Mitsubishi Electric Melsec Q Series User Manual page 5

[Design Precautions]
 Do not bundle the control wires and the communication cables with the main circuit and the
power wires, and do not install them close to each other. They should be installed at least 100
mm (3.94 in.) away from each other. Failure to do so may generate noise that may cause
malfunctions.
 When changing the operating status of the programmable controller CPU (such as remote
RUN/STOP) from the external device, select "Always wait for OPEN (Communication possible
at STOP time)" for the "Initial timing" setting in the network parameter. The communication line
will be closed when "Do not wait for OPEN (Communications impossible at STOP time)" is
selected and the remote STOP is executed from the external device. Consequently, the
programmable controller CPU cannot reopen the communication line, and the external device
cannot execute the remote RUN.
[Installation Precautions]
 Use the programmable controller in an environment that meets the general specifications in the
user's manual for the CPU module used. Using the programmable controller in any other
operating environments may cause electric shocks, fires or malfunctions, or may damage or
degrade the module.
 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 mounting 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.
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CAUTION
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WARNING
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