Omron CJ1W-ID Series User Manual page 23

Task Design
• If the following variables are specified for a condition expression when the execution condition is a
condition expression for a variable, event tasks may not be executed when conditions are met or
event tasks may be executed when conditions are not met.
• Structure members whose data size is 16 bits or more, except for system-defined variables for
motion control
• Array elements whose data size is 16 bits or more
For information on event task execution conditions, refer to the NJ/NX-series CPU Unit Software
User's Manual (Cat. No. W501).
Power Supply Design
• Do not exceed the rated supply capacity of the Power Supply Units in the NJ-series Controller. The
rated supply capacities are given in the NJ-series CPU Unit Hardware User's Manual (Cat. No.
W500).
If the capacity is exceeded, operation may stop, malfunctions may occur, or data may not be backed
up normally for power interruptions.
Use NJ-series Power Supply Units for both the NJ-series CPU Rack and Expansion Racks.
Operation is not possible if a CJ-series Power Supply Unit is used with an NJ-series CPU Unit or an
NJ-series Power Supply Unit is used with a CJ-series CPU Unit.
• Do not apply voltages or connect loads to the Output Units or slaves in excess of the maximum rat-
ings.
• Surge current occurs when the power supply is turned ON. When selecting fuses or breakers for
external circuits, consider the above precaution and allow sufficient margin in shut-off performance.
Refer to the relevant manuals for surge current specifications. Refer to the NJ-series CPU Unit Hard-
ware User's Manual (Cat. No. W500) for surge current specifications.
• If the full dielectric strength voltage is applied or turned OFF using the switch on the tester, the gener-
ated impulse voltage may damage the Power Supply Unit. Use the adjustment on the tester to grad-
ually increase and decrease the voltage.
• Apply the voltage between the Power Supply Unit's L1 or L2 terminal and the GR terminal when test-
ing insulation and dielectric strength.
• Do not supply AC power from an inverter or other device with a square-wave output. Internal tem-
perature rise may result in smoking or burning. Always input a sinusoidal wave with the frequency
that is given in the NJ-series CPU Unit Hardware User's Manual (Cat. No. W500).
• Install external breakers and take other safety measures against short-circuiting in external wiring.
NJ-series CPU Unit Hardware User's Manual (W500)
Precautions for Safe Use
21