Can I make my lathe variable speed?
Having the step pulleys between the motor and load will allow you to run the lathe very slow and still be variable in speed within the slow pulley/belt position without slowing the motor to less than 50%.
What is VFD drive and how it works?
A VFD or variable frequency drive is an electronic device used to control an AC induction motor or synchronous motor. A VFD controls the torque, speed, and direction of the motor, smoothly starting and accelerating the motor to the desired speed at a controlled acceleration rate.
What are VFD drives used for?
The most common uses of a VFD are for control of fans, pumps and compressors, and these applications account for 75% of all drives operating globally. Soft starters and across-the-line contactors are other, less sophisticated types of motor controllers.
What is the difference between VFD and drive?
While a servo drive needs a command signal given to the motor in order to compare the real and desired position of the motor, a VFD directly controls the voltage and frequency supplied to the motor. VFDs are also known by other names such as AC drive, adjustable-frequency drive, inverter, and microdrive.
How does a variable speed lathe work?
On a machine with variable speed control, the user can simply adjust a lever to change the speed. On at least certain models, the speed can only be changed while the machine is running.
How do you control a VFD?
The VFD can be controlled remotely by using PLC/DCS systems. The PLC has to give set point for VFD drive to control the motor speed, this can achieved either automatically from the PLC or by the operator action from the HMI.
Where are VFDs used?
VFD stands for Variable Frequency Drive. They are used for controlling the speed of an AC motor. They are also used for ramping up a motor for a smooth startup, or to prevent a heavy load from straining the motor on startup.
Is a VFD a servo?
Servo drive systems are capable of quick acceleration and deceleration and can follow exact motion paths whether point to point or with defined contouring. VFDs on the other hand are paired with induction motors and are used in applications that need velocity control.
Can a VFD run a servo motor?
Using variable frequency drives for the servo motor is quite possible, only if the application is not critical in positioning control purpose.