Grounding - Mitsubishi Electric EZMOTION MR-E Super MR-E-10A-QW003 Instruction Manual

3. SIGNALS AND WIRING

3.10 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.
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To conform to the EMC Directive, refer to the EMC Installation Guidelines (IB(NA)67310).
(Note)
Power supply
Note. For 1-phase 230VAC, connect the power supply to L
specification.
Ground the servo amplifier and servo motor securely.
To prevent an electric shock, always connect the protective earth (PE) terminal
(terminal marked ) of the servo amplifier with the protective earth (PE) of the
control box.
Control box
NFB
Protective earth(PE)
MC Servo amplifier
CN2
L
1
L
2
L
3
U
V
W
CN1
Outer
box
, L and leave L open. Refer to section 1.3 for the power supply
3
1 2
3 - 44
Servo motor
Encoder
U
V M
W
Ensure to connect it to PE
terminal of the servo amplifier.
Do not connect it directly to
the protective earth of
the control panel.