Grounding Both Ends Of The Shielded Cable - Mitsubishi Electric MELSERVO EMC Installation Manuallines

Grounding both ends of the shielded cable

The following figure shows only the wiring of the servo motor power cable. Wire the shielded wire of the encoder cable in the
same way as the power cable.
• Example of wiring when both ends of the shielded cable are grounded
Cabinet
Grounding with the P or U clip
10 cm or less
To servo
amplifier
Shield cable
When a shielded wire is used
• Radiated emissions when both ends of the shielded cable are grounded
The following figure is an example of a measurement result, and does not guarantee the measurement result.
LIMIT: IEC/EN 61800-3 (10 m)
[dBuV/m]
100
90
80
70
60
50
40
30
20
10
0
30 50
As close as
possible Connector
Servo motor
70 100
6.1 Reason for grounding the shield on both the cabinet side and servo motor chassis side
: Ver. (QP)
: Hor. (QP)
HORIZONTAL/VERTICAL
200
Frequency
6 EMC COUNTERMEASURES AND EFFECTS
6
300
29