Instruction manual

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3. SIGNALS AND WIRING
3.7 Grounding
WARNING
Ground the servo amplifier and servo motor securely.
To prevent an electric shock, always connect the earth terminal (E) of the servo
amplifier to earth (E) of the control box (refer to (2) of this section for the fitting
method of the earth terminal).
(1) Connection diagram
The servo amplifier switches the power transistor on-off to supply power to the servo motor.
Depending on the wiring and ground cablerouting, 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: To reduce the influence of external noise, we recommend you to ground the bus cable near
the controller using a cable clamping fixture or to connect three or four data line filters in series.
P24M
P24G
P24L
24VDC
Circuit
protector
Control box
Servo amplifier
CN1A
(Note)
Servo system controller
Earth (E)
Outer
box
Servo motor