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4.1.3 Grounding
Please follow the following for grounding treatment. If proper grounding treatment is adopted, misoperation
caused by interference can also be prevented.
When connecting the grounding cable, please pay attention to the following points:
Please use the grounding above Class D (grounding resistance below 100
Ω
).
One point must be grounded.
When the servo motor and the machine are insulated from each other, please directly ground the servo
motor.
Grounding of motor housing or motor
The switch interference current will flow out from the servo drive main loop through the floating capacitor of the
servo motor when the servo motor is mechanically grounded. Please be sure to connect the motor housing
terminal (FG) or ground terminal (FG) of the servo motor with the ground terminal of the servo drive in order to
prevent this phenomenon. In addition, the ground terminal” ” must be grounded.
When noise occurs in cables for input and output signals
Please connect the shielded wire of the cable for input and output signals to the connector housing before
grounding when interference occurs in the cable for input and output signals. The metal sleeve and the
grounding box are grounded at a single point when the main loop cable of the servo motor is sheathed with a
metal tube.