Tiny frequency inverter packs many functions

With a height of 100 to 126mm, a width of 55mm and a depth of 129mm, the CFW100 units are among the smallest frequency inverters currently available, while offering many applications that belie its size.

The mini frequency inverters with integrated micro-PLC are particularly suited to simple technical applications in the commercial and consumer sector, such as swimming pool pumps, motorised hospital beds, lift doors and fitness equipment, as well as small fans or mixing machines and special-purpose machines.

With its combination of extensive functionality and extremely small size, the CFW100 is easy to integrate into electrical cabinets and machines. This gives users an especially compact and cost-effective solution for controlling the speed of three-phase induction motors.

Along with the integrated micro-PLC, which supports IEC 61131-3 compatible programming, the CFW100 features an intuitive human-machine interface (HMI) with an LCD display. The plug-and-play design of the new frequency inverter makes installation and commissioning especially easy.

As part of the modular CFW100 platform architecture, WEG offers various plug-in base terminals, including USB and Modbus RTU communication interfaces, to facilitate easy access to major field bus systems such as Modbus, DeviceNet or CANopen.

Extension modules are also available to enable remote control of the device with an HMI/keypad or an infrared remote control. An optional flash memory card with integrated copy and paste functions allows parameter data sets to be saved and transferred conveniently.

A Bluetooth link can also be implemented with an accessory plug-in module. The low-maintenance device concept additionally includes an easily replaceable ventilation module for size B and C units.

The CFW100 operates three-phase motors from single-phase 200 to 240V supply (50/60Hz). It has an overload capacity of 150 percent of rated current for an interval of 60 seconds every 10 minutes. Voltage vector control (VVC) and V/f characteristic curve control are supported for driving three-phase induction motors.

The CFW100 has electronic thermal protection capability to prevent motor overheating and four digital inputs as standard, with possibility to increase by expansion plug-in module.

The enclosure protection rating is IP20, and the mini frequency inverter can be used at ambient temperatures up to 50°C without derating. Another bonus feature is the SuperDrive G2 setup software that can be downloaded for free from the WEG website.