User`s manual

3
[Design Precautions]
[Installation Precautions]
CAUTION
● Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Keep a distance of 100mm or more between them.
Failure to do so may result in malfunction due to noise.
● When using the module while values, such as buffer memory set values, are registered in the Flash
ROM, do not turn off the power supply for the module loading station nor reset the programmable
controller CPU.
If the power supply for the module loading station is turned off or the programmable controller CPU is
reset while any values are registered, the data contents in the Flash ROM become inconsistent and
as a result the values must be set again in the buffer memory, etc. and reregistered to the Flash ROM.
Also, this may cause failure and malfunction of the module.
CAUTION
● Use the programmable controller in an environment that meets the general specifications in the user's
manual for the CPU module used.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the
product.
● To mount the module, while pressing the module mounting lever located in the lower part of the
module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the
module until it snaps into place.
Incorrect interconnection may cause malfunction, failure, or drop of the module.
When using the programmable controller in an environment of frequent vibrations, fix the module with
a screw.
● Tighten the screws within the specified torque range.
Undertightening can cause drop of the screw, short circuit, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
● Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may result in damage to the product.
● Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.