Mitsubishi Electric Q64RD, User Manual

Page: 69 / 184

4 - 1 4 - 1
MELSEC-Q
4 SETUP AND PROCEDURES BEFORE OPERATION
4 SETUP AND PROCEDURES BEFORE OPERATION
4.1 Handling Precautions
(1) Do not drop the module or subject it to heavy impact.
(2) Do not remove the PCB of the module from its case. Doing so may cause the
module to fail.
(3) Be careful not to let foreign particles such as swarf or wire chips enter the module.
They may cause a fire, mechanical failure or malfunction.
(4) The top surface of the module is covered with a protective film to prevent foreign
objects such as wire burrs from entering the module during wiring. Do not remove
this film until the wiring is complete. Before operating the system, be sure to
remove the film to provide adequate ventilation.
(5) Tighten the screws such as module fixing screws within the following ranges.
Loose screws may cause short circuits, failures, or malfunctions.
Screw location Tightening torque range
Module fixing screw (M3 screw)
1
0.36 to 0.48 N.m
Terminal block screw (M3 screw) 0.42 to 0.58 N.m
Terminal block mounting screw (M3.5 screw) 0.66 to 0.89 N.m
1 The module can be easily fixed onto the base unit using the hook at the top of the
module.
However, it is recommended to secure the module with the module fixing screw if the
module is subject to significant vibration.
(6) 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.
4