Power Supply Wiring; Grounding - Mitsubishi FX3U-64CCL User Manual

FX -64CCL User's Manual
3U
5.1

Power supply wiring

5.1.1 Power supply wiring
FX /FX
3G 3U
main unit
Power-on/off timing
The 64CCL power supply should be turned ON simultaneously with or before the power supply of the PLC
main unit. Before turning the power OFF, ensure the safety of the system and then simultaneously turn the
main unit, 64CCL, and other extension equipment (the special extension equipment is included) OFF.
For details, refer to the respective PLC manual.
5.1.2

Grounding

Ground the cables as follows
• The grounding resistance should be 100 or less.
• Independent grounding should be established whenever possible.
Independent grounding should be performed for best results.
When independent grounding is not configured, perform "shared grounding" as shown in the following
figure.
For details, refer to the respective PLC manual.
• The grounding point should be close to the 64CCL, and all grounding wires should be as short as possible.
26
Stabilized
power supply
DC24V
24+ 24-
FX -64CCL
3U
Other
64CCL
equipment
Independent grounding
Best condition
Stabilized
power supply
DC24V
FX -CNV-IF
2NC
or
FX -1PS-5V
3UC
24+ 24-
FX
3UC
FX -64CCL
3U
main unit
Other
64CCL 64CCL
equipment
Shared grounding
Shared grounding
Good condition
5 Wiring, Start-up procedure
5.1 Power supply wiring
→ Refer to the FX
Hardware Edition
3G
→ Refer to the FX
Hardware Edition
3U
→ Refer to the FX
Hardware Edition
3UC
→ Refer to the FX
Hardware Edition
3G
→ Refer to the FX
Hardware Edition
3U
→ Refer to the FX
Hardware Edition
3UC
Other
equipment
Not allowed