Variable Speed AC Drives ERCFW11 Series

Its performance is excellent, providing increased productivity and an improvement in the quality of the process in which it is used.

The ERCFW-11 frequency inverter can be used in both simple and sophisticated applications, due to its broad range of functions and easy configuration, installation and operation.

The ERCFW-11, through its Vectrue Inverter™ technology, presents excellent static and dynamic performance, precise torque and speed control, dynamic response, positioning precision, and high overload capacity.

The ERCFW-11 was also developed for applications where the decisive factor is safety, through several built-in protections and alarms as well as through the safety stop function in accordance with EN 954-1, category III.

Innovative and simple

The ERCFW-11 presents many innovations that are helpful and beneficial to customers, mainly due to the simplicity of its installation and operation. The ERCFW-11 was developed based on Plug-and-Play philosophy (connect and use) allowing simple and fast installation of the inverter and its accessories.

The HMI (Human-Machine Interface) has a navigation and programming system similar to mobile phones, with soft-key buttons. It is possible to access the parameters sequentially or through groups of parameters.

The HMI also makes the Oriented Start-up function available, guiding the user through the necessary programming.

Flexibility

The ERCFW-11 adapts itself to the customer’s needs through a broad range of accessories, which are easily installed. Besides this, the standard product comes with the SoftPLC function that attributes PLC functions to the inverter, which allows the customer to create his/her own applications (user programs) through the WLP software (programming in LADDER).

Technology – Patents

Vectrue Technology™

Frequency Inverter Control Technology

• Linear and adjustable V/f scalar, VVW (Voltage Vector) and vector controls are  available in the same product.

• Two (2) types of vector control: sensorless and with encoder (it requires the encoder interface accessory).

• Sensorless vector control permits high torque and quick response, even at low speeds and at startup.

• Permanent Magnet (PM) Motor control function standard

• The self-tuning function automatically sets the vector control or VVW to the motor and load used.

• Through the adjustable V/f control, it is possible, for example, to adjust a quadratic V/f curve, providing energy savings for quadratic torque loads (e.g.: centrifugal pumps and fans).

Optimal Flux™

Technology for Motors Driven by Frequenct Inverters in Applications with Constant Torque Loads 

• Rated torque at low speeds eliminating the need for independent ventilation or motor overdimensioning.

• Space saving and cost reduction of the application. Improved performance of the package inverter and motor (an exclusive Eurotherm solution).

Optimal Braking™

Frequency Inverter Braking Technology

For applications requiring short stopping times and/or stops under high inertial loading, conventional inverters use Dynamic (rheostatic) Braking, where the load’s kinetic energy is regenerated to the inverter DC link and the excess is dissipated in the form of heat in a braking resistor that is interconnected with the power circuit.

The ERCFW-11 inverters have a built-in Optimal Braking™ function, for the vector control mode, enabling an optimal braking, capable of responding to many applications that could only be solved by dynamic braking before.

This technological innovation permits operations with high dynamic performance, with braking torques 5 times greater than regular DC braking torques, besides the great advantage of eliminating the use of the braking resistor.

Software download

The ERCFW11 can be commissioned and configured using free downloadable software.