Mitsubishi Electric Artisan MELSEC-Q Series Manual page 14

General-purpose programmable controllers, large/small
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Startup and Maintenance Precaution
● Do not touch any terminal while power is on.
Doing so will cause electric shock or malfunction.
● Correctly connect the battery connector. The battery must not be charged, disassembled, heated, thrown into
the fire, short-circuited, soldered, wetted with a liquid or exposed to strong shock.
Doing so will cause the battery to produce heat, explode, or ignite, resulting in injury and fire.
● Shut off the external power supply for the system in all phases before cleaning the module or retightening the
terminal screws or connector fixing screws.
Failure to do so may result in electric shock.
● Before performing online operations (especially, program modification, forced output, and operation status
change) for the running CPU module from the peripheral connected, read relevant manuals carefully and
ensure the safety.
Improper operation may damage machines or cause accidents.
● Do not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.
● Use any radio communication device such as a cellular phone or PHS (Personal Handy-phone System) more
than 25 cm away in all directions from the programmable controller.
Failure to do so may cause malfunction.
● Shut off the external power supply for the system in all phases before mounting or removing the module.
Failure to do so may cause the module to fail or malfunction.
● Tighten the screws on the terminal block and the connector mounting screws within the specified torque
range.
Undertightening the screws may cause fall of parts and wires, short circuit and malfunction.
Overtightening can damage the screws and/or module, thereby causing fall, short circuiting and malfunction.
● Connection/disconnection of the module (including the display module) and the terminal block after the first
use of the product shall be limited to 50 times. (Compliant with JIS B 3502)
Exceeding the limit of 50 times may cause malfunction.
● Connection/disconnection of the SD memory card after the first use of the product shall be limited to 500
times.
Exceeding the limit of 500 times may cause malfunction.
● Do not drop or apply shock to the battery to be installed in the module.
Doing so may damage the battery, causing the battery fluid to leak inside the battery.
If the battery is dropped or any shock is applied to it, dispose of it without using.
● Before handling the module, touch a grounded metal object to discharge the static electricity from the human
body.
Failure to do so may cause the module to fail or malfunction.
● Before staring the test run of the positioning function, set the speed limit parameter to a low value and make
preparations to promptly stop the system in case of a hazardous situation.
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WARNING
CAUTION
11

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