Caution Regarding Wiring - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -4AD-PNK-ADP (4-channel Resistance Thermometer Data Input)
3U
3.6

Caution Regarding Wiring

• It is not possible to connect different types of resistance thermometer to 4 channels of PNK-ADP. Be sure
to use the same type of resistance thermometer for all the channels.
3.7 Grounding
Grounding should be performed as stated below.
• The grounding resistance should be 100Ω 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.
→ For details, refer to the User's Manual - Hardware Edition of the PLC Series.
Other
PLC PLC
equipment
Shared grounding Common grounding
Good condition
Other
equipment
Not allowed
2
).
3 Wiring
3.6 Caution Regarding Wiring
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