Mitsubishi Q170MCPU User Manual page 89

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 systems, radiated and induced noises
from other equipment, servo amplifiers and their cables, and electromagnetic
noises from conductors. 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.
100/200VAC Line noise filter
(Note): Be sure to ground the line noise filter, Motion controller, servo amplifier and
servomotor. (Ground resistance : 100
24VDC
Motion
power
controller
supply
SSCNET
Servo amplifier
or less )
3 - 8
Servo-
motor