Mitsubishi Electric MELIPC MI5000 Series User Manual page 5

[Wiring Precautions]
WARNING
● Shut off the external power supply (all phases) used in the system before installation and wiring.
Failure to do so may result in electric shock or cause the module to fail or malfunction.
● After installation and wiring, close the terminal cover before turning it on for operation. Failure to do so
may result in electric shock.
[Wiring Precautions]
CAUTION
● Individually ground the FG and LG terminals of the product with a ground resistance of 100 ohms or
less. Failure to do so may result in electric shock or malfunction.
● Use applicable solderless terminals and tighten them within the specified torque range. If any spade
solderless terminal is used, it may be disconnected when the terminal screw comes loose, resulting in
failure.
● Check the rated voltage and signal layout before wiring to the power supply module, and connect the
cables correctly. Connecting a power supply with a different voltage rating or incorrect wiring may
cause fire or failure.
● Solderless terminals must be crimped with the tool specified by the manufacturer. Incomplete
crimping may cause short circuit, fire, or malfunction.
● Securely connect the connector of an external device to the product. Poor contact may cause
malfunction.
● Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 100 mm or more between them. Failure to do so may result in malfunction
due to noise.
● Place the cables in a duct or clamp them. (Cable ties made of nylon can be used as well.) If not,
dangling cable may swing or inadvertently be pulled, resulting in damage to the module or cables or
malfunction due to poor contact.
● Check the interface type and correctly connect the cable. Incorrect wiring (connecting the cable to an
incorrect interface) may cause failure of the module and external device.
● Tighten the terminal screws or connector screws within the specified torque range. Undertightening
can cause drop of the screw, short circuit, fire, or malfunction. Overtightening can damage the screw
and/or module, resulting in drop, short circuit, fire, or malfunction.
● Prevent foreign matter such as dust or wire chips from entering the product. Such foreign matter can
cause a fire, failure, or malfunction.
● A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the product during wiring. Do not remove the film during wiring. Remove it for heat
dissipation before system operation.
● When disconnecting the cable from the product, 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.
● The product must be installed in a control panel. Connect the main power supply to the power supply
module in the control panel through a relay terminal block. Wiring and replacement of a power supply
module must be performed by qualified maintenance personnel with knowledge of protection against
electric shock. For wiring methods, refer to the MELIPC MI5000 Series User's Manual (Startup).
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