Mitsubishi Electric QD75MH1, User Manual

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MELSEC-Q
4 INSTALLATION, WIRING AND MAINTENANCE OF THE PRODUCT
[3] Precautions for installation
!
DANGER
Completely turn off the externally supplied power used in the system before clearing or
tightening the screws.
Not doing so may cause electric shocks.
!
CAUTION
Never disassemble or modify the module.
Failure to observe this could lead to trouble, malfunctioning, injuries or fires.
Completely turn off the externally supplied power used in the system before installing or
removing the module.
Not doing so may cause an operation failure or damage to the module.
Use the PLC within the general specifications environment given in CPU module User's
manual.
Using the PLC outside the general specification range environment could lead to electric
shocks, fires, malfunctioning, product damage or deterioration.
Don't directly touch the conductive area or electronic components of the module.
Failure to observe this could lead to trouble or malfunctioning.
While pressing the installation lever located at the bottom of module, insert the module fixing
tab into the fixing hole in the base unit until it stops. Then, securely mount the module with the
fixing hole as a supporting point.
Incorrect loading of the module can cause a malfunction, failure or drop.
When using the module in the environment of much vibration, tighten the module with a screw.
Tighten the screw within the range of the specified tightening torque.
Insufficient tightening may lead to dropping, short-circuit, or malfunctioning.
Excessive tightening may damage the screw or module, leading to dropping, short-circuit, or
malfunctioning
.