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Application Precautions 5
• Be sure to perform wiring in accordance with the CPM2C Operation Man-
ual. Incorrect wiring may result in burning.
• Use specified connectors and wiring materials (connector models: C500-
CE241/C500-CE242/C500-CE243; terminal block models: AWG28-16
with stripped length of 7 mm; Power Supply Unit terminal block: AWG22-
14 with stripped length of 7 mm).
• Do not apply voltages to the input terminals in excess of the rated input
voltage. Excess voltages may result in burning.
• Do not apply voltages or connect loads to the output terminals in excess
of the maximum switching capacity. Excess voltage or loads may result in
burning.
• Install external breakers and take other safety measures against short-cir-
cuiting in external wiring. Insufficient safety measures against short-cir-
cuiting may result in burning.
• Always use the power supply voltage specified in the operation manuals.
An incorrect voltage may result in malfunction or 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.
• Double-check all wiring and switch settings before turning ON the power
supply. Incorrect wiring or switch settings may result in burning.
• 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.
• 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.
• Do not pull on the cables or bend the cables beyond their natural limit.
Doing either of these may break the cables.
• Do not apply forces exceeding 50 N to connector sections.
• Do not place objects on top of the cables. Doing so may break the cables.
• Resume operation only after transferring to the new CPU Unit the con-
tents of the DM and HR Areas required for resuming operation. Not doing
so may result in an unexpected operation.
• Install the Unit properly as specified in the operation manual. Improper
installation of the Unit may result in malfunction.
• When transporting the Units, use special packing boxes. Be careful not to
apply excessive vibration or shock during transportation and not to drop
the product.
• Store the Units within the following temperature and humidity ranges:
Storage temperature: –20 to 75
°C, storage humidity: 10% to 90% (with no
icing or condensation)
• When using a thermocouple-input Temperature Sensor Unit, do not touch
the cold junction compensator. Doing so may result in incorrect tempera-
ture measurement.
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