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Mitsubishi FX3U-232-BD - 4.3.3 For FX2(FX) and FX2 C PLCs; 4.4 Grounding

Mitsubishi FX3U-232-BD
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C-28
FX Series PLC User's Manual - Data Communication Edition
Parallel Link
4 Wiring
4.4 Grounding
4.3.3 For FX2(FX) and FX2C PLCs
4.4 Grounding
Grounding should be performed as stated below.
The grounding resistance should be 100 or less.
Independent grounding should be performed for best results.
When independent grounding can not be performed, perform "shared grounding" as shown in the following
figure.
For details, refer to the Hardware Edition of each series.
The grounding wire size should be AWG 14 (2 mm
2
) or larger.
The grounding point should be close to the PLC, and all grounding wires should be as short as possible.
SA
SB
SG
*1
FX
2
-40AW FX
2
-40AW
SA
SB
SG
*1
FX
2
-40AP
T
R
FX
2
-40AP
R
T
*1
Connect the terminal to the terminal in each PLC (main unit).
SGSG
PLC
Other
equipment
PLC
Other
equipment
PLC
Other
equipment
Shared grounding
Good condition
Common grounding
Not allowed
Independent grounding
Best condition

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