Mitsubishi Electric MELSEC Q Series User Manual page 6

[Installation Precautions]
● Use the C Controller module in an environment that meets the general specifications in this manual.
Failure to do so may result in an electric shock, fire, malfunction, or damage to or deterioration of the
product.
● To mount the module, while pressing the module mounting lever located in the lower part of the
module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the
module until it snaps into place.Incorrect mounting may cause malfunction, failure or drop of the
module.When using the module in an environment of frequent vibrations, fix the module with a
screw.
For any module with module fitting(s), place each module on the base unit first and then fix it with the
module fitting(s).
● Tighten the screw within the specified torque range. Undertightening can cause drop of the screw,
short circuit or malfunction. Overtightening can damage the screw and/or module, resulting in drop,
short circuit, or malfunction.
● When using an extension cable, connect it to the connector of the base unit or module securely.
Check the connection for looseness. Poor contact may cause incorrect input or output.
● When using a SD memory card, fully insert it into the slot. Check that it is inserted completely. Poor
contact may cause malfunction.
● When using a CompactFlash card, fully insert it into the CompactFlash card slot. Check that it is
inserted completely. Poor contact 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 result in damage to the product. 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.
● Do not directly touch any conductive part of the module. Doing so can cause malfunction or failure of
the module.
● When using the Motion CPU module and the Motion module, be sure to check if the module
combination is correct before powering up. Use of improper combination may result in damage to the
product. For details, refer to the User's Manual for the module used.
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CAUTION