Mitsubishi QD75M1, User Manual

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MELSEC-Q
4 INSTALLATION, WIRING AND MAINTENANCE OF THE PRODUCT
[2] Precautions for installation
!
DANGER
Always turn all phases of the power supply OFF externally before cleaning or tightening the
screws.
Failure to turn all phases OFF could lead to electric shocks.
!
CAUTION
Never disassemble or modify the module.
Failure to observe this could lead to trouble, malfunctioning, injuries or fires.
Always turn all phases of the power supply OFF externally before installing or removing the
module.
Failure to turn all phases OFF could lead to module trouble or malfunctioning.
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.
Hold down the module mounting lever at the bottom of the module and securely insert the
module fixing projection into the fixing holes of the base module. Improper mounting of the
module may lead to malfunctioning, faults, or dropping.
When using the module in the environment subject to much vibration, secure 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 .