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[Installation Precautions]
[Wiring Precautions]
[Startup and Maintenance Precautions]
[Startup and Maintenance Precautions]
CAUTION
● Use the programmable controller in an environment that meets the general specifications in the Safety
Guidelines included with the MELSEC-L series CPU module.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the
product.
● To interconnect modules, engage the respective connectors and securely lock the module joint levers
until they click. Incorrect interconnection may cause malfunction, failure, or drop of the module.
● Shut off the external power supply (all phases) used in the system before mounting or removing a
module. Failure to do so may result in electric shock or cause the module to fail or malfunction.
● Do not directly touch any conductive parts and electronic components of the module. Doing so can
cause malfunction or failure of the module.
CAUTION
● 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.
● When disconnecting the communication and power cables from the module, do not pull the cables by
hand. 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.
● 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.
WARNING
● Shut off the external power supply (all phases) used in the system before cleaning the module. Failure
to do so may result in electric shock.
CAUTION
● Do not disassemble or modify the module. Doing so may cause failure, malfunction, injury, or a fire.
● Shut off the external power supply (all phases) used in the system before mounting or removing the
module. Failure to do so may cause the module to fail or malfunction.
● After the first use of the product (module and display unit), the number of connections/disconnections
is limited to 50 times (in accordance with IEC 61131-2). Exceeding the limit may cause malfunction.
● Before handling the module, touch a conducting object such as a grounded metal to discharge the
static electricity from the human body. Failure to do so may cause the module to fail or malfunction.
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