Mitsubishi Electric Melsec Q Series User Manual page 6

[Wiring Precautions]
Be sure there are no foreign substances such as sawdust or wiring debris inside the module.
Such debris could cause fires, damage, or erroneous operation.
A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring.
Do not peel this label during wiring.
Before starting system operation, be sure to peel this label because of heat dissipation.
[Start-up and Maintenance Precautions]
Do not touch any terminal during power distribution.
Doing so may cause malfunctions.
Always switch OFF the external supply power used by the system in all phases before cleaning or
retightening terminal screws.
Failure to do so may cause a failure or malfunctions of the module.
Loose screws may cause a drop of the module, short-circuit, or malfunctions.
Tightening screws excessively may damage the screws and/or the module, resulting in a drop of the
module, short-circuit, or malfunctions.
Do not disassemble or transform the module.
Doing so may cause a failure, malfunctions, personal injuries, and/or a fire.
Always shut OFF the external supply power used by the system in all phases before mounting or
removing a module.
Failure to do so may cause a failure or malfunctions of the module.
Do not install/remove the module to/from the base unit more than 50 times after the first use of the
product. (IEC 61131-2 compliant)
Failure to do so may cause malfunction.
Do not drop or apply any impact to the battery.
Doing so may damage the battery, resulting in a battery fluid leakage inside the battery.
If any impact has been applied, discard the battery and never use it.
Before handling a module, touch a grounded metal object to discharge the static electricity from the
human body.
Failure to do so may cause a failure or malfunctions of the module.
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CAUTION
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CAUTION