Mitsubishi FX3U-?*MR/ES User Manual page 4

2. INSTALLATION PRECAUTIONS
• Make sure to cut off all phases of the power supply externally before attempting installation or
wiring work.
Failure to do so may cause electric shock or damage to the product.
• Use the product within the generic environment specifications described in section 4.1 of this
manual.
Never use the product in areas with excessive dust, oily smoke, conductive dusts, corrosive gas
(salt air, Cl , H S, SO
2 2
temperature, condensation, or 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.
FX -10GM, FX -20GM, and terminal block
2N 2N
Main unit, FX Series I/O extension unit/block, FX
2N
Series special function block, and special adapter
• 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.
• Make sure to affix the expansion board with tapping screws.
Tightening torque should follow the specifications in the manual.
Loose connections may cause malfunctions.
• 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.
• Connect the extension cables, peripheral device cables, input/output cables and battery
connecting cable securely to their designated connectors.
Loose connections may cause malfunctions.
• Connect the display module, memory cassette, and expansion board securely to their designated
connectors.
Loose connections may cause malfunctions.
• Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause device failures or malfunctions.
- Peripheral devices, display modules, expansion boards and special adapters
- Extension units/blocks and FX Series terminal blocks
- Battery and memory cassette
• Connect the memory cassette securely to the appropriate connector.
Loose connections may cause malfunctions.
Installing the cassette in a raised or tilted posture can also cause malfunctions.
Cross-sectional drawing (memory cassette installation position)
Cross-section drawing (memory cassette installation condition)
Good
Bad
Bad
Safety Precautions
(Read these precautions before use.)
or NO ), flammable gas, vibration or impacts, or expose it to high
2 2
Press the 4 corners in approx.
0.4mm(0.02")
Memory
cassette
Memory
cassette
Memory
cassette
(2)
DIN rail only
/FX /FX
0N 2N 3U
DIN rail or direct mounting
PLC body
Raised cassette
posture
Tilted cassette posture
Reference
141
439
Reference
142
440
463