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Rotating the World Sustainably & Reliably with TECO’s Solutions

Variable Speed Drives

Variable Speed Drives Selector

Optimise motor performance and energy efficiency.

What are Variable Speed Drives (VSDs)?

A variable speed drive (VSD), sometimes called an adjustable speed drive (ASD), AC drive or even variable frequency drive (VFD) is an electronic device that functions to control the speed of an AC motor. It functions by converting the incoming AC voltage into DC voltage before inverting it back to AC with both a variable frequency and voltage. 

Essentially, this process allows users to control the rotational speed of connected motor systems. Typically, VSDs are suited for use within industrial applications to control the rotational speed of connected motor systems. They are commonly used within large fans, air conditioners, and industrial fillers. 

Often equipped with electric motors and a controller for regulating the motor’s speed. Likewise, VSDs are sometimes used to control other applications like flow, acceleration, speed, pressure, temperature, torque, and tension.

TECO’s Range of Variable Speed Drives

At present, TECO offers a range of VSDs designed to optimise both motor performance and energy efficiency. TECO’s VSDs include: 

  • The TECO E510 is a VSD with an IP20 enclosure. It offers advanced control options for a variety of industrial applications. 
  • The TECO L510 VSD is equipped with a built-in MODBUS RS485 communication. This allows it to connect and communicate with other divides seamlessly. 
  • The TECO A510s 3 phase IP20 VSD is equipped with a dual core processor and a 32-bit MCU (Microcontroller Unit) along with a ASIC (Application-Specific Integrated Circuit). This ensures that the VSD performs well and that you can maintain precise control over your machinery. 
  • The TECO F510 3 phase IP55 VSD has been designed to maximise efficiency in building automation systems. 

TECO’s range of VSDs are part of their broader range of products, which includes both electric motors and other automation equipment. If you require assistance with selecting an appropriate VSD, do not hesitate to contact us or submit an online inquiry. 

Our products are designed to cater to a range of industries, including but not limited to agriculture, chemical, F&B, mining, water, and wastewater.

Popular applications of VSDs include within: 

  • Crane and hoist machines 
  • Air-conditioning units 
  • Thermal power plants
  • Treadmills 
  • The oil and gas industry
  • Irrigation systems

A VSDs mechanism is fairly simple. The process involves a few key steps. 

First, using a rectifier, incoming AC power is converted to DC. Next, the DC power is smoothed by capacitors. This provides a clean and stable power supply. Following this, the DC power is converted back into AC power with a variable frequency and voltage using an inverter. This enables the drive to adjust the motor’s speed. 

The control circuit monitors and adjusts the frequency and voltage levels to control its speed level. This adjustment is based on the process demands, ensuring that the motor runs at the required speed or torque. By modifying the frequency and voltage of the AC output, VSDs have the ability to control the motor’s speed.

VSDs offer numerous advantages across various applications. Key benefits include: 

  • VSDs reduce energy consumption levels by enabling motors to operate efficiently at the required speed level. This is particularly important within applications where motors aren’t required to run continuously. 
  • VSDs enable the automation of systems. This in turn, eliminates the need for manual labour. 
  • VSDs minimise mechanical and electrical stress on motors. They do so by controlling both acceleration and deceleration, through ensuring that the motor moves in a specialised pattern. 
  • VSDs provide significant cost savings through reduced energy consumption, lower maintenance costs, and minimised downtime. 
  • VSDs contribute to reducing ambient noise emissions.
  1. Start by identifying the specific needs of your application. Consider the type of motor you’re using, the required speed, and specific environmental conditions. Different VSDs are suitable for different applications. 
  2. Next, evaluate the level of control required for your applications. For instance, the A510s models are suitable for precise control.
  3. Now access your communication needs. If you need to connect your VSD to other devices, models with communication capabilities like the L510 might be more suitable. 
  4. Evaluate your enclosure requirements. If you require VSD with protection against dust and water, consider models with an IP55 rating, like the F510.
  5. Need more help? Contact us directly for help in selecting the best VSD for your specific application.

TECO offers a range of VSDs designed specifically for optimising motor performance and improving energy efficiency. TECO’s VSD models come equipped with features like advanced control options and built-in communication suitable for most if not all industrial applications. Choosing TECO means choosing a VSD that is intended to enhance efficiency and is built to last.