Specifications

3.WIRING
3– 56
WARNING
1. Ground the servo amplifier and servo motor securely.
2. To prevent an electric shock, always connect the protective earth (PE)
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. De-
pending on the wiring and ground cablerouting, the servo amplifier may be affected by the switch-
ing noise (due to di/dt and dv/dt) of the transistor. In order to prevent such trouble from occurring,
ensure to connect an earth referring to the drawing shown below.
To conform to the EMC Directive, refer to the EMC INSTALLATION GUIDELINES (IB(NA)67310).
3-4 Grounding
Control box
Servo amplifier
L1
L2
L3
L11
L21
CN1A
CN1B
NFB
MC
Protective earth (PE)
CN2
U
V
W
Outer
box
Servo motor
Always connect it to PE
terminal of servo amplifier.
Do not connect it directly to
protective earth of control
box.
Encoder
SM
U
V
W
200 to 230VAC
or
Single-phase
230VAC
Three-phase
Line filter
Positioning unit, etc.
(Note)
Note: When using a power supply of 230VAC, single phase, connect it to L1 and L2 terminals, but do not connect
anything to L3 terminal.