Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 9

[Startup and Maintenance precautions]
Do not touch the terminals while power is on.
Doing so could result in electric shock.
Correctly connect the battery connector.
Also, do not charge, disassemble, heat, place in fire, short circuit, or solder the battery.
Mishandling of battery can cause overheating, cracks, or ignition which could result in injury and
fires.
Turn off all phases of the external supply power used in the system when cleaning the module or
retightening the terminal block mounting screws, terminal screws, or module fixing screws.
Not doing so could result in electric shock.
Tighten a terminal block mounting screw, terminal screw, and module fixing screw within the
specified torque range.
If the terminal block mounting screw or terminal screw is too loose, it may cause a short circuit, fire,
or malfunctions.
If too tight, it may damage the screw and/or the module, resulting in a drop of the screw or module, a
short circuit or malfunctions.
If the module fixing screw is too loose, it may cause a drop of the screw or module.
Overtightening the screw may cause a drop due to the damage of the screw or module.
[Startup and Maintenance precautions]
The online operations performed from a PC to a running safety programmable controller (Program
change when a safety CPU module is RUN, device test, and operating status change such as
RUN-STOP switching) have to be executed after the manual has been carefully read and the safety
has been ensured.
Following the operating procedure predetermined at designing, the operation has to be performed by
an instructed person.
When changing a program while a safety CPU module is RUN (Write during RUN), it may cause a
program breakdown in some operating conditions.
Fully understand the precautions described in the GX Developer's manual before use.
Do not disassemble or modify the modules.
Doing so could cause a failure, malfunctions, injury, or fire.
If the product is repaired or remodeled by other than the specified FA centers or us, the warranty is
not covered.
Use any radio communication device such as a cellular phone or a PHS phone more than 25cm
away in all directions of safety programmable controller.
Not doing so can cause malfunctions.
WARNING
CAUTION
A
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