Mitsubishi Electric QJ71E71-100 User Manual page 5

[Installation Precautions]
● Use the programmable controller in an environment that meets the general specifications in the user's
manual for the CPU module used. Using the programmable controller in any other operating
environments may cause electric shocks, fires or malfunctions, or may damage or degrade the
module.
● While pressing the installation lever located at the bottom of module, insert the module fixing tab into
the fixing hole in the base unit until it stops. Then, securely mount the module with the fixing hole as a
supporting point. If the module is not installed properly, it may cause the module to malfunction, fail or
fall off. Secure the module with screws especially when it is used in an environment where constant
vibrations may occur.
● Be sure to tighten the screws using the specified torque. If the screws loose, it may cause the module
to short-circuit, malfunction or fall off. If the screws are tightened excessively, it may damage the
screws and cause the module to short-circuit, malfunction or fall off.
● Shut off the external power supply (all phases) used in the system before mounting or removing the
module. Failure to do so may cause product damage.
● Do not directly touch any conductive part or electronic component of the module. This may cause the
module to malfunction or fail.
[Wiring Instructions]
● Connectors for external devices and coaxial cables must be crimped or pressed with the tool specified
by the manufacturer, or must be correctly soldered. Incomplete connections may cause short circuit,
fire, or malfunction.
● Shut off the external power supply (all phases) used in the system before connecting the AUI cable.
● Securely connect the connector to the module. Poor contact may cause malfunction.
● Place the cables in a duct or clamp them. If not, dangling cable may swing or inadvertently be pulled,
resulting in damage to the module or cables or malfunction due to poor contact.
● Tighten the terminal screws using the specified torque. If the terminal screws are loose, it may cause
the module to short-circuit, malfunction or fall off. If the terminal screws are tightened excessively, it
may damage the screws and cause the module to short-circuit, malfunction or fall off.
● When disconnecting the cable from the module, do not pull the cable by the cable part. For the cable
with connector, hold the connector part of the cable. For the cable connected to the terminal block,
loosen the terminal screw. Pulling the cable connected to the module may result in malfunction or
damage to the module or cable.
● Be careful not to let any foreign matter such as wire chips get inside the module. They may cause fire,
as well as breakdowns and malfunctions of the module.
● A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring. A protective film is attached to the top of the module to
prevent foreign matter, such as wire chips, from entering the module during wiring. Remove it for heat
dissipation before system operation.
CAUTION
CAUTION
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