Mitsubishi Electric NZ2GFSS2 32D S1 User Manual page 6

[Wiring Precautions]
WARNING
● Shut off the external power supply (IO power) used in the system in all phases before installation and
wiring. Failure to do so may result in electric shock or cause the module to fail or malfunction.
[Wiring Precautions]
CAUTION
● Individually ground the FG terminal of the programmable controller with a ground resistance of 100
ohms or less. Failure to do so may result in electric shock or malfunction.
● Check the rated voltage and terminal layout before wiring to the module, and connect the cables
correctly. Connecting a power supply with a different voltage rating or incorrect wiring may cause fire
or failure.
● Tighten the terminal block mounting screws within the specified torque range. Undertightening can
cause short circuit, fire, or malfunction. Overtightening can damage the screw and/or module,
resulting in drop, short circuit, or malfunction.
● Prevent foreign matter such as dust or wire chips from entering the module. 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 module during wiring. Do not remove the film during wiring. Remove it for heat
dissipation before system operation.
● 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.
● 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 block screw. Pulling the cable connected to the module may result in malfunction
or damage to the module or cable.
● Do not install the control lines or communication cables together with the main circuit lines or power
cables. Keep a distance of 100mm or more between them. Failure to do so may result in malfunction
due to noise.
● When an overcurrent caused by an error of an external device or a failure of the module flows for a
long time, it may cause smoke and fire. To prevent this, configure an external safety circuit, such as a
fuse.
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