Grounding - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -3A-ADP (2-channel Analog Input, 1-channel Analog Output)
3U
3.5

Grounding

Grounding should be performed as stated below.
• The grounding resistance should be 100 Ω or less.
• Independent grounding should be performed for best results.
When independent grounding is not performed, perform "shared grounding" as shown in the following
figure.
Other
PLC
equipment
Independent grounding
Best condition
• The grounding wire size should be AWG22 to 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.
PLC User's Manual - Analog Control Edition
→ For details, refer to the User's Manual - Hardware Edition of the each PLC Series.
Other
PLC
equipment
Shared grounding
Good condition
Other
PLC
equipment
Common grounding
Not allowed
2
).
3 Wiring
3.5 Grounding
A
B
C
D
E
F
G
H
I
J
H-17