Mitsubishi Electric Q170MSCPU User Manual page 115

3 DESIGN
(2) Grounding
The Motion controller may malfunction as it is affected by various noises such as
electric path noises from the power supply lines, radiated and induced noises
from other equipment, servo amplifiers and their cables, and electromagnetic
noises from contactors. To avoid such troubles, connect the earthing ground of
each equipment and the shield grounds of the shielded cables to the earth.
For grounding, use the exclusive ground terminal wire of each equipment or a
single-point earth method to avoid grounding by common wiring, where possible,
since noises may sneak from other equipment due to common impedances.
Line noise
100/200VAC
filter
(Note): Be sure to ground the line noise filter, Motion controller, servo amplifier and
servomotor. (Ground resistance : 100
24VDC
power Motion controller
supply
Servo amplifier
or less )
3 - 8
SSCNET (/H)
Servo
motor