Wiring, Start-Up Procedure - Mitsubishi FX3U-64CCL User Manual

FX -64CCL User's Manual
3U
5.

Wiring, Start-up procedure

DESIGN PRECAUTIONS
• Observe the following items. Failure to do so may cause incorrect data-writing through noise to the PLC and result in PLC failure,
machine damage or other accident.
1) Do not bundle the control line together with or lay it close to the main circuit or power line. As a guideline, lay the control line at
least 100mm (3.94") or more away from the main circuit or power line.
Noise may cause malfunctions.
2) Ground the shield wire or shield of a shielded cable. Do not use common grounding with heavy electrical systems (refer to
Subsection 5.1.2).
• Do not apply excessive pressure to the power supply terminal block or CC-Link connection terminal block.
Excessive pressure may cause damage or error.
WIRING 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.
WIRING PRECAUTIONS
• Connect the DC power supply wiring to the dedicated terminals described in this manual.
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn out.
• Perform class D grounding (grounding resistance: 100
possible.
Do not use common grounding with heavy electrical systems (refer to Subsection 5.1.2).
• 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.
• 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.
• For the CC-Link system, use CC-Link dedicated cables.
The performance of the CC-Link system cannot be guaranteed with any cable other than CC-Link dedicated cables.
For the maximum total extension length and the cable length between stations, observe the specification described in the CC-Link
master module manual.
With wiring outside the specification range, normal data transfer cannot be guaranteed.
• Do not bundle the CC-Link exclusive cable together with or lay it close to the main circuit, high-voltage line, or load line. As a
guideline, lay the control line at least 100mm (3.94") or more away from the main circuit, high-voltage line, or load line.
Otherwise, noise disturbance and/or surge induction are likely to take place.
• Make sure to fix communication cables and power cables connected to the module by placing them in the duct or clamping them.
Cables not placed in duct or not clamped may hang or shift, allowing them to be accidentally pulled, which may result in malfunction or
damage to the module and the cables.
• When disconnecting a communication/power cable connected to the module, do not hold the cable area.
For a cable connected to a terminal block, loosen screws of the terminal block, then disconnect the cable.
If a cable is pulled while it is connected to a module, the module may malfunction or the module and the cable may be damaged.
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.
24
or less) to the grounding terminal on the 64CCL with a wire as thick as
5 Wiring, Start-up procedure