Variable Frequency Drive (VFD) for Pumps

Pumps are used in industrial installations to transport liquids, for example in process plants, cooling systems and water treatment.
A pump is typically selected for a specific flow rate at a certain head.
In traditional systems, flow is often controlled using valves or throttling devices.

With a variable frequency drive (VFD), the pump speed can be controlled directly.
This allows the flow rate to be precisely adjusted to process demand without energy losses caused by throttling.
Within modern industrial automation, this control is a key element of efficient
drive technology and reliable motor control.

Optimized Process Control with VFDs

By varying the motor frequency, pump flow can be easily adjusted to match real-time system demand.
This ensures stable pressure and flow, enabling efficient pump operation.

Proper VFD integration allows pumps to be connected to
machine control, process automation and pressure control systems.
More technical background on VFD operation can be found in the
Fluxcon variable frequency drives wiki.

Energy Savings with VFDs on Pumps

A key advantage of using VFDs in pump applications is energy savings.
By reducing pump speed when full capacity is not required, energy consumption can be significantly reduced.

Depending on the application, energy savings of approximately 20% to 40% can be achieved.
Since pumps often operate continuously, this can result in substantial cost savings.

Fluxcon also supplies VFDs suitable for modern
permanent magnet synchronous motors.
These motors offer very high efficiency and exceed current energy efficiency standards.

Would you like a calculation example for pump energy savings?
Then visit our VFD FAQ.

IE3 Efficiency Directive

Since January 1, 2015, the IE3 efficiency directive for electric motors has been in force.
All motors from 0.75 kW up to and including 7.5 kW must meet IE2 efficiency requirements,
and motors above 7.5 kW must comply with IE3 efficiency or IE2 in combination with a
variable frequency drive (VFD).

Reduced Wear with VFD-Controlled Pumps

Lower operating speeds extend maintenance intervals.
Without throttling valves, the pump operates more efficiently with reduced mechanical stress.
This results in lower loads on bearings and reduced pressure on seals, leading to less wear and longer service life.

Thanks to the soft start function, pressure spikes (water hammer) are eliminated, preventing system damage.

Improved Performance with VFDs on Pumps

Using a VFD prevents current peaks and maintains a high power factor (cos φ) in the electrical system.

The integrated PID functionality in the Fluxcon series allows constant pressure or flow control.
This enables variable flow rates based on process demand, ensuring optimal pump performance with minimal energy consumption.

Fluxcon VFD Solutions

Fluxcon technical specialists work with you to analyze your processes and identify opportunities for optimization and energy savings.
With the wide Fluxcon product range, you will always find the optimal solution.

Fluxcon is a high-tech company with multiple locations in the Netherlands and operates worldwide.
We offer a broad range of energy-efficient drive and control solutions, including
variable frequency drives, soft starters and control panels.

Fluxcon products are certified by international organizations and used in more than 100 countries.
Fluxcon VFDs stand out due to advanced functionality, ease of use and expert technical support from experienced drive specialists.