Mitsubishi Electric Melsec iQ-R60AD16-G, Руководство пользователя

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[Design Precautions]
[Design Precautions]
WARNING
● If a communication cable is disconnected, the network may be unstable, resulting in a communication
failure of multiple stations. Configure an interlock circuit in the program to ensure that the entire
system will always operate safely even if communications fail. Failure to do so may result in an
accident due to an incorrect output or malfunction.
● To maintain the safety of the programmable controller system against unauthorized access from
external devices via the network, take appropriate measures. To maintain the safety against
unauthorized access via the Internet, take measures such as installing a firewall.
[Precautions for using the channel isolated analog-digital converter modules in SIL2 mode]
● When the R60AD8-G detects a fault in the external power supply or programmable controller, a digital
operation value becomes an OFF value (equivalent to 0V/0mA) in all channels. Configure an external
circuit to ensure that the power source of a hazard is shut off when a digital operation value of the
R60AD8-G is an OFF value (equivalent to 0V/0mA). Failure to do so may result in an accident.
● When a communication failure occurs in CC-Link IE Field Network, a digital operation value of the
R60AD8-G becomes an OFF value (equivalent to 0V/0mA). Check the communication status
information and configure an interlock circuit in the program to ensure that the entire system will
operate safely. Failure to do so may result in an accident due to an incorrect output or malfunction.
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.
●
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 reset the CPU module while the settings are being
written. Doing so will make the data in the flash ROM undefined. The values need to be set in the
buffer memory and written to the flash ROM again. Doing so also may cause malfunction or failure of
the module.
●
When changing the operating status of the CPU module from external devices (such as the remote
RUN/STOP functions), select "Do Not OPEN in Program" for "Open Method Setting" in the module
parameters. If "OPEN in Program" is selected, an execution of the remote STOP function causes the
communication line to close. Consequently, the CPU module cannot reopen the line, and external
devices cannot execute the remote RUN function.