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    020-28008901

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    Electrical Automation Industry Application Solutions
    Position : Home > Solutions > Electrical Automation Industry Application Solutions

    Application of Spindle of Machine Tool

    V11 ACI Inverter in CNC Lathe Spindle Control Program

    一、CNC  Lathe  Work  Site  Photos

    二、Basic Requirements for Machining Operations of CNC Lathe
    1、 High cutting precision
    2、High stability, complex processing, irregular shape parts of the high pass rate
    3、 High flexibility, low impact, the requirements of the control system response speed
    4、High productivity

    三、V11 Variable Frequency Control System Configuration and Schematic
    1、Control system configuration
    ①   V11 frequency inverter ②Spindle motor    ③  Transmission part  ④ Numerical control operating system ⑤ Encoder  ⑥(PG卡)  Drive (PG card)
     Note: install encoder, PG card as optional, selected according to the closed-loop vector control system for machining process.
     2、System schematic diagram:



    图片1.png

    四、Advantages of V11 frequency conversion control system
    1、Fully satisfy the requirement of high productivity, high cutting accuracy, good stability, high flexibility and fast response speed.
    2、V11 vector control mode, dynamic response speed is very fast, so that the motor spindle can be high-speed and stable operation.
    3、Meet the complex and irregular shape parts processing requirements, in the low frequency state (1Hz), can maintain 100% of the output torque, so as to ensure the stable operation of the spindle in low frequency.
    4、Plus deceleration time can be set to 0.1 seconds to achieve fast forward and reverse operation.
    5、Strong anti-interference ability, through strict CNC comprehensive test, will not cause any disturbance to the system.
    6、The speed is high, the rate of change is small at low speed, and the operation is stable.



    五、System  Characteristics  and  Wiring  Diagram of CNC Lathe
    1、The NC lathe system is controlled by two signals to control the rotation of the main shaft of the lathe: One is to simulate the voltage signal 0~10V input, and the other is to simulate the current signal.
    2、The system requires that the spindle of the lathe can be quickly and quickly switched to run.
    3、Basic wiring diagram:


    电器2.png

     

    六、V11 Variable Frequency Control System Main Operation Steps and Parameter Setting Table
    1、From the start of motor and load, frequency converter, motor parameters self-learning (correct input motor nameplate parameters).
    2、Select the vector control mode (SVC), and then enter the required parameters of the system.
    3、The specific parameters are set as follows:

    Function code

    Function description

    Setting value

    Function notes

    F0.00

    Control mode selection

    0

    Speed sensorless vector control (open loop SVC vector control)

    F0.01

    Start stop signal selection

    1

    External terminal start stop

    F0.03

    Frequency source selection

    2 (VI)

    (user can choose) analog voltage signal

    F0.10

    Maximum output frequency

    100HZ

    Set by user requirements

    F0.12

    Operating frequency upper limit

    100HZ

    F0.18

    1 Acceleration time 1

    0.5S

    F019

    1 Deceleration time 1

    0.5S

    F1.06

    DC braking frequency

    0.5HZ

    External braking resistor

    F1.07

    Down DC braking waiting time

    0

    F1.08

    DC braking current

    60

    External braking resistor

    F1.09

    DC braking time

    2S

    F2.01

    Motor rated power

    4KW

    Motor nameplate parameters

    F2.02

    Rated frequency of motor

    50HZ

    F2.03

    Motor rated speed

    1460

    F2.04

    Rated voltage of motor

    380V

    F2.05

    Motor rated current

    8.8A

    F2.11

    Motor parameter identification

    1

    Complete identification of the motor (to be separated from the load)

    F3.06

    VC slip compensation coefficient


    Set by user requirements

    F3.07

    Torque limit setting


    F5.13

    VI lower limit value

    0.00V

    According to the actual requirements of the root user to change

    F5.14

    VI lower limit set

    0.0%

    F5.15

    VI upper limit value

    5

    F5.16

    VI upper limit set

    100

    F5.17

    VI input filtering time

    0.10

    F5.18

    CI lower limit value

    4

    F5.19

    CI lower limit set

    0.0%

    F5.20

    CI upper limit value

    20.0

    F5.21

    CI upper limit set

    100

    F5.22

    CI input filtering time

    0.10


    七、Application
        The frequency conversion control system of the numerical control lathe is only one of the many applications of V11. V11 inverter control chip using high-performance DSP chips produced in the United states with high speed. As the domestic high-end inverter, its excellent quality and performance can meet the practical application requirements.

    Attached: V11 inverter in the numerical control lathe on the measured data:
    1、Configuration of NC Lathe

    Motor Rated Power

    Rated Voltage of Motor

    Motor Rated Current

    Motor Rated Speed

    Analog Signal

    4KW

    380V

    8.8A

    1480

    0~5V

    2、Operation Data

    Inverter Type

    Inverter Rated Power

    Motor Operating Frequency

    Acceleration time

    Deceleration Time

    DC Brake

    Braking Frequency

    Brake Current

    Braking Time

    Shutdown Current

    Braking Efficiency

    V11

    4KW

    90HZ

    0.5S

    0.5S

    Open

    0.5HZ

    60%

    2S

    8.9A

    On time brake

    3、Shutdown Current and Low Frequency Torque

      Inverter Type

    Shutdown Current (plus deceleration time setting)

    Low Frequency Torque

    1秒

    0.3秒

    0.1秒

    V11

    9.5A

     10.6A (on time brake, smooth start stop)

    11.6A (bus voltage stability, on time brake)


    0.5HZ, 100% rated torque

     

     

     

     

     

     



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