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[Installation Precautions]
[Wiring Precautions]
CAUTION
● Use the programmable controller in an environment that meets the general specifications in the
QCPU User's Manual (Hardware Design, Maintenance and Inspection). 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 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 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 of the base unit securely.
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.
● Securely insert an extended SRAM cassette into the cassette connector of a CPU module. After
insertion, close the cassette cover to prevent the cassette from coming off. 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 the relevant sections in the QCPU User's Manual (Hardware Design, Maintenance
and Inspection) and in the manual for the corresponding module.
● Do not directly touch any conductive parts and electronic components of the module, memory card,
SD memory card, or 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.
WARNING
● 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.