Equipment manufacturers seeking to give induction motors a selectable scalar (V/F) or voltage vector control (VVW) now have a new solution at their fingertips. The CFW100 Mini Drive recently introduced by WEG Electric Corporation is the smallest volume variable speed drive (VSD) in the market, but it provides the power OEMs are looking for as well as HMI and plug and play philosophy, with easy and fast installation and operation. The CFW100 is a single-phase variable speed drive developed for simple applications ranging from 0.18 kilowatts to 0.75 kilowatts (0.25 to 1 horsepower).
The WEG CFW100 Mini Drive has power ranges of 1/4, 1/3, 3/4 and 1 horsepower at 230 VAC with single-phase in and 1.5A, 2.6A and 4.2A three-phase output current. Its simplicity and flexibility are unsurpassed with design features such as built-in HMI, DIN rail mounting, detachable fan for easy maintenance and plug-in modules for communication and I/O options. All this in a size no larger than a typical panel contactor.
Programing is easy with the built in keypad that monitors two different parameters at the same time along with operation status, alarms and faults. A remote keypad CFW100-HMIR connected through a USB cable or remote serial connection for longer distances is also available. The CFW100 works with WEG’s Superdrive G2 programing control software, available free from the WEG Electric website.
WEG Electric’s CFW100 Mini Drive offers many features in a small package. The CFW100 is a single-phase variable speed drive designed with OEM’s and end users in mind. It is the smallest variable frequency drive with HMI on the market and is designed to handle 150 percent overload for sixty seconds at 122 degrees Fahrenheit (50 degrees Celsius) ambient temperature rating.
A full complement of plug-in communication and I/O modules are available to meet most machine designer’s application requirements. A flash memory module is available to upload and transfer the drive parameters and programmable logic controller program to other CFW100 drives. Powered by internal batteries, the flash memory module has the capacity for over five thousand operations and can be used without applying power to the variable frequency drive. The module saves drive parameters and the PLC code directly from the Soft PLC feature. The CFW100 can interface using a USB connection, Bluetooth, or infrared wireless.
The built-in programmable logic controller enables the variable frequency drive to do much more than just turn a motor. Programing flexibility combined with network and I/O options make the CFW100 the most powerful drive of its size available. This built-in programmable logic controller often eliminates the need for an external programmable logic controller, which reduces cost and optimizes space.
For a small compact package, the CFW100 is extremely robust allowing it to accept an overload of 150 percent for one minute, every six minutes in a 122 degrees Fahrenheit (50 degrees Celsius) ambient. This capability eliminates the need for the machine designer to oversize the variable frequency drive.
Along with all these features you also receive WEG quality advantages. Each CFW100 is tested under load at the factory, has protection against ground fault, short circuit and over temperature and all are manufactured with conformal coated circuit boards classified as 3C2 per IEC specification 60721-3-3. ■
About the Author
Gerardo Elias is the marketing manager, North and Central America, for WEG Electric Corporation and can be reached at 678.249.2022. Founded in 1961, WEG has grown into a global solutions provider of electric-electronic technologies and equipment and is the largest industrial electric motor manufacturer in the Americas and one of the largest manufacturers of electric motors in the world. For more information, visit

Did you enjoy this article?
Subscribe to the FREE Digital Edition of Modern Pumping Today Magazine!