Motor Controllers - Low Voltage

A diverse range of controllers offering AC motor control, permanent magnet DC motor control, and separately-excited motor control suitable for a wide range of electric vehicles, such as pallet trucks, stacker trucks, tow tractors, forklift trucks, or any other type of battery-powered vehicles. All products offer an excellent combination of compact and robust design, power, performance, functionality, and cost.

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Motor Controllers: Purpose

Motor controllers are used to gradually start, stop and run motors in a programmed manner. They supply voltages and provide signals to motor drives. They can also gradually increase the speed of a motor or torque or reverse the motor’s rotational direction.

Types of Motor Controllers

There are two basic types of motor controllers: electronic and electromechanical. 

Electronic units include soft starting and variable frequency drives and are thought of as sophisticated components. They can be programmed to respond to system inputs and pre-set running conditions. 
Electromechanical units use electromagnetic contractors or relays to stop, start, and reverse the motor's direction.

AC Motor Controllers

AC Motor Controllers are electronic devices that modify the input power to motors by typically adjusting the frequency of the power to the motor to regulate the output speed and torque. Used primarily in process applications to control speed, they are known as variable speed drives or adjustable frequency drives.

DC Motor Controllers

DC Motor Controllers are electrical devices that modify the input power by adjusting the constant or alternating current source to a pulsed, direct current output of varying pulse duration or frequency. 

Servo Motor Controllers

Servo Motor Controllers are electronic devices that modify the input power by adjusting the constant or alternating current source to a pulsed, current output of varying pulse duration or frequency. Servo motors are used in many applications, including machine tools, micro-positioning, and robotics, among many other types of machinery, such as conveyors or spindle drive systems. The controller, commonly integrated with the drive circuits, supplies the control signals to the drive. Servo drives are also known as servomotor amplifiers.

Stepper Motor Controllers

Stepper Motor Controllers are electronic devices that modify the input power by adjusting the constant or alternating current source to a pulsed or "stepped," current output. Stepper motor controllers have been used primarily in motion control applications in manufacturing and construction environments, among others, and control motor speeds, torques, and position. 

FAQS:

What are the types of motor controllers?

There are four primary motor controller and drive types:

  • AC Motor Controllers
  • Brushless & Brushed DC Motor Controllers
  • Servo Motor Controllers
  • Stepper Motor Controllers

Why do I need a motor controller?

A motor controller is a necessary component because a microcontroller can usually only provide 0.1 Amps of current. The requirement of most actuators (DC motors, DC gear motors, servo motors, etc.) is higher than this and requires several amps. The current a motor uses is related to the torque it can provide; for example, a small motor will not consume much current but can’t move a large mass.

How do I choose a motor controller?

Typically motor controllers can only be chosen after you have selected your motors or actuators. It is done like this because you have to consider that the current a motor draws is related to the torque it can provide. So you have to match what will work for each component. 

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