Gas analysis and instrumentation solutions

Fuji Electric variable speed and frequency drive seen from three quarters, with integrated control interface on industrial enclosure

Fuji Electric speed and frequency converter with front control panel, black industrial housing

Variable frequency drive - VFD

A variable speed drive or frequency converter is a device that modulates the speed of electric motors. It adjusts the voltage and/or frequency...

A variable speed drive or variable frequency drive is a device for modulating the speed of electric motors. It adjusts the voltage and/or frequency supplying the motor, offering precise speed control, improved energy efficiency and motor protection against overloads. This device optimizes the performance of motorized systems and reduces energy costs.

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Compact frequency inverter - FRENIC-MINI - C2
ref : FRENIC-MINI - C2
Retail price
depending on configuration
254,00 €
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Pump frequency inverter - FRENIC-AQUA - AQ1
ref : FRENIC-AQUA - AQ1
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depending on configuration
631,00 €
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Frequency inverters for fans - FRENIC-HVAC AR1
ref : FRENIC-HVAC AR1
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depending on configuration
597,00 €
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High-performance frequency inverter - FRENIC-ACE - E3
ref : FRENIC-ACE-E3
Retail price
depending on configuration
300,00 €
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Frequency inverters for materials handling and other applications - FRENIC-ACE - E2
ref : FRENIC-ACE - E2
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depending on configuration
294,00 €
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Frequency inverter for pump and fan - FRENIC-ACE-H E2H
ref : FRENIC-ACE-H E2H
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depending on configuration
350,00 €
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Compact frequency inverter for materials handling - FVR-MICRO - AS1S
ref : FVR-MICRO AS1S
Retail price
depending on configuration
217,00 €
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Frequency inverter for solar pumping - FRENIC-ACE POMPAGE SOLAIRE
ref : FRENIC-ACE SOLAR PUMPING
Retail price
depending on configuration
369,00 €
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Frequency inverters for materials handling and other applications - FRENIC-MEGA - G2
ref : FRENIC-MEGA - G2
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depending on configuration
413,00 €
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Technologies

Discontinuating producs - Variable frequency drive
Discover how Fuji Electric continues to revolutionize the industry with its innovative variable frequency drives. Easily compare old and new references to optimize your operations and improve energy efficiency.

A detailed explanation of the frequency and speed inverter

Range of Fuji Electric variable speed and frequency drives in various sizes, including Frenic-Ace models for industrial motors

How does a motor drive work?

In the industrial automation sector, the variable frequency drive (VFD) is an essential device consisting of a power electronic board (such as IGBT, MOSFET) and a high-speed central control unit (such as a microprocessor or DSP). This device controls and manages a single-phase or three-phase electric motor by modulating the frequency and voltage of its power supply to adjust its speed and torque. The process begins with the conversion of alternating current (AC) to direct current (DC) using a rectifier. The direct current is then modulated into a synthetic alternating current waveform by an inverter, allowing the motor's rotational speed to be increased or decreased, thus providing precise control and more efficient operation.

Line of blue industrial electric motors driving pumps on a piping system in an industrial environment

Nowadays, thanks to software and interface options, the VFD drive has become a high-performance product that enables the user to control motors according to the desired requirements. Fuji Electric has used its expertise, experience and know-how to offer you a selection of the best variable frequency drives on the market, from entry-level to high-end, for your standard or advanced application.

blue abstract technology background — Blue abstract technological background suggesting the notion of speed and industrial performance.

Variable speed drive - Fuji Electric Frenic-Ace variable speed and frequency drive with digital display and front panel control keypad - fuji-electric-frenic-ace

What is the difference between a variable speed drive and a variable frequency drive?

Although the terms are often used interchangeably, it's crucial to understand the difference between these two devices.

Changing Voltage and Frequency :
- A variable speed drive mainly modifies the voltage applied to the motor to control speed.
- A variable frequency drive, on the other hand, adjusts the frequency of the power supply, which affects both motor speed and torque.
Applications :
- Variable speed drives are often used in simpler applications where speed control is the only requirement.
- Variable frequency drives (VFDs) are used in more complex applications requiring precise speed and torque control.
Energy efficiency :
- Variable-frequency drives are generally more energy-efficient than simple variable-speed drives, as they enable more precise and energy-efficient control.

The VFD is also known as a variable speed drive, frequency converter, AC drive, microdrive, and frequency converter.

Automated textile production line with aligned spindles and spools, driven by motors on an industrial machine

What are the applications for frequency drives?

Variable speed and frequency drives are used in a multitude of fields, offering precise control and energy efficiency.

Fans: Used in exhaust fans, air handling units, compressors, air conditioning systems, dryers, boiler fans, temperature control , group-controlled roofs, refrigerators, film manufacturing machines, cooling towers, ventilation, diaphragm seals.
Machine tools: Including grinders, sanders, milling machines, lathes, drilling machines, turning tables, positioning machines for machining centers, motherboard drilling machines, winding machines, presses.
Electric pumps: For use in chillers, potable and tankless water supply systems, submersible motor pumps, vacuum pumps, fountain pumps, cooling water pumps, hot water circulation pumps, well pumps, agricultural storage pumps, water treatment pumps, constant flow pumps, slurry pumps, solar pumps, etc.
Conveyor equipment: Used in cranes, automated warehouses, conveyors, elevators, parking equipment, elevators, escalators, automatic doors, shut-off equipment.
Chemical processing equipment / Woodworking machinery: Includes fluid mixing machines, extruders, vibrators, diaphragm seals , coating machines, drive rollers, conveying machines, planers.

Industrial paper manufacturing facility with large rolls being unwound on an automated production line

Packaging industry: individual and internal packers, wrapping machines, external packers.
Agri-food processing machines: grain mixing, slicing and grinding machines, tea processing machines, rice milling machines, rice sorting machines.
Paper industry / Textile machinery: Spinning machines, knitting machines, textile printing machines, industrial sewing machines, synthetic fiber machines, cutting machines.
Other machines: Automatic mixers for food/medical products, commercial washing machines, offset presses, binders, car washes, shredders, food washing machines, testing equipment, grinders, air screens, automatic blinds, kitchen hoods.

These drives play a crucial role in improving energy efficiency, reducing operating costs, and optimizing productivity in these diverse industrial and commercial applications.

Fuji Electric Frenic-Mega range of variable speed and frequency drives, listed in ascending order of size, for industrial applications — Presentation of the Fuji Electric Frenic-Mega range of variable speed and frequency drives covering various industrial power ratings.

Industrial electrical cabinets incorporating Fuji Electric frequency converters installed in the technical room for motor control

Why use a variable frequency drive?

The use of variable speed drives offers many advantages:

Speed control:The frequency converter modulates motor speed by adjusting the voltage and/or frequency of the power supply. Variable frequency drives (VFDs) are extremely useful in processes requiring precise speed and torque control.
Energy efficiency: By adjusting the motor speed to the needs of the application, the variable speed drive can reduce energy and electricity consumption.
Reduced operating costs: This converter also enables motors to be started and stopped smoothly. This extends the service life of electric motors.
Motor protection:Provides protection against phase reversal, overvoltage, undervoltage, overcurrent, and other abnormal conditions that could damage the motor.
Optimized performance:With precise speed and torque control, the variable speed drive helps optimize the performance and power of motorized systems.
Energy Saving Certificate Installing an electronic speed controller allows you to benefit from the CEE (Energy Saving Certificate), which contributes financially to your investment, either in part or in full. However, it is essential to comply with various requirements in order to be eligible. Optimize your energy savings with this installation while complying with the necessary conditions.

How to size a variable frequency driveand how to choose an inverter for a motor?

Sizing a variable speed drive requires a clear understanding of application requirements and motor characteristics:

Industrial motor and compressor assembly with control cabinet and instrumentation installed in a technical room

Motor power :
- Motor power rating must match frequency converter power rating.
Supply voltage :
- Depending on the mains voltage (220V or 380V), one of two types of variable frequency inverter should be selected: tri/tri input or mono/tri input.
Frequency :
- The rated frequency of the motor must be compatible with that of the inverter.
Speed range and load conditions
- Specific application requirements, such as required speed range and load conditions, must be taken into account.
Protection features :
- Make sure the frequency converter offers the necessary protection against overvoltage, overcurrent and other abnormal conditions.
Additional features and options :
- Look for products with additional features such as diagnostic functions and communication interfaces, which can facilitate maintenance and improve safety.
Environmental compatibility :
- Make sure the speed controller is suitable for the operating environment before installation, e.g. temperature and humidity conditions.
Consideration of Support and Maintenance :
- Take into account the availability of technical support and maintenance services.
Expert consultation :
- Consult your Fuji Electric variable speed drive manufacturer for recommendations based on your needs.

Open electrical cabinets incorporating several Fuji Electric frequency converters with protections, terminal blocks, and industrial cabling

Technical features and benefits of Fuji Electric variable speed drives

Easy installation and operation
Wide range of power ratings and voltage choices in three-phase and single-phase versions
User interface with optimized software, integrated console and large LCD display
Easy parameter setting
Available in IP21 & IP55 versions
DCR and EMC filter
User-customizable language (French, English, etc.)
Numerous functions: Torque vector control, Overload capability, PID loops, Customizable logic and specific macros, Real-time clock, Unit conversion function
Numerous communication interfaces available: Modbus RTU, BACnet MS/TP,
Energy-saving function
Control functions: Analog input/analog output, PID loop, cascade control
Safety features: password protection, SIL2 level, fire mode
Remote control: Extension cable for remote control, man-machine interface
Approved standards: CE directive (CE marking), UL/cUL
Control cabinet solutions available

High energy efficiency
Industrial reliability
Multi-purpose
3-year warranty on all variable speed drives
5-year warranty for FRENIC-AQUA and FRENIC-HVAC

Complete range of Fuji Electric variable speed and frequency drives in various sizes for controlling industrial motors

Choose a Fuji Electric variable speed drive

These variable speed drives are more than essential in modern plants, enabling efficient energy management, precise speed and torque control, and contributing to the overall efficiency of motorized systems. By integrating the right drive into your system, you open the door to more efficient operation, lower operating costs and longer equipment life. Mastering these technologies is a step towards smarter, more economical use of energy in a variety of applications. Fuji Electric is your expert in high-performance variable speed drives.

Our mission is to help you understand this equipment. We help you understand their importance and how they work. Finally, we help you choose and size the ideal drive for your specific needs. As a manufacturer of variable frequency drives, Fuji Electric's experts can help you make an informed choice and optimize the performance of your motorized systems: conveyor systems, cooling fans and test benches, as well as special fields such as elevators, pumping and heating, ventilation and air conditioning (HVAC).

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Guide to selecting variable speed and frequency drives

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