<h2>Motor Operation</h2>
Motors can operate in one of two ways. The first is with direct line starting where the motor is connected directly to the AC line supply of the motor terminals. With this type of connection there is a high in rush (starting) current. This high in rush limits the number of times you can start/stop a motor. The direct line connection also means that there is no speed control.
The second method is with a variable frequency drive, also called a VFD or AC Vector Drive, which can be thought of as a motor controller. The VFD controls the motor by changing the applied voltage and frequency to the motor. With this method the in rush current is also limited, which is much easier on the motor. With the use of a drive you can control the speed of the motor as well as how it starts and stops.
<h2>VFDs Offer Additional Motor Control</h2>
- They allow speed and directional control of industrial equipment and processes.
- They can be programmed precisely to meet load demands and application requirements.
Reducing motor speed can result in a lower required operating power, which can reduce cost. VFDs also help to extend the life of industrial equipment, since smooth acceleration and deceleration results in less shock and less material wear.
<h2>Variable Frequency Drive Applications</h2>
VFDs are used in a number of industrial applications, including:
- Material handling and conveying
- Mixing and blending
- Pumping
- Air handling (fans)
- Automation equipment
- Packaging equipment
- Processing equipment
- and many more
<h2>NORD Drivesystems Manufactures Efficient Variable Frequency Drives</h2>
NORD Drivesystems offers four styles of motor controllers; three variable frequency drives, and one soft starter.