Filter
Top Products
4 - 53
4. SIGNALS AND WIRING
4.12 Grounding
WARNING
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.
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
W
V
U
M
U
V
W
CN2
L
11
L
1
L2
L
3
L
21
MC
CN3
NFB
Ensure to connect it to PE
terminal of the servo amplifier.
Do not connect it directly to
the protective earth of
the control panel.
Programmable
controller
Servo amplifier
Control box
Line filter
Protective earth(PE)
Servo motor
Outer
box
Encoder
Note. For 1-phase 200 to 230VAC or 1-phase 100 to 120VAC, connect the power supply to L1 L2 and leave L3 open.
There is no L
3 for 1-phase 100 to 120VAC power supply. Refer to section 1.2 for the power supply specification.