A drive for all reasons

The CFW-09 inverter is essentially one drive for all applications integrating selectable, V/F, sensorless vector, closed-loop vector and fieldbus operation in a single product.

The CFW-09 inverter is essentially one drive for all applications integrating selectable, V/F, sensorless vector, closed-loop vector and fieldbus operation in a single product.

The CFW-09 offers high performance across the power range from 1.5 to 700kW, courtesy of its powerful 32bit RISC microprocessor.

The level of control provided by this unit ensures the fastest dynamic response and absolute control of speed and torque in the most demanding of applications such as winding/rewinding, mixing, dosing and forming.

In addition to its unique Vectrue Technology, the CFW09 architecture also includes a novel "optimal braking" feature for applications that require reduced braking times or the stopping of high inertia loads.

Traditionally, conventional variable speed drives (VSDs) have relied on dynamic braking resistors to dissipate excessive heat regenerated in their DC links under braking.

In contrast, optimal braking provides sufficient braking performance to eliminate the need for the resistor in the majority of applications.

This results not only in cost savings but also enables highly dynamic performance drive systems with braking torques of about five times that of typical DC braking systems.

The CFW-09 is equally at home in stand-alone drive applications or as an intelligent "node" in high-speed factory communication networks.

To assist easy network integration, the drive is supported by a range of optional plug-in Profibus DP, DeviceNet and Modbus RTU fieldbus modules.

Where more simplified communication is required RS232 serial interface kits are provided, and optional I/O expansion boards include an RS485 serial interface, not to mention isolated analogue inputs/outputs, 14bit A/Ds and D/As, encoder input and output and digital I/O.

Complementing the operation of the CFW-09 is WEG's optional Superdrive software, for on/off line programming with a PC, and a detachable smart keypad.

The keypad is language selectable and offers users complete flexibility, providing programming, intelligent operator interface facilities, fast oriented startup and copy functions - for program/parameter transfer from drive to drive, in a single unit.

The intelligent keypad is basically designed to make the task of the OEM and user faster, easier and more transparent.

It is assisted in this respect by the CFW09's self-tuning feature, which automatically matches the drive to the motor and load, relieving the user of the task of entering a motor map.

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