Mitsubishi MELSEC-A Series User Manual page 3

[INSTALLATION PRECAUTIONS]
Do not directly touch the printed circuit board, the conducting parts and electronic
parts of the module.
It may cause damage or erroneous operation.
Before handling the module, touch a grounded metal object to discharge the static
electricity from the human body. Failure to do so may cause malfunction or failure
of the module.
Completely turn off the externally supplied power used in the system before
mounting or removing the module.
Not doing so could result in damage to the product.
[WIRING PRECAUTIONS]
Before wiring, be sure to shut off all phases of the external power supply used by the
system.
Failure to do so may cause electric shocks or damage the product.
Be sure there are no foreign substances such as sawdust or wiring debris inside the
module. Such debris could cause fires, damage, or erroneous operation.
Make sure to place the communication and power cables into a duct or fasten them
using a clamp.
Cables not placed in the duct or not clamped may hang or shift, allowing them to be
accidentally pulled, which may cause a module malfunction and cable damage.
When removing the communication cable or power cables from the module, do not
pull the cable. When removing the cable with a connector, hold the connector on the
side that is connected to the module.
When removing the cable connected to the terminal block, first loosen the screws
on the terminal block.
Pulling the cable that is still connected to the module may cause malfunction or
damage to the module or cable.
CAUTION
DANGER
CAUTION