Power Supply Wiring; Grounding - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
5.2

Power Supply Wiring

5.2.1 Power supply wiring
20SSC-H
24V DC
+
Class D grounding
Power-on timing
The 20SSC-H power supply should be turned ON simultaneously or before the PLC main unit. Before turning
the power OFF, ensure the safety of the system and then simultaneously turn the main unit, 20SSC-H, and
other extension equipment (the special extension equipment is included) OFF.
For details, refer to the following respective PLC manual.
5.2.2

Grounding

Ground the cables as follows
• The grounding resistance should be 100Ω 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 following respective PLC manual.
• The grounding wire size should be AWG22-20 (0.3 to 0.5 mm
• The grounding point should be close to the PLC, and all grounding wires should be as short as possible.
Other
PLC PLC
equipmemt
Independent grounding Shared grounding
Good condition
Best condition
→ Refer to the FX
→ Refer to the FX
→ Refer to the FX
→ Refer to the FX
Other
Other
PLC
equipmemt equipmemt
Shared grounding
Not allowed
2
).
5 Wiring
5.2 Power Supply Wiring
Hardware Edition
3U
Hardware Edition
3UC
Hardware Edition
3U
Hardware Edition
3UC
31
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