User`s manual

2
[Installation Precautions]
[Wiring Precautions]
CAUTION
● Use the programmable controller in an environment that meets the general specifications in the
user's manual for the CPU module used. Failure to do so may result in electric shock, fire,
malfunction, or damage to or deterioration of the product.
● To mount the module, while pressing the module mounting lever located in the lower part of the
module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the
module until it snaps into place. Incorrect interconnection may cause malfunction, failure, or 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. Undertightening can cause drop of the screw,
short circuit or malfunction. Overtightening can damage the screw and/or module, resulting in drop,
short circuit, or malfunction.
● Shut off the external power supply for the system in all phases before mounting/removing a module
or connecting/disconnecting a connector. Failure to do so may result in damage to the product.
● Do not directly touch any conductive parts and electronic components of the module and the
connectors. Doing so can cause malfunction or failure of the module.
CAUTION
● Connectors for external devices must be crimped with the tool specified by the manufacturer or must
be correctly soldered.
Incomplete connections may cause short circuit, fire, or malfunction.
● Ground the FG and LG terminals to the protective ground conductor dedicated to the programmable
controller. Failure to do so may result in electric shock 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. Pulling the cable connected to the module may
result in malfunction or damage to the module or cable.
● Ground the shield cable on the encoder side (relay box). Always ground the FG and LG terminals to
the protective ground conductor. Failure to do so may cause 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 a
fire or failure.