WEG's New CFW08 'Wash' Inverter Offers Greater Protection Against Water & Dust

The CFW-08 Wash is based on the well proven technology of WEG’s current CFW-08 product line. As such, it benefits from WEG’s unique Space Vector Modulation for optimised motor control and quiet operation. The ‘Wash’ also offers users the performance benefits of 32- bit RISC microprocessor controlled PWM output, and the flexibility and convenience of adjustable switching frequencies of 2.5 / 5 / 10 / 15 kHz.

Designed to cater for single- phase applications from 0.75kW to 3.7kW and three- phase applications to 15kW, the CFW-08 Wash is a compact range of drives integrating a wide of functions that allow easy integration into most applications. The CFW-08 operates in two control modes, V/F and Sensorless Vector, and packs in a host of special features for the user, including linear and “S” acceleration and deceleration ramps, local remote control, Dynamic braking, torque boost, motor slip compensation, JOG, ride through, PID regulator, maximum and minimum adjustable frequency limits, speeds, adjustable V/F profile, preset speeds, two skip frequencies, flying start, and built-in DeviceNet, Modbus RTU and CanOpen Fieldbus protocols, with Profibus DP as an option.

The standard operating mode of the CFW-08 Wash, V/F, is suited to variable torque loads, and includes a selectable energy saving feature, which reduces motor losses when operating at lower speeds. This control mode also permits the drives to operate in multi-motor applications where more than one motor is supplied by a drive.

The alternative operating mode, Sensorless Vector Control, allows the drive to precisely control the speed and torque of a motor, enabling the CFWO8 wash to be used on demanding duties such, as conveyors and extruders, for example.

Extending the operating ability of the CFW08 Wash range is a comprehensive range of options that provide maximum application flexibility. These include 'Superdrive', WEG's own software program for drive control direct from a PC or PLC.

The CFW-08 Wash has been designed with all aspects of safety and electromagnetic compatibility (EMC) in mind. The drive has built in EMC filters, which can easily be disassembled from the product for cleaning and maintenance. It also integrates

several protective features, such as: overcurrent/output short-circuit, output ground fault, DC link under/overvoltage, inverter overtemperature, motor/inverter overload (IxT), external fault, programming error, self-tuning error and defective inverter.