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[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.
● After the head module is powered on or is reset, the time taken to enter the
RUN status varies depending on the system configuration, and/or parameter
settings. Design circuits 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.
Precautions for using digital-analog converter modules
and analog input/output modules
● When the system is powered on, a surge voltage may occur or inrush current
may flow between output terminals. Start the control after analog outputs are
stabilized.
● Turn on or off the external power supply while the programmable controller is
on. Doing so with the programmable controller is off may cause incorrect
output or malfunction.
Precautions for using flexible high-speed I/O control
modules
● Do not install the control lines or communication cables together with the
main circuit lines or power cables. Keep a distance of 150mm or more
between them. Failure to do so may result in malfunction due to noise.
CAUTION
6
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