14 Test Operation, Adjustment, Maintenance and Troubleshooting
164
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
14. Test Operation, Adjustment, Maintenance and
Troubleshooting
STARTUP AND MAINTENANCE
PRECAUTIONS
• Do not touch any terminal while the PLC’s power is on.
Doing so may cause electric shock or malfunctions.
• Before cleaning or retightening terminals, cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
• Make sure to connect the battery for memory backup correctly.
Do not charge, disassemble, heat, short-circuit, or expose the battery to fire.
Doing so may rupture or ignite it.
• Before modifying or disrupting the program in operation or running the PLC, carefully read through this manual and the associated
manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause accidents.
• Do not change the program in the PLC from two or more peripheral equipment devices at the same time. (i.e. from a programming tool
and a GOT)
Doing so may cause destruction or malfunction of the PLC program.
STARTUP AND MAINTENANCE
PRECAUTIONS
• Turn off the power to the PLC before attaching or detaching the memory cassette. If the memory cassette is attached or detached
while the PLC’s power is on, the data in the memory may be destroyed, or the memory cassette may be damaged.
• Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric distributor.
• Turn off the power to the PLC before connecting or disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
• Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause equipment failures or malfunctions.
- Peripheral devices, expansion boards, and special adapters
- Extension units/blocks and FX Series terminal blocks
- Battery and memory cassette
DISPOSAL PRECAUTIONS
• Please contact a certified electronic waste disposal company for the environmentally safe recycling and disposal of your device.
TRANSPORTATION PRECAUTIONS
• When transporting the FX3G Series PLC incorporating the optional battery, turn on the PLC before shipment, confirm that the battery
mode is set using a parameter and the ALM LED is OFF, and check the battery life.
If the PLC is transported with the ALM LED on or the battery exhausted, the battery-backed data may be unstable during
transportation.
• The PLC is a precision instrument. During transportation, avoid impacts larger than those specified in the general specifications
(Section 4.1). Failure to do so may cause failures in the PLC.
After transportation, verify the operations of the PLC.
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