Chapter 3  Wiring  ASDA-A2 
3-2     Revision February, 2017 
NOTE
 
Installation notes: 
1.  Check if the power and wiring among R, S, T and L1c, L2c are correct. 
Please refer to Chapter 11 for Specifications. Make sure the input voltage 
is correct, or it might damage the servo drive or danger may occur. 
2.  Please check if the output terminal U, V, W of the servo motor is correctly 
wired. The incorrect wiring may disable the operation of the motor or cause 
malfunction. 
3.  When applying to the external regenerative resistor, the contact between P
 and D should be opened and the external regenerative resistor should 
connect to terminal P  and C. When applying to the internal regenerative 
resistor, the contact between P  and D should be closed and the contact 
between P  and C should be opened. 
4.  When an alarm occurs or the system is in emergency stop status, use 
ALARM or WARN to output and disconnect the power of magnetic 
contactor in order to disconnect the power of servo drive. 
 
3.1.2  Connectors and Terminals of Servo Drive 
Terminal 
Signal 
Name  Description 
L1c, L2c 
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 the 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 ground 
terminal (
) 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.