Mitsubishi Electric MELSEC iQ-R Series Migration Manual page 6

[Design Precautions]
●
Do not install the control lines or communication cables together with the main circuit lines or
power cables. Keep a distance of 100 mm or more between them. Failure to do so may result in
malfunction due to noise.
●
During control of an inductive load such as a lamp, heater, or solenoid valve, a large current
(approximately ten times greater than normal) may flow when the output is turned from off to on.
Therefore, use a module that has a sufficient current rating.
●
After the CPU module is powered on or is reset, the time taken to enter the RUN status varies
depending on the system configuration, parameter settings, and/or program size. Design
circuits so that the entire system will always operate safely, regardless of the time.
●
Do not power off the programmable controller or do not reset the CPU module during the setting
registration. Doing so will make the data in the flash ROM undefined. The data need to be set in
the buffer memory and to be written to the flash ROM again. Doing so may cause malfunction or
failure of the module.
●
When changing the operating status of the CPU module from external devices (such as remote
RUN/STOP), select "Do Not Open by Program" for "Opening Method" in the module
parameters. If "Open by Program" is selected, an execution of remote STOP causes the
communication line to close. Consequently, the CPU module cannot reopen the communication
line, and external devices cannot execute the remote RUN.
WARNING
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