Installation And Wiring Precautions - Mitsubishi Electric MELSEC iQ-R Series User Manual

Section 1 SAFETY PRECAUTIONS
1.3

Installation and Wiring Precautions

Make sure to use the module by following cautions of this section. Improper use may impair protection provided
by this module.
● Shut off the external power supply for the module in all phases before installing or wiring. Failure to do
so may cause an electric shock or a damage of the module.
● Shut off the power supply for the module in all phases before installing or wiring. Failure to do so may
cause an electric shock or a damage, a fire on the module.
＜Precautions for Electric work＞
● Any person who is involved in the installation and the wiring of this Programmable Controller should be
fully competent to do the work.
● Use the programmable controller in an environment that meets the general specifications in the
"MELSEC iQ-R Module Configuration Manual". Failure to do so may result in electric shock, fire,
malfunction, or damage to or deterioration of the product.
● After mounting the module, ensure that the module fixing hook is securely applied on the base unit and
the module is surely mounted. Incorrect mounting may cause malfunctions, a failure or a drop of the
module. When using the Programmable Controller in an environment of frequent vibrations, fix the
module with a screw.
● Tighten the screw within the specified torque range. Loose tightening can cause drop of the screw, short
circuit or malfunction. Over tightening can damage the screw and/or module, resulting in drop, short
circuit, or malfunction.
● Do not directly touch any conductive part of the module. Doing so can cause malfunctions or a failure of
the module.
● Take care not entering any foreign objects such as strips and wire pieces into the module. It may cause
a fire, a failure or a malfunction.
● In order to prevent the module from incoming foreign objects such as wire pieces during wiring work, a
foreign-object preventive label is placed on the module. While a wiring work is performed, keep the label
on the module. Before operating the system, peel off the label for heat release. If the foreign-object
preventive label is not peeled off and the system is in use, residual heat inside the module may reduce
the product life.
● After inserting the electric wire or a bar terminal, make sure that no missing insertion is existing. Missing
insertion may cause a malfunction, a fire, or an electric shock on the device.
● Ensure the wiring to the module properly after checking the rated voltage and current of the product and
the terminal pin assignment. If the input voltage exceeds the rated voltage or the wiring is improper, it
may cause a fire or a breakage.
● The wires to be connected to the module shall be placed in a duct or fixed together by clamping. If the
electric wires are not placed in the duct or clamped together, loosen wires or their movement or careless
stretch may cause a breakage of the module or wire or a malfunction due to poor contact of electric wires.
● For protection against noise, transmission lines and input lines shall not be placed close to or bound
together with the power lines and high voltage lines. Keep distance as below between them. (Except for
the terminal block.)
Condition
High-voltage line 600V or less
Other high-voltage line
Danger
Caution
Distance
300mm or more
600mm or more
8
RE81WH