Mitsubishi Q170MCPU, User Manual

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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.
Line noise filter
100/200VAC
SSCNET
Servo amplifier
Servo-
motor
Motion
controller
24VDC
power
supply
(Note): Be sure to ground the line noise filter, Motion controller, servo amplifier and
servomotor. (Ground resistance : 100 or less)