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10 MOUNTING AND INSTALLATION
MELSEC-ST
10 MOUNTING AND INSTALLATION
10.1 Handling Precautions
This section explains the precautions for handling the modules (head module, slice
modules, base modules, etc.) of the MELSEC-ST system.
DANGER
•
Do not touch the terminals or connector while the power is on.
This may cause electric shock or malfunction.
CAUTION
•
Make sure not to let foreign matters such as sawdust or wiring debris inside the
module.
This may cause fire, failure or malfunction.
•
Do not disassemble or modify the module.
This may cause failure, malfunction, injury or fire.
•
Do not directly touch the module's conductive parts.
This may cause malfunction or failure in the module.
•
As the module case is made of resin, be careful not to drop it or expose it to strong
impact. This may damage the module.
•
Tighten the terminal screws within the specified torque.
Loose tightening may cause fire or malfunction.
Overtightening may damage the screws, resulting in short circuit or malfunction.
•
When disposing of this product, treat it as industrial waste.
•
Use the module in an environment specifined in the general specifications of this
manual.
Failure to do so may cause electric shock, fire, malfunction, product deterioration or
damage.
•
Mount the module to a DIN rail securely.
Failure to do so may cause a fall, short circuit or malfunction of the module.
•
After mounting the head module and base module to the DIN rail, sandwich the
head module and the rightmost base module using end brackets to securely fix
them. Failure to do so may cause connection parts between modules may loosen
due to vibration or other reason.
•
Make sure to attach the rightmost part of the base module in order that terminals at
the side of the base module will not be exposed. Failure to do so may cause
electric shock, short circuit or malfunction.
•
Make sure to shut off all phases of the external power supply for the whole system
before mounting or removing the module. Failure to do so may cause the module
fail or malfunction.
(1) Do not drop the module or give it a strong impact.
(2) Tighten the terminal block screws of the base module within the following ranges.
Screw location
Tightening torque range
Base module terminal block screw
0.27 to 0.80 N·m
End bracket screw
0.50 to 0.60 N·m
10
Summary of Contents for MELESEC-ST
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