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  • VTS30 Mini Book-style Variable Speed Drive Fault Code and Troubleshooting
    • July 28. 2021

    This chapter lists all the faults messages including the possible causes and corrective actions. If the drive faults, the drive output is disabled so that the drive stops controlling the motor, and the following fault code will be displayed on the keypad, the fault contact output operates too. Even if a fault is the same, they are displayed differently on LCD keypad and LED keypad. These are all e...

  • E5-PA Special Inverter for Water Supply
    • August 03. 2021

    V&T E5-PA Special Inverter for Water Supply . For the characteristics of the water supply system, realizing the application requirements of multi-pump switching through single inverter, solving the impact of the start-up on the grid during the water supply process, and the sudden surge of the motor causes the system to surge, and it completely eliminates the water hammer phenomenon. The intern...

  • V5-H Series VFD Drive Frequently Ask Questions About Technical Details
    • August 09. 2021

    FAQ I. Why have abnormal operation in vector control 2 without encoder speed feedback? (1) Check if there exists large difference between the motor rated current and inverter rated current (2) Check if complete motor data identification has been performed (3) Check if the lines for Hall sensor is loosen or dislocated for V5−H−4T18.5G/22L and above power class II. Why have abnormal operation in vec...

  • V6-H Series AC Drive Fault and Alarm Information
    • August 13. 2021

    the following fault code will be displayed on the operation panel, the fault contact output operates, and the output to motor is disable, the motor will coast to stop. For details, refer to the following table to identify and correct the cause of the fault. Fault No. Fault display on panel Fault description Possible causes Corrective actions 1 E.oc1 Over current during acceleration Low grid voltag...

  • V6-H Series VFD Drive Frequently Ask Questions About Debugging
    • August 17. 2021

    I.Why occur over current trip or over load trip in vector control 2 with encoder speed feedback? Check the parameter settings: (1)Check if the motor parameters are properly set (2)Check if the encoder pulse Pd.21 is properly set (3)Check if the encoder direction parameter of Pd.22 is properly set (4)Check if the ratio between motor and encoder Pd.24 is properly set Check the hardware connection (1...

  • Can I put a VFD on any motor?
    • August 30. 2021

    When a variable frequency drive (VFD) is added to an existing system, many potential problems may arise. Reduced cooling at reduced speed Most motors running across the line depend on an internal, shaft-driven fan for cooling. When the motor is operated with a VFD, the motor shaft speed (motor speed) decreases and will cause decreased cooling from the shaft-driven fan. If the load is a standard va...

  • What is the difference between a soft starter and a VFD (variable frequency drive) for electric motors?
    • September 03. 2021

    The major difference between soft starter and VFD are as follows. 1. Soft starter is used to start and stop the motor smoothly., without jerk load. 2. The starting torque delivering capacity of the soft starter is poor as V/f ratio or the flux is much lower than the rated capacity of the motor flux. It is suitable for the driven equipment which start at almost no load. 3. VFD is also soft start an...

  • V&T Spindle AC Servo Drive For Machine Tool
    • September 23. 2021

    The spindle AC servo drives for machine tools can work with CNC systems from a number of manufacturers, widely used in a variety of machine tools such as machining center, lathe, miller, grinder, engraving etc. Machine Tool AC Drive Industry A machine tool plant in Liaoning applied the spindle motor drive to CNC machine tool control A machine tool plant in Jiangsu Production scene A machine t...

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