Maintenance And Inspection - Mitsubishi Electric MELCEC Q Series User Manual

10. MAINTENANCE AND INSPECTION

10 MAINTENANCE AND INSPECTION
Do not touch any terminal during power distribution.
WARNING
Doing so may cause an electric shock.
Properly connect batteries.
Do not charge, disassemble, heat or throw them into the fire and do not make them
short-circuited and soldered. Incorrect battery handling may cause personal injuries
or a fire due to exothermic heat, burst and/or ignition.
Be sure to shut off all phases of the external power supply used by the system before
cleaning or retightening the terminal screws or module mounting screws.
Failure to do so may result in an electric shock.
If they are too loose, it may cause a short circuit or malfunctions.
If too tight, it may damage the screw and/or module, resulting in a drop of the module,
a short circuit or malfunctions.
When performing online operations (especially, program modification, forced output
CAUTION
or operating status change) by connecting a peripheral device to the running CPU
module, read the manual carefully and ensure the safety.
Incorrect operation will cause mechanical damage or accidents.
Do not disassemble or modify each of modules.
Doing so may cause failure, malfunctions, personal injuries and/or a fire.
When using a wireless communication device such as a mobile phone, keep a
distance of 25cm or more from the programmable controller in all directions.
Failure to do so may cause malfunctions.
After the first use of the product, do not perform each of the following operations more
than 50 times (IEC 61131-2/JIS B 3502 compliant).
Exceeding the limit may cause malfunction.
Be sure to shut off all phases of the external power supply used by the system before
mounting or removing the module.
Failure to do so may result in failure or malfunctions of the module.
Do not drop or apply any impact to the battery.
Doing so may damage the battery, resulting in electrolyte spillage inside the battery.
If any impact has been applied, discard the battery and never use it.
Before handling modules, touch a grounded metal object to discharge the static
electricity from the human body.
Failure to do so may cause failure or malfunctions of the module.
In order to use the programmable controller always in good condition, conducting daily
and periodical maintenance/inspection on the following items are strongly recommended.
• Mounting/removing the module to/from the base unit
• Mounting/removing the terminal block to/from the module
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