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[DESIGN PRECAUTIONS]
!
CAUTION
Do not bunch the control wires or communication cables with the main circuit or power wires, or
install them close to each other. They should be installed 100 mm (3.94 inch) or more from
each other. Not doing so could result in noise that would cause erroneous operation.
When controlling items like lamp load, heater or solenoid valve using an output module, large
current (approximately ten times greater than that present in normal circumstances) may flow
when the output is turned OFF to ON.
Take measures such as replacing the module with one having sufficient rated current.
[INSTALLATION PRECAUTIONS]
!
CAUTION
Use the PLC in an environment that meets the general specifications contained in this manual.
Using this PLC in an environment outside the range of the general specifications could result in
electric shock, fire, erroneous operation, and damage to or deterioration of the product.
Hold down the module loading lever at the module bottom, and securely insert the module
fixing latch into the fixing hole in the base unit.
Incorrect loading of the module can cause a malfunction, failure or drop.
When using the PLC in the environment of much vibration, tighten the module with a screw.
Tighten the screw in the specified torque range. Undertightening can cause a drop, short circuit
or malfunction. Overtightening can cause a drop, short circuit or malfunction due to damage to
the screw or module.
When installing extension cables, be sure that the connectors of base unit are installed
correctly. After installation, check them for looseness. Poor connections could cause an input or
output failure.
Correctly connect the memory cassette installation connector to the memory cassette. After
installation, be sure that the connection is not loose. A poor connection could cause an
operation failure.
Completely turn off the external power supply before loading or unloading the module. Not
doing so could result in electric shock or damage to the product.
Do not directly touch the module's conductive parts or electronic components. Touching the
conductive parts could cause an operation failure or give damage to the module.
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