Grounding - Mitsubishi Electric Melservo-J3 Series MR-J3-B Instruction Manual
Melservo j3 series general-purpose ac servo sscnet compatible
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Also See for Melservo-J3 Series MR-J3-B:
- Instruction manual (802 pages) ,
- Manual (668 pages) ,
- Handbook (590 pages)
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3. SIGNALS AND WIRING
3.12 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).
NFB
(Note)
Power supply
Note: For 1-phase 200V to 230VAC, connect the power supply to L
There is no L
for 1-phase 100 to 120VAC power supply. Refer to section 1.3 for the power supply specification.
3
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
Protective earth(PE)
MC
Servo amplifier
CN2
L
1
L
2
L
3
L
11
U
L
21
V
W
CN1A
Outer
box
L
and leave L
1
2
3 - 50
Servo motor
U
V
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.
open.
3
Encoder
M
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Troubleshooting
