Mitsubishi Electric FX3U-CAN, Руководство пользователя

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4 Wiring
4.3 Grounding
32
FX
3U
-CAN User's Manual
4.2.3 Grounding of twisted pair cable
Strip a part of the coating of the shielded twisted pair cable as shown below, and ground at least 35 mm
(1.38") of the exposed shield section.
4.2.4 Termination
The CANopen
®
network requires terminating resistors for both network ends. When FX
3U
-CAN is the network
end, connect the included terminating resistor (120
Ω
1/2W) between pin number 2 (CAN_L) and 4 (CAN_H).
4.3 Grounding
Ground the cables as follows
• The grounding resistance should be 100
Ω
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 further information, refer to the respective PLC manual.
→ Refer to FX
3G
Hardware Edition
→ Refer to FX
3GC
Hardware Edition
→
Refer to FX
3U
Hardware Edition
→
Refer to FX
3UC
Hardware Edition
→ Refer to MELSEC iQ-F FX5U User's Manual (Hardware)
→
Refer to MELSEC iQ-F FX5UC User's Manual (Hardware)
• The grounding point should be close to the FX
3U
-CAN, and all grounding wires should be as short as
possible.
Shielded twisted pair cable
Shield
FX
3U
-
CAN
Other
equipment
Shared grounding
Good condition
Shared grounding
Not allowed
Independent grounding
Best condition
FX
3U
-
CAN
Other
equipment
FX
3U
-
CAN
Other
equipment