Grounding - Mitsubishi MR-JE-10A Instruction Manual

3. SIGNALS AND WIRING

3.11 Grounding

WARNING
The servo amplifier switches the power transistor on-off to supply power to the servo motor. Depending on
the wiring and ground cable 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 always ground.
To conform to the EMC Directive, refer to the EMC Installation Guidelines (IB(NA)67310).
(Note)
Power
supply
Note. For the power supply specifications, refer to section 1.3.
Ground the servo amplifier and servo motor securely.
To prevent an electric shock, always connect the protective earth (PE) terminal
(marked ) of the servo amplifier to the protective earth (PE) of the cabinet.
MCCB
Cabinet
Servo amplifier
MC
L1
L2
L3
CN1
Protective earth (PE)
3 - 65
CN2
U
V
W
Ensure to connect the
wire to the PE terminal
of the servo amplifier.
Do not connect the wire
directly to the grounding
of the cabinet.
Outer
box
Servo motor
Encoder
U
M
V
W