Variable Frequency Drives
VFDs are recognized as the preferred method of control to maximize the life of its applied applications. VFDs today also provide integrated control and power. Connecting these two together simplifies information gathering, configuring and programming
No other AC motor control method compares to variable speed drives when it comes to accurate process control. Full-voltage (across the line) starters can only run the motor at full speed, and soft starts and reduced voltage soft starters can only gradually ramp the motor up to full speed, and back down to shutoff. Variable speed drives, on the other hand, can be programmed to run the motor at a precise speed, to stop at a precise position, or to apply a specific amount of torque.