Maintenance And Inspection - Mitsubishi MELSEC-F User Manual

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION

4.8 Maintenance and Inspection

4.8.1 Maintenance and inspection
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CAUTION
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This section explains the maintenance and inspection as well as the installing and
uninstalling of the Ethernet module.
The Ethernet module does not need to be inspected for anything particular other than
checking whether or not the connections of cables and the terminal screws are loose.
Maintain and inspect the system according to the same inspection items as described
in the user's manual for the PLC in order to use it in optimal operating conditions.
• Do not touch the terminals and connectors while the power is on.
Doing so may cause in electric shocks and malfunctions.
• Make sure to turn off all phases of the external power supply before cleaning or re-
tightening the screws. Failure to do so may cause damages or malfunctions of the
module.
If the screws are loose, it may cause the module to short-circuit, malfunction or fall
off.
Tightening the screws excessively may damage the screws and/or the module and
cause the module to short circuit, malfunction or fall off.
• Be careful not to let any foreign matter such as wire chips get inside the module.
They may cause fire, as well as breakdowns and malfunctions of the module.
• Never disassemble or modify the module.
This may cause breakdowns, malfunctions, injuries or fire.
MELSEC-F
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