Mitsubishi Electric LCPU-U-HW Safety Manuallines page 6

[Design Precautions]
Precautions for using flexible high-speed I/O control
modules
● When changing setting data and operating status of the running module from
a personal computer, configure an interlock circuit external to the
programmable controller to ensure that the entire system operates safely.
In addition, before performing online operations for the running module from a
personal computer, determine corrective actions to be taken in case of a
communication failure due to poor contact of cables.
[Design Precautions]
● 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.
● 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.
● Time from when the CPU module is powered on or is reset to when it enters in
RUN status depends on the system configuration, parameter settings, and
program size. Design the program so that the entire system will always
operate safely, regardless of the time.
Precautions for using dual channel isolated high
resolution analog-digital converter modules
● Do not install the analog signal cable together with main circuit lines, power
cables, or load circuit lines of a device other than the programmable controller.
Install the analog output cable 150mm away from the above lines and cables.
Failure to do so may result in malfunction due to noise.
WARNING
CAUTION
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