Mitsubishi Electric Q26UD(E)HCPU User Manual page 5

[Installation Precautions]
● Use the programmable controller in an environment that meets the general specifications in this
manual. Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of
the product.
● To mount the module, while pressing the module mounting lever 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 programmable controller in an environment of frequent vibrations, fix the module with a
screw. 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 extension cable connector
Check the connection for looseness. Poor contact may cause incorrect input or output.
● When using a memory card, fully insert it into the memory card slot. Check that it is inserted
completely. Poor contact may cause malfunction.
● When using an SD memory card, fully insert it into the SD memory card slot. Check that it is inserted
completely. Poor contact may cause malfunction.
● When using an extended SRAM cassette, fully insert it into the connector for cassette connection of
the CPU module. Close the cassette cover after inserting to avoid looseness of the extended SRAM
cassette. Poor contact may cause malfunction.
● Shut off the external power supply (all phases) used in the system before mounting or removing the
module. Failure to do so may result in damage to the product. A module can be replaced online (while
power is on) on any MELSECNET/H remote I/O station or in the system where a CPU module
supporting the online module change function is used. Note that there are restrictions on the modules
that can be replaced online, and each module has its predetermined replacement procedure. For
details, refer to this manual and in the manual for the corresponding module.
● Do not directly touch any conductive part of the module, the memory card, the SD memory card, or
the extended SRAM cassette. Doing so can cause malfunction or failure of the module.
● When using a Motion CPU module and modules designed for motion control, check that the
combinations of these modules are correct before applying power. The modules may be damaged if
the combination is incorrect. For details, refer to the user's manual for the Motion CPU module.
[Wiring Precautions]
● Shut off the external power supply (all phases) used in the system before wiring. Failure to do so may
result in electric shock or damage to the product.
● After installation and wiring, attach the included terminal cover to the module before turning it on for
operation. Failure to do so may result in electric shock.
CAUTION
WARNING
of the base unit securely.
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