Mitsubishi Electric Melsec Q Series User Manual page 3

[Design Precautions]

Do not write data into "System Area" in the buffer memory of the intelligent function module.
Also, do not output (turn ON) the "use prohibited" signal in the output signal sent from the
sequencer CPU to the intelligent function module.
Doing so may cause a malfunction to the sequencer system.

Do not install the input signal wire together with the main circuit lines or power cables. Keep a
distance of 300 mm or more between them. (Except for the terminal input part) Failure to do so
may result in malfunction due to noise.
[Installation Precautions]

Any person who is involved in the installation and the wiring of this Sequencer should be fully
competent to do the work.

Use the programmable controller in an environment that meets the general specifications in the
User's manual of the CPU module used.
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 a malfunction, failure or a fall of the module.
When using the Sequencer in an environment of frequent vibrations, fix the module with a screw.

Tighten the screws within the specified torque range.
Fixing-Module screw (arranged by user): M3 x 12 mm
Tightening torque of the fixing-module screws
When the screw tightening is loose, it causes a fall, short-circuit, and a malfunction.
Over-tightening can damage the screws and the module, and it may cause a fall, short-circuit, or a
malfunction.

Shut off the external power supply for the system in all phases before mounting or removing the
module. Failure to do so may result in damage to the product.

Do not touch directly any conductive parts and electronic parts of the module.
Doing so can cause a malfunction or failure of the module.
[Wiring Precautions]

For installation and wiring works, make sure that the power source is shut off for all outside
phases. If all phases are not turned off, it may cause an electric shock or product damages.
Danger
Caution
Caution
0.36 N•m to 0.48 N•m
Danger
A - 2