.
•
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 handled improperly.
•
Do not short the battery terminals or charge, disassemble, heat, or incinerate
the battery. Do not subject the battery to strong shocks. Doing any of these
may result in leakage, rupture, heat generation, or ignition of the battery. Dis-
pose of any battery that has been dropped on the floor or otherwise subjected
to excessive shock. Batteries that have been subjected to shock may leak if
they are used.
