Chapter 3  Wiring  ASDA-A2 
3-16     Revision February, 2017 
3.2.2  Connectors and Terminals of the Servo Drive  
Terminal Signal  Name  Description 
DC24V, DC0V 
Power input of the 
control circuit 
Connect to single-phase AC power (select the 
appropriate voltage specification according to the 
product ) 
R, S, T 
Power input of the 
main circuit 
Connect to three-phase AC power (select the 
appropriate voltage specification according to the 
product) 
U, V, W 
FG (
) 
Motor cable 
Connect to servo motor 
Terminal 
Symbol 
Wire Color  Description 
U Red 
Three-phase main 
power cable of the 
motor 
V White 
W Black 
FG( ) 
Green 
Connect to the 
grounding 
 of  the 
servo drive. 
P , D, C,   
Regenerative 
resistor terminal or 
braking unit 
Internal resistor 
The contact between P  and D end 
should be closed; contact between P  
and C end should be opened. 
External 
resistor 
Connect P , C ends to the resistor 
and the contact between P  and D 
end should be opened. 
External 
braking unit 
P  and P  of the brake unit should 
connect to P  and P  respectively. 
The contact between P  and D and 
P  and C should be opened. (N 
terminal is built in L1C, L2C,  and 
R, S, T.) 
P : Connect (+) terminal of V_BUS 
voltage. 
:
 
Connect to (-) terminal of 
V_BUS voltage. 
 
Ground terminal 
Connect to the ground wire of the power and the servo 
motor. 
CN1 
I/O connector 
(Option) 
Connect to the host controller, please refer to Section 
3.4. 
CN2 
Connector (Option) 
Connect to the encoder of the motor, please refer to 
Section 3.5. 
CN3 
Connector (Option) 
Connect to RS-485 or RS-232, please refer to Section 
3.6 
CN4 
USB connector  
(Type B) (Option) 
Connect to personal computer (PC or NOTEBOOK), 
please refer to Section 3.7 
CN5 
Connector (Option) 
Connect to linear scale or encoder for full-closed loop 
and motor feedback. Please refer to Section 3.8.