Grounding - Mitsubishi Electric MELSERVO-J5 MR-J5 Series User Manual

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
L11
L21
Protective earth (PE)
CN2
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
Outer box
the protective earth (PE) terminal of the cabinet.
3 SIGNALS AND WIRING
Servo motor
Encoder
U
V M
E
101
3.8 Grounding
3