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3.8
Grounding
The servo amplifier supplies power to the servo motor by switching on and off a power transistor. Depending on the wiring and
ground wire routing, the servo amplifier may be affected by the switching noise (due to di/dt and dv/dt) of the transistor. To
prevent such a fault, refer to the following diagram and ground it.
For information on how to comply with the EMC Directive, refer to "EMC Installation Guidelines".
MCCB
Power supply
Cabinet
Servo amplifier
MC
L1
L2
L3
Protective earth (PE)
CN2
U
U
V
W
W
To ground the servo motor, connect the grounding
lead wire to the servo amplifier, then connect the wire
from the servo amplifier to the ground via the protective
earth (PE) terminal of the cabinet. Do not connect the wire
directly to the protective earth (PE) terminal of the cabinet.
Outer box
3 SIGNALS AND WIRING
Servo motor
Encoder
V
M
E
41
3.8 Grounding
3
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