Mitsubishi Electric MELSEC Q Series User Manual page 9

[Startup and Maintenance Precautions]
● When connecting a peripheral device to the CPU module or connecting a personal computer or the
like to the intelligent function module to exercise control (data change) on the running C Controller
module, configure up an interlock circuit in the user program to ensure that the whole system will
always operate safely. Also before exercising other control (program change, operating status
change (status control)) on the running C Controller module, read the manual carefully and fully
confirm safety. Especially for the above control on the remote C Controller module from an external
device, an immediate action may not be taken for C Controller module trouble due to a data
communication fault. In addition to configuring up the interlock circuit in the user program, corrective
and other actions to be taken as a system for the occurrence of a data communication fault should
be predetermined between the external device and CPU module.
● 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 25cm (9.85 inches) away in all directions from the C Controller module. 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. The system using a CPU
module ready for the online module change, and the MELSECNET/H remote I/O station are
exchangeable in the online state (while power is on). However, there are limited number of modules
that are exchangeable in the online state (while power is on) and a replacement procedures is
defined for each module. For details, refer to the QCPU User's Manual (Hardware Design,
Maintenance and Inspection) and the online module change section in the respective manual for
each online exchangeable module.
● After the first use of the product, the number of connections/disconnections is limited to 50 times (in
accordance with IEC 61131-2). Exceeding the limit may cause malfunction.
● After the first use of the SD memory card, the number of insertions/removals is limited to 500 times.
Exceeding the limit 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.
● Startup and maintenance inside the control panel must be performed by maintenance personnel fully
trained for electric shock protection. Further, take measures to prevent any person other than
maintenance personnel from operating the control panel, e.g. locking the control panel.
● 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.
● After first use of the product, do not install or remove the SD memory card more than 500 times.
Exceeding the limit of 500 times may cause malfunction.
CAUTION
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