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Variable Frequency Drives - VFD

Eaton's variable frequency drives, also known as adjustable frequency drives, are designed and manufactured for applications requiring ultra-compact solutions, clean power or future configurability in mind.

VFDs are used to adjust a motor's speed to closely match output requirements in industrial, HVAC, water/wastewater treatment, machinery OEM and other applications. In addition a VFD offers the best energy efficient solution in variable speed applications.

Whether designing a new industrial complex, renovating an existing structure, developing a new machine with a standard product from the catalog or a custom-enclosed drive, Eaton has the right product for your application.

Quick links:   Harmonics Calculator   |   Energy Savings Estimator  |   Flex Center   |   Aftermarket Support   |   Legacy Drives   |   Demand More   |    VFD Training

We have the VFD you need.

Your application might call for an ultra-compact solution, clean power or future configurability. Whether it is a standard product from the catalog or a custom-enclosed VFD solution, Eaton delivers. 

Eaton drives are designed for industrial, HVAC, water/wastewater treatment, machinery OEM, continuous process and commercial  application demands. 

Harmonics issues?  

Don't let harmonics hamper your electrical system. Take a look at our new web presence dedicated to harmonic frequencies in electrical systems.

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Go to ACE DG1 Explosionproof Variable Frequency Drives
ACE DG1 Explosionproof Variable Frequency Drives

ACE DG1 Explosionproof Variable Frequency Drives

Go to CFX passive filter variable frequency drives
CFX passive filter variable frequency drives

CFX passive filter variable frequency drives

Go to CPX 18-pulse variable frequency drives
CPX 18-pulse variable frequency drives

CPX 18-pulse variable frequency drives

Go to H-Max HVAC variable frequency drives
H-Max HVAC variable frequency drives

H-Max HVAC variable frequency drives

Go to LCX liquid-cooled variable frequency drives
LCX liquid-cooled variable frequency drives

LCX liquid-cooled variable frequency drives

Go to M-Max micro variable frequency drives
M-Max micro variable frequency drives

M-Max micro variable frequency drives

Go to PowerXL DA1 advanced variable frequency drives
PowerXL DA1 advanced variable frequency drives

PowerXL DA1 advanced variable frequency drives

Go to PowerXL DC1 compact variable frequency drives
PowerXL DC1 compact variable frequency drives

PowerXL DC1 compact variable frequency drives

Go to PowerXL DE1 variable speed starter
PowerXL DE1 variable speed starter

PowerXL DE1 variable speed starter

Go to PowerXL DG1 general purpose variable frequency drives
PowerXL DG1 general purpose variable frequency drives

PowerXL DG1 general purpose variable frequency drives

Go to PowerXL DH1 HVAC variable frequency drives
PowerXL DH1 HVAC variable frequency drives

PowerXL DH1 HVAC variable frequency drives

Go to PowerXL DM1 micro variable frequency drive
PowerXL DM1 micro variable frequency drive

PowerXL DM1 micro variable frequency drive

Go to PowerXL EGF passive filter variable frequency drives
PowerXL EGF passive filter variable frequency drives

PowerXL EGF passive filter variable frequency drives

Go to PowerXL EGP variable frequency drives
PowerXL EGP variable frequency drives

PowerXL EGP variable frequency drives

Go to PowerXL EGS variable frequency drives
PowerXL EGS variable frequency drives

PowerXL EGS variable frequency drives

Go to RGX regenerative variable frequency drives
RGX regenerative variable frequency drives

RGX regenerative variable frequency drives

Go to SC9000 EP arc-resistant medium-voltage variable frequency drive
SC9000 EP arc-resistant medium-voltage variable frequency drive

SC9000 EP arc-resistant medium-voltage variable frequency drive

Go to SC9000 EP medium-voltage variable frequency drive
SC9000 EP medium-voltage variable frequency drive

SC9000 EP medium-voltage variable frequency drive

Go to SPI Active front end variable frequency drives
SPI Active front end variable frequency drives

SPI Active front end variable frequency drives

Go to SPX high performance variable frequency drives
SPX high performance variable frequency drives

SPX high performance variable frequency drives

Go to SVX industrial variable frequency drives
SVX industrial variable frequency drives

SVX industrial variable frequency drives

How to select a VFD

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Ease-of-integration
Voltage
Environment
Size
Cost
Harmonic mitigation

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These are just some of many variables that impact the selection of the right variable frequency drive (VFD) for your application.

The vastness of the options for the technology can be daunting at best and selecting the wrong VFD can create more problems than the ones that you are attempting to solve.

The following is a list of 8 considerations for selecting a variable frequency drive for your specific application:

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1. Environment

The environment in which the motor and power conversion equipment operates is of prime concern. Conditions such as ambient temperature, cooling air supply and the presence of gas, moisture and dust should all be considered when choosing a drive, its enclosures and protective features.

2. Speed range

The minimum and maximum motor speeds for the application will determine the drive’s base speed.

3. Speed regulation

The allowable amount of speed variation should be considered. Does the application require unvarying speed at all torque values or will variations be tolerated?

4. Torque requirements

The starting, peak and running torques should be considered when selecting a drive. Starting torque requirements can vary from a small percentage of the full load to a value several times full load torque. The peak torque varies because of a change in load conditions or mechanical nature of the machine. The motor torque available to the driven machine must be more than that required by the machine from start to full speed. The greater the excess torque, the more rapid the acceleration potential.

5. Acceleration

The necessary acceleration time should be considered. Acceleration time is directly proportional to the total inertia and inversely proportional to the torque available.

6. Duty cycle

Selecting the proper drive depends on whether the load is steady, varies, follows a repetitive cycle of variation or has pulsating torques. The duty cycle, which is defined as a fixed repetitive load pattern over a given period of time, is expressed as the ratio of on-time to the cycle period. When the operating cycle is such that the drive operates at idle, or a reduced load for more than 25% of the time, the duty cycle becomes a factor in selecting the proper drive

7. Heating

The temperature of a motor or controller is a function of ventilation and losses. Operating self-ventilated motors at reduced speeds may cause above normal temperature rises. Derating or forced ventilation may be necessary to achieve the rated mot

8. Drive type

Does the application require performance elements such as quick speed response or torque control? These may require the use of a flux vector or closed loop vector drive, instead of a volts per hertz drive.