Omron NSJ CONTROLLERS - 03-2008 Operation Manual page 24

Application Precautions
• 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.
• Be sure that all the terminal screws, and cable connector screws are tight-
ened to the torque specified in the relevant manuals. Incorrect tightening
torque may result in malfunction.
• Wire all connections correctly.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals. Connection of bare stranded wires may result in
burning.
• 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.
• Always use the power supply voltages specified in this operation manuals.
An incorrect voltage may result in malfunction or burning.
• Double-check all wiring and switch settings before turning ON the power
supply.
• When assembling and wiring connectors, check all pin numbers carefully
and wire them correctly.
• Perform all wiring according to the methods given in this and other relative
manuals.
• Always use the special cables listed in this manual or make cables
according to manual specifications. Using commercially available cables
may damage the external devices or the NSJ Controller.
• Confirm the safety of the system before turning ON or OFF the power
supply or before pressing the reset button.
• Always reset the power supply after changing switch settings.
• Leave the label attached to an I/O Unit when wiring it. 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.
• Do not apply voltages to the Input Units in excess of the rated input volt-
age. Excess voltages may result in burning.
• Do not apply voltages or connect loads to the Output Units in excess of
the maximum switching capacity. Excess voltage or loads may result in
burning.
• The user program and parameter area data is backed up in the internal
flash memory. The BKUP indicator will light on the NSJ Controller when
the backup operation is in progress. Do not turn OFF the power supply to
the NSJ Controller when the BKUP indicator is lit. The data will not be
backed up if power is turned OFF.
• Start actual system application only after sufficiently checking screen
data, macros, and the operation of the program in the Controller Section.
• When replacing the NSJ Controller, resume operation only after transfer-
ring to the new Display Section and Controller Section all data required for
resuming operation. Not doing so may result in an unexpected operation.
• When using a program for which errors in the Display Section would affect
control operations, monitor for errors in the status area of the Display Sec-
tion and make sure that operation functions on the safe side if an error
occurs.
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