Yaskawa Σ-V Series AC Servo Drives Rotational Motor Analog Voltage Reference - Manual (Page 65)

3 Wiring and Connection
3.6.2 Precautions on Connecting Noise Filter
3-30
Connect the noise filter ground wire directly to the ground plate.
Do not connect the noise filter ground wire to other ground wires.
If a noise filter is located inside a control panel, first connect the noise filter ground wire and the
ground wires from other devices inside the control panel to the ground plate for the control panel,
then ground the plates.
Shielded
ground wire
Noise
Filter Noise
Filter
SERVOPACK SERVOPACK SERVOPACK SERVOPACK
Ground plate Ground plate
Incorrect Correct
AC/DC
converter
Noise
Filter
Control Panel
Ground
SERVOPACK
Ground plate
SERVOPACK