Yaskawa Sigma II Series DC Power Input SGMAJ - Manual (Page 139)

6 Wiring
6.4.2 Wiring for Noise Control
6-20
3. Connect the noise filter ground wire directly to the ground plate.
Do not connect the noise filter ground wire to other ground wires.
4. When grounding a noise filter inside a unit:
If a noise filter is located inside a unit, connect the noise filter ground wire and the ground wires from other
devices inside the unit to the ground plate for the unit first, then ground these wires.
Shielded
ground wire
Thick and
short
Box Box
SERVOPACK
Incorrect Correct
Noise
filter Noise
filter
SERVOPACK SERVOPACK SERVOPACK
AC/DC
converter
Noise
filter
Unit
Ground
Box
SERVOPACK
SERVOPACK