04 Wiring

Last modified by Jim on 2023/11/21 14:04

Main circuit wiring

Main circuit terminals

VD2A servo drive main circuit terminal distribution

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Figure 4-1 VD2A servo drive main circuit terminal distribution

Terminal numberTerminal nameTerminal function
L1Power input terminalSingle-phase 220V AC input is connected to L1 and L3.
L2
L3
P+Braking resistor terminal
  • Use internal braking resistor: short-circuit C and D.
  • Use external braking resistor: Please disconnect the short wire between C and D, and then connect the external braking resistor between P+ and C;
C
D
UMotor power line terminalConnect with the U, V and W of motor to power the motor.
V
W
Ground terminalGround terminalGrounding treatment of the servo drive.

Table 4-1 The name and function of VD2A servo drive main circuit terminal

VD2B servo drive (220V) main circuit terminal distribution

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Figure 4-2 VD2B servo drive (220V) main circuit terminal distribution

Terminal numberTerminal nameTerminal function
L1Power input terminal
  • Three-phase 220V AC input is connected to L1, L2, L3;
  • Single-phase 220V AC input is connected to L1 and L3.
L2
L3
L1CControl power input terminalSingle-phase 220V AC input is connected to L1C and L2C.
L2C
P+Braking resistor terminal
  • Use internal braking resistor: short-circuit C and D.
  • Use external braking resistor: Please disconnect the short wire between C and D, and then connect the external braking resistor between P+ and C.
C
D
UMotor power line terminalConnect with the U, V and W of motor to power the motor.
V
W
Ground terminalGround terminalGrounding treatment of the servo drive.

Table 4-2 The name and function of VD2B servo drive (220V) main circuit terminal

VD2B servo drive (380V) main circuit terminal distribution

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Figure 4-3 VD2B servo drive (380V) main circuit terminal distribution

Terminal numberTerminal nameTerminal function
L1Power input terminalThree-phase 380V AC input is connected to L1, L2, L3;
L2
L3
L1CControl power input terminalSingle-phase 380V AC input is connected to L1C and L2C.
L2C
P+Braking resistor terminal
  • Use internal braking resistor: short-circuit C and D.
  • Use external braking resistor: Please disconnect the short wire between C and D, and then connect the external braking resistor between P+ and C.
C
D
UMotor power line terminalConnect with the U, V and W of motor to power the motor.
V
W
Ground terminalGround terminalGrounding treatment of servo drive.

Table 4-3 The name and function of VD2B servo drive (380V) main circuit terminal

VD2F servo drive main circuit terminal distribution

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Figure 4-4 VD2F servo drive main circuit terminal distribution

Terminal numberTerminal nameTerminal function
L1Power input terminalConnect single-phase 220V input power
L2
P+Braking resistor terminal
  • Use internal braking resistor: short-circuit C and D.
  • Use external braking resistor: Please disconnect the short wire between C and D, and then connect the external braking resistor between P+ and C.
C
D
P+Common DC bus terminalDC bus terminal of servo drive
N
UMotor power line terminalConnect with the U, V and W of the motor to power the motor.
V
W
PEGround terminalGrounding treatment of the servo drive.

Table 4-4 The name and function of VD2F servo drive main circuit terminal

Power wiring

Use single-phase 220V power supply model: VD2-010SA1G and VD2-014SA1G

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Figure 4-5 VD2A drive single-phase 220V main circuit wiring

Use single-phase 220V power supply model: VD2-016SA1G、VD2-019SA1G

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Figure 4-6 VD2B drive single-phase 220V main circuit wiring

Use three-phase 220V power supply model: VD2-021SA1G、VD2-025SA1G、VD2-030SA1G

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Figure 4-7 VD2B drive three-phase 220V main circuit wiring

Use single-phase 220V power supply model: VD2F-010SA1P、VD2F-014SA1P

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Figure 4-8 VD2F drive single-phase 220V main circuit wiring

Use three-phase 380V power supply model: VD2-021TA1G

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Figure 4-9 VD2B drive three-phase 380V main circuit wiring

Precautions

  1. Do not connect the input power cord to the output terminals U, V, W, otherwise the servo drive will be damaged. When using the built-in braking resistor, C and D must be connected (factory default connection).
  2. When the cables are bundled and used in pipes, etc., due to the deterioration of heat dissipation conditions, please consider the allowable current reduction rate.
  3. When the temperature in the cabinet is higher than the cable temperature limit, please choose a cable with a larger cable temperature limit, and it is recommended that the cable wire use Teflon wire. Please pay attention to the warmth of the cable in the low temperature environment. Generally, the surface of the cable is easy to harden and break under the low temperature environment.
  4. The bending radius of the cable should be more than 10 times the outer diameter of the cable itself to prevent the core of the cable from breaking due to long-term bending.

Power line connection

Power line

Wecon VD2 series servo drives have 3 kinds of interface power cables: rectangular plug, aviation plug and in-line type.

Connector exteriorTerminal pin distributionPin description

Motor flange

image-20220610092710-1.pngimage-20220610092728-2.pngRectangular plug
Pin numberSignal nameColor
1URed
2VWhite
3WBlack
4PEYellow-green

40

60

80

Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_9335f5058d76f79a.gifimage-20220610100433-1.pngAviation plug
Pin numberSignal nameColor
2UBlack
4VYellow-green
3WBlack
1PEBlack

110

130

Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_77117dacdd5935b9.gifimage-20220611124053-4.pngIn-line type plug
Pin numberSignal nameColor
3URed
1VWhite
2WBlack
4PEYellow-green

60

80

Table 4-5 Power cable servo motor side connector

✎Note: The color of the lines is subject to the actual product. The lines described in this manual are all lines of Wecon.

Brake device cable

Connector exteriorterminal pin distributionMotor flange
WD seriesWecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_9be5695e6c0fd897.gif
Pin numberSignal name
1BR+
2BR-

40

60

80

WE seriesimage-20220611124106-5.png
Pin numberSignal name
1DC 24V
2GND
3-

80

110

130

Encoder cable connection

✎ Note: It is recommended that the encoder cable should not exceed 10m, otherwise it may cause an error A93.

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Figure 4-10 Encoder connection line wiring

Connector exteriorTerminal pin distributionPin description
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Pin numberSignal namePin numberSignal name
15V4-
2GND5SD+
3-6SD-

Table 4-6 Encoder cable servo drive side connector

Connector exterior and terminal pin distributionMotor flange

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image-20220608142110-6.png

40

60

80

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Pin numberSignal name
75V
8GND
4SD+
5SD-
3Shield
1Battery+
2Battery-

Table 4-7 Absolute value encoder line connector (Rectangular plug)

Drive side J1394DescriptionMotor side
Pin numberSignal nameRectangular plug pin numberCable     color
15VEncoder +5v power7Blue
2GNDEncoder power ground8Orange
5SD+Serial communication signal +4Green
6SD-Serial communication signal -5Brown
ShellShieldShield3--
--Battery+1*Pink
--Battery-2*Pink-Black

Table 4-8 Connection of encoder line pin

The pin with “*” indicates the signal line of encoder battery. If the multi-turn battery memory function is not used, you don’t need to connect the signal lines. It is only used as single turn encoder line at this time.

企业微信截图_16606338254815.png

✎ Note: The color of the line is subject to the actual product. The lines described in this manual are all lines of Wecon!

Connector shape and terminal pin distributionMotor flange

Wecon VD2 SA Series Servo Drives Manual (Full V1.1)_html_d450a92cc1507fcd.png

image-20220608142557-7.png

110

130

image-20220608144304-1.png

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Pin numberSignal name
75V
5GND
6SD+
4SD-
1Shield
3Battery+
2Battery-

Table 4-9 Absolute value encoder line connector (Aviation plug)

Drive side J1394DescriptionMotor side
Pin numberSignal name

Aviation plug pin number

Cable color
15VEncoder +5v power7Blue
2GNDEncoder power ground5Orange
5SD+Serial communication signal +6Green
6SD-Serial communication signal -4Brown
ShellShieldShield1-
--Battery+3*Pink
--Battery-2*Pink-Black

Table 4-10 Absolute encoder cable connector (aviation socket)

The pin with “*” indicates the signal line of encoder battery. If the multi-turn battery memory function is not used, you don’t need to connect the signal lines. It is only used as single turn encoder line at this time.

✎ Note: The color of the cable is subject to the actual product. The cables described in this manual are all cables of Wecon!

Connector shape and terminal pin distribution

Motor

flange

image-20220608144543-3.png

image-20220608144728-6.png

60

80

image-20220608144619-5.png

image-20220608144750-7.png

Pin numberSignal name
75V
5GND
6SD+
4SD-
1Shield
3Battery+
2Battery-

Table 4-11 Absolute encoder cable connector (in-line type)

Drive side J1394DescriptionMotor side
Pin numberSignal name

In-line plug pin number

Cable color
15VEncoder +5v power7Blue
2GNDEncoder power ground5Orange
5SD+Serial communication signal +6Green
6SD-Serial communication signal -4Brown
ShellShieldShield1-
--Battery+3*Brown
--Battery-2*Black

Table 4-12 Connection of encoder line pin

The pin with “*” indicates the signal line of encoder battery. If the multi-turn battery memory function is not used, you don’t need to connect the signal lines. It is only used as single turn encoder line at this time.

✎Note: The color of the cable is subject to the actual product. The cables described in this manual are all cables of Wecon!

Servo drive control input and output wiring

CN2 pin distribution

VD2A and VD2B servo drive control input and output pin distribution (CN2 interface)

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Figure 4-11 VD2A and VD2B servo drive control input and output pin distribution

Pin numberSignal namePin numberSignal namePin numberSignal name
1-16GND31-
2AI_2+17GND32AI_1+
3AI_2-18-33AI_1-
4DO1-19DO3-34GND
5DO1+20DO3+35-
6DO2-21DO4-36-
7DO2+22DO4+37-
8SS23DI538-
9DI124DI639-
10DI225DI740SIGN-
11DI326DI841SIGN+
12DI427GND42PULS-
13PAO-28PAO+43PULS+
14PBO-29PBO+44PL
15PZO-30PZO+----

Table 4-13 CN2 interface definition of VD2A and VD2B servo drive

VD2-0xxSA1H drive control input and output pin distribution (CN2 interface)

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Pin numberSignal namePin numberSignal namePin numberSignal name
1--16--31--
2--17--32--
3--18--33--
4DOCOM19DOCOM34--
5DO1+20DO3+35DOCOM
6DOCOM21DOCOM36--
7DO2+22DO4+3724V
8SS23DI538--
9DI124DI639--
10DI225DI740SIGN-
11DI326DI841SIGN+
12DI427--42PULS-
13--28--43PULS+
14--29--44PL
15--30------

Table 4-14 CN2 interface definition of VD2-0xxSA1H servo drive

VD2F servo drive control input and output pin distribution (CN2 interface)

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Figure 4-13 VD2F servo drive control input and output pin distribution

Pin numberSignal namePin numberSignal namePin numberSignal name
1DO36DO411PL
2DO17DO212PULS+
3SS8DOCOM13PULS-
4DI39DI414SIGN+
5DI110DI215SIGN-

Table 4-15 CN2 interface definition of VD2F servo drive

Wiring diagram

VD2A and VD2B servo drive

4-11.jpg

Figure 4-14 Wiring diagram of each mode

✎Note: Please refer to "Table 4-13 CN2 interface definition of VD2A and VD2B servo drive" for the pin numbers in the figure.

VD2-0xxSA1H servo drive

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Figure 4-12 VD2-0xxSA1H servo drive control input and output pin distribution

✎Note: Please refer to "Table 4-14 CN2 interface definition of VD2-0xxSA1H servo drive" for the pin numbers in the figure. 

VD2F servo drive

image-20220608145058-9.png

Figure 4-15 Position pulse mode wiring

✎Note: Please refer to "Table 4-15 CN2 interface definition of VD2F servo drive" for the pin numbers in the figure.

Position instruction input signal

Signal nameVD2A and VD2B pin numberVD2F pin numberFunction
PULS+4312

Low-speed pulse input modes: differential input, open collector.

There are three types of input pulse:

  1. Direction + pulse (positive logic);
  2. CW/CCW;
  3. A and B phase quadrature pulses (4 times the frequency).
PULS-4213
SIGN+4114
SIGN-4015
PL4411External power input interface for instruction pulse.

Table 4-16 Position instruction signal description

The instruction pulse and sign output circuit on the host device side can be selected from differential output or open collector output. The maximum input frequency is shown in the table.

Pulse methodDifferenceOpen collector
Maximum frequency500KHz200KHz

Differential input

The connection of differential input is shown in Figure 4-9

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Figure 4-16 VD2A and VD2B servo drive differential input connection

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Figure 4-17 VD2F servo drive differential input connection

Open collector input

  • Open collector input connection
image-20220706104705-4.jpeg

Figure 4-18 VD2A and VD2B servo drive open collector input connection

image-20220706104712-5.jpeg

Figure 4-19 VD2F servo drive open collector input connection

  • NPN and PNP wiring

image-20220706104746-7.jpeg

image-20220706104753-8.jpeg

NPNPNP
Figure 4-20 Triode Wiring

Analog input signal

The analog input signal is only supported by VD2A and VD2B servo drives.

Pin numberSignal nameFunction
32AI_1+

AI_1 analog input signal, resolution 12-bit.

Input voltage range: -10V to +10V.

33AI_1-
2AI_2+

AI_2 analog input signal, resolution 12-bit.

Input voltage range: -10V to +10V.

3AI_2-
17GNDAnalog input signal ground.
34GND

Table 4-17 Analog input signal description

image-20220611152916-3.jpeg

Figure 4-21 Analog input wiring

Digital input&output signals

VD2A and VD2B servo drives

Pin numberSignal nameDefault function
9DI1Servo enable
10DI2Faults and alarms clearance
11DI3Forward drive prohibited
12DI4Reverse drive prohibited
23DI5Inverted instruction
24DI6Instruction pulse prohibited input
25DI7Not used
26DI8Not used
8SS24V
4DO1-Rotation detection
5DO1+
6DO2-Faults signal
7DO2+
19DO3-Servo is ready
20DO3+
21DO4-Positioning completed
22DO4+

Table 4-18 DI/DO signal description

Digital input circuit

  • When the control device (HMI/PLC) is relay output
image-20220706104845-9.jpeg

Figure 4-22 Relay output

  • When the control device (HMI/PLC) is open collector output
image-20220706104858-10.jpeg

Figure 4-23 Open collector output

Digital output circuit

  • When the control device (HMI/PLC) is relay input
image-20220611153124-4.jpeg

Figure 4-24 Relay input

  • When the control device (HMI/PLC) is optocoupler input
image-20220611153802-10.jpeg

Figure 4-25 Optocoupler input

VD2-0xxSA1H servo drives

Pin numberPin nameDefault function
9DI1Servo enable
10DI2Fault and alarm clearance
11DI3Forward drive prohibited
12DI4Reverse drive prohibited
23DI5Inverted command
24DI6command pulse prohibited input
25DI7Not used
26DI8Not used
8SSPower input (24V)
5DO1+Fault signal
7DO2+Pulse frequency division output (Z phase)
20DO3+Pulse frequency division output (A phase)
22DO4+Pulse frequency division output (B phase)
4/6/19/21/35DOCOMDO Power Common (0V)
3724V+DO power input (24V)

Table 4-19 DI/DO signal description

Digital output circuit

  • When the control device(HMI/PLC) is relay input
企业微信截图_16841196784478.png

Figure 4-26 Relay input

  • When the control device (HMI/PLC) is optocoupler input
wps4.png

Figure 4-27 Optocoupler input

The digital output circuit wiring of VD2-0xxSA1H Servo Drive is different from that of VD2A and VD2F servo drives. VD2-0xxSA1H needs to be connected to external 24V DC power supply. (CN2_35 pin and CN2_37 pin are connected to COM0 and 24V+ of external 24V power supply respectively). If the access current is too large and the DOCOM line is relatively thin, servo drives need to access multiple DOCOM to achieve the shunt effect.

VD2F servo drive

Pin numberPin nameDefault function
5DI1Servo enable
10DI2Faults and alarms clearance
4DI3Forward drive prohibited
9DI4Reverse drive prohibited
3SS24V
2DO1Rotation detection
7DO2Fault signal
1DO3Servo is ready
6DO4Positioning completed
8DOCOMDo common terminal

Table 4-20 DI/DO signal description

Digital input circuit

  • When the control device (HMI/PLC) is relay output
image-20220706105605-11.jpeg

Figure 4-28 Relay output

  • When the control device (HMI/PLC) is open collector output
image-20220706110028-12.jpeg

Figure 4-29 Open collector output

Digital output circuit

  • When the control device (HMI/PLC) is relay input
image-20220611154302-14.jpeg

Figure 4-30 Relay output

  • When the control device (HMI/PLC) is optocoupler input
image-20220611154225-13.jpeg

Figure 4-31 Optocoupler input

Brake wiring

The brake is a mechanism that prevents the servo motor shaft from moving when the servo drive is in a non-running state, so that the motor remains in position lock so that the moving part of the machinery will not move due to self-weight or external force.

The brake input signal is no polar. You need to use 24V power. The standard wiring between brake signal BK and brake power is as below.

image-20220611153503-7.jpeg

Figure 4-32 Brake wiring of VD2A and VD2B

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Figure 4-33 Brake wiring of VD2-0xxSA1H

image-20220611153514-8.jpeg

Figure 4-34 Brake wiring of VD2F

Communication signal wiring

Wecon VD2 series servo drive supports two communication modes: RS-422 and RS-485. The communication port is RJ45 socket. The exterior of communication terminal is shown in Figure 4-31

image-20220706114233-13.png

Figure 4-35 Pin number of an RJ45 socket

The communication modes supported by the driver communication ports are in the following table.

VD2 A&VD2 BVD2F
PortCommunication modePortCommunication mode
CN3Only RS422CN3RS422, RS485 communication mode choose one of two. Set by function code P12-05
CN5Only RS485CN4
CN6✎Note: The CN3 and CN4 interfaces are physically connected and are actually the same communication interface. When P12-05 is set to 1, CN3 and CN4 use RS485 communication mode. If the value is set to 0, both use RS422 communication mode.
✎Note: The CN5 and CN6 interfaces are physically connected and are actually the same communication interface.

Table 4-21 Communication port communication modes

Communication connection with servo host computer (RS422)

Servo drives communicate with the host computer via RS422 communication. A USB to RS422 (RJ45 connector) cable is required for communication, and you need to equip it by yourselves.

  • VD2A&VD2B

VD2A and VD2B servo drives communicate with the host computer via the CN3 interface by RS422 communication. Figure 4-36 and Figure 4-37 show the communication connections.

image-20220706114358-14.png

Figure 4-36 The Connection between VD2A drive and PC

image-20220706114416-15.png

Figure 4-37 The connection between VD2B drive and PC

CN3PinNameFunction description

image-20220706114749-4.png

1RX-Computer sends negative terminal (drive receives negative)
2RX+Computer sends positive terminal (drive receives positive)
3TX-Computer receives negative terminal (drive sends negative)
4GNDGround terminal
5NCNot used
6TX+Computer receives positive terminal (drive sends positive)
7NCNot used
8NCNot used

Table 4-22 VD2A and VD2B pin definitions for CN3

  • VD2F

VD2F servo drive communicates with the host computer via the CN3 or CN4 interface byRS422 communication. The communication diagrams of VD2F servo drive and host computer are shown in Figure 4-38.

image-20220706114622-16.png

Figure 4-38 The connection between VD2F drive and PC

CN3&CN4PinNameFunction description
image-20220706114745-3.png1RX-Computer sends negative terminal (drive receives negative)
2RX+Computer sends positive terminal (drive receives positive)
3TX-Computer receives negative terminal (drive sends negative)
4GNDGround terminal
5NCNot used
6TX+Computer receives positive terminal (drive sends positive)
7NCNot used
8NCNot used

Table 4-23 VD2F pin definitions for CN3/CN4 interfaces

Communication connection with PLC and other device (RS485)

VD2A and VD2B servo drives communicate with PLC and other devices for Modbus via CN5 or CN6 interface (located on the top of servo drive) by RS485 communication.

CN5&CN6PinNameFunction description
image-20220706114742-2.png1485-Computer sends negative terminal (drive receives negative)
2485+Computer sends positive terminal (drive receives positive)
3NCNot used
4GNDGround terminal
5GNDGround terminal
6NCNot used
7ReservedReserved
8GNDGround terminal

Table 4-24 VD2A and VD2B pin definition of CN5/CN6 interface

VD2F servo drives communicate with PLC and other devices for Modbus via CN3 or CN4 interface (located on the top of servo drive) by RS485 communication.

CN3&CN4PinNameFunction description
image-20220706114737-1.png1485-Computer sends negative terminal (drive receives negative)
2485+Computer sends positive terminal (drive receives positive)
3-Computer receives negative terminal
4GNDGround terminal
5-Not used
6-Computer receives positive terminal
7-Not used
8-Not used

Table 4-25 VD2F pin definition of CN3/CN4 interfaces