Mitsubishi FX3U User Manual page 4

2. INSTALLATION PRECAUTIONS
• Make sure to cut off all phases of the power supply externally before attempting installation work.
Failure to do so may cause electric shock or damage to the product.
• Use the product within the generic environment specifications described in PLC main unit manual (Hardware
Edition). Never use the product in areas with excessive dust, oily smoke, conductive dusts, corrosive gas (salt air,
Cl , H S, SO , or NO ), flammable gas, vibration or impacts, or expose it to high temperature, condensation, or
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rain and wind. If the product is used in such conditions, electric shock, fire, malfunctions, deterioration or damage
may occur.
• Do not touch the conductive parts of the product directly.
Doing so may cause device failures or malfunctions.
• Install the product securely using a DIN rail or mounting screws.
• Install the product on a flat surface.
If the mounting surface is rough, undue force will be applied to the PC board, thereby causing nonconformities.
• When drilling screw holes or wiring, make sure that cutting and wiring debris do not enter the ventilation slits.
Failure to do so may cause fire, equipment failures or malfunctions.
• Be sure to remove the dust proof sheet from the PLC's ventilation port when installation work is completed.
Failure to do so may cause fire, equipment failures or malfunctions.
• Make sure to attach the top cover, offered as an accessory, before turning on the power or initiating operation after
installation or wiring work.
Failure to do so may cause electric shock.
• Connect extension cables securely to their designated connectors.
Loose connections may cause malfunctions.
Safety Precautions
(Read these precautions before use.)
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Reference
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Reference
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