Grounding - Mitsubishi Electric 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.
To conform to the EMC Directive, refer to "EMC Installation Guidelines".
MCCB
Power supply
3 SIGNALS AND WIRING
84
3.8 Grounding
Cabinet
Servo amplifier
MC
L1
L2
L3
L11
L21
Protective earth (PE)
CN2
U
V
W
Connect the wire to the PE terminal of the servo
amplifier. Do not connect the wire directly to the
protective earth of the cabinet.
Outer box
Servo motor
Encoder
U
V M
W