General Automation

General Automation applications

VFDs provide multiple benefits in automation, including improved process control, energy savings, extended equipment life, and reduced maintenance requirements. The specific application of a VFD depends on the type of load (constant or variable torque), the characteristics of the equipment it's driving, and the performance requirements of the system.

Some of the most common applications of VFDs in automation systems are below, but the list is truly endless.

General Automation applications

VFDs are used in virtually every industry sector across a massive rage of automation applications.

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Pump and Fan Control

One of the most common applications of VFDs is in controlling pumps and fans in HVAC systems. By adjusting the speed of these components based on the demand, energy usage is significantly reduced. For instance, instead of running a pump at full speed all the time, a VFD can be used to slow it down during periods of low demand.

Conveyor Systems

In manufacturing and production lines, conveyor belt speeds often need to be adjusted to match the pace of production. VFDs can be used to regulate the speed of these conveyors, providing flexibility and precise control.

Mixing Operations

In industries where materials need to be mixed (such as food and beverage, pharmaceuticals, or chemicals), VFDs are used to control the speed of the mixing motors. This allows for precise control over the mixing process and the ability to adjust to different mixing requirements.

Machine Tool Drives

VFDs are used in various machine tools (like lathes, mills, and grinders) to control the speed of the spindle motor, ensuring the correct speed for the cutting or grinding process.

Crane and Hoist Operations

In applications that require lifting, lowering, or transporting heavy objects, the speed and torque control provided by VFDs are invaluable. They can provide smooth starts and stops, preventing jerks and swings that could be dangerous.

Compressor Control

In systems that require pressurized air or gas (like in the oil and gas industry), VFDs are used to control the speed of compressors. This helps in maintaining the desired pressure levels while conserving energy. In refrigeration and cooling systems VFDs are used to control compressors in industries ranging from food & beverage to healthcare and pharmaceuticals.

Wastewater Treatment

VFDs are used in wastewater treatment plants to control the speed of pumps and aerators, optimizing the treatment process while minimizing energy use.

For more detailed explanation of variable frequency drives, what they do and how they do it, visit our iKnow VFD knowledge base.