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Details On Auto Tuning

  • March 16, 2016
When the Shenzhen V&T Technologies Co.,Ltd. inverter runs in vector control mode, it is highly dependent on accurate motor parameters, which is one of the important differences with V/F control mode.To ensure good driving performance and operating efficiency of the frequency inverter, the accurate parameters of the controlled motor can be obtained by three methods: static self-tuning (P9.15=1), rotary self-tuning (P9.15=2) and known parameters of the motor is input by hand .

The first step: completely detach the motor from the load (it is recommended to detach the load) under the condition of complete power failure of the equipment, so that the motor can rotate freely without load.

The second step: after power on, restore all parameters of the frequency inverter to the factory set value (this step is not required).

The third step: "P0.12 maximum output voltage (motor rated voltage), P0.15 basic operating frequency (motor rated frequency), P9.01 motor pole number, P9.02 motor rated speed, P9.03 motor rated power and P9.04 motor rated current" are the basic parameters of the motor, which must be set correctly according to the actual parameters of the nameplate of the controlled motor.

The fourth step: self-tuning on start parameters, please ensure that the motor is in a static state. P9.15=2 select the self-setting mode of rotation parameters and press the RUN key on the operation panel to display "-At-". At this time, the frequency inverter will drive the motor acceleration and deceleration operation, operators should pay attention to safety, tuning operation about 1 minute. After dynamic tuning, the frequency inverter will automatically calculate the key parameters of the motor (P9.05 ~ P9.14).

Notes:
1.If there is a over-current and over-voltage fault in the self-setting process, the acceleration and deceleration time P0.08 and P0.09 can be appropriately extended.
2.If the frequency inverter and motor power do not match, please select static self-setting. After setting, it is necessary to manually change the no-load current P9.05 to about 40% of the rated current P9.04 in motor.
3.The value of magnetic saturation coefficient in P9.10 ~ P9.14 is automatically set in the self-setting time without user setting.
4.Static parameters are self-tuning. Press the "run" button to automatically measure motor parameters P9.06 ~ P9.08.
5.Key motor parameters that affect the operation control of the inverter are determined by performing self-tuning on parameters. These motor parameters will be automatically saved in the inverter after completing the self-tuning process until the next input parameter or self-tuning on parameter again.

6.If the motor can be off the load, it can choose to self-tuning on rotate, otherwise only static self-tuning.


For Shenzhen V&T Technologies Co.,Ltd.


Shenzhen V&T Technologies Co.,Ltd. is a listed company on shenzhen Stock Exchange Center,Stock code is 300484. V&T Company is certificated as a National Hi-tech enterprise and software enterprise, which has fully intellectual property rights and devotes to the R&D, manufacture, sales and technical service of Frequency Inverter(Variable frequency drive) , Servo Drives, Electric Vehicle Motor Controller(E-Drive), Solar pump inverter , Integrated elevator drive etc.. V&T has won the “Technical Innovation” prize awarded by Inverter(AC Drive) Industry Association (IIA), the “The most competitive VFD brands” prize awarded by China Electrical Association, “Electric Vehicle Excellent Technology” Prize awarded by China Electro-Technical Society (CES). V&T has been ranked as one of the Top 10 Chinese Inverter(frequency drive) Enterprises.


Shenzhen V&T Technologies Co.,Ltd. has completely grasped the key control technique and also possesses the capacity of industrialization design and manufacturing. It has developed lots of product series. The product voltage grade mainly contains 200V, 400V, 690V, 1140V, and the power grade varies from 0.4kW to 3000kW, which could meet various application demands from high, medium and low level market.


Under the premise of meeting international standards , we further strengthened the product reliability and environment adaptability to suit harsh and extreme environments. Customized product and industrialized design can better meet medium and high level application demands. The products have been widely used in metallurgy, crane, oil, chemicals, machine tools, electric vehicles, metal processing, building materials, stone, wood processing, ceramics, plastics, air compressor, washing machine, water supply, air conditioning, municipal engineering, textile, printing, mining and other industries.



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