DA98A AC Servo Drive Unit
User Manual
CHAPTER 3 WIRING
10
Warning
● The system wiring or check can only be done by qualified personnels.
● Wiring and check can only be done in 5 minutes to avoid electric shock after the
power supply is cut off.
z The wiring must be done by terminal voltage and polarity to avoid equipment
damage or personnel injury.
z Drive unit and servo motor must be well grounded.
Caution
3.1 Standard wiring
The external connection of drive unit is relative to control mode.
1） Position control mode
Fig. 3.1 shows the standard wiring of position control mode.
2） Speed control mode
Fig. 3.2 shows the standard wiring of speed control mode.
3） Wiring
（1） Power supply terminal TB
z Wire diameter ： wire diameter of R, S, T, PE, U, V, W terminals
≥1.5mm
2
(AWG14-16)，wire diameter of r, t terminals≥1.0 mm
2
(AWG16-18).
z Grounding: the grounding wire should be thick, PE terminals of drive unit and servo
motor should be eathed and their resistances are less than 0.1Ω.
z The terminal connection is employed with JUT-1.5-4 pre-insulation cold-press
terminals, and it must be secured firmly.
z It is suggested that three-phase isolation transformer is employed for the power to
avoid the electric shock.
z It is suggested that power supply is connected to a noise filter to improve
anti-interference capability.
z Install non-fusing breaker to cut off external power supply in time when the drive
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