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Troubleshooting - Mitsubishi Electric MELSEC-F Series User Manual

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FX
-1PG User's Manual
3U

11. Troubleshooting

When a fault occurs, check the power supply voltage, the PLC main unit and the FX
screws, and examine the connectors for a defective contact.
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.
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.
STARTUP AND MAINTENANCE
PRECAUTIONS
Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric representative.
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, display modules, expansion boards and special adapters
-
I/O extension units/blocks, FX Series terminal block and the special function units/blocks
-
Battery and memory cassette
118
11 Troubleshooting
-1PG for loose terminal
3U

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