About The Cfw-11 - WEG CFW-11 Series User Manual

General Information

2.3 ABOUT THE CFW-11

The CFW-11 is a high performance Variable Frequency Drive that makes it possible the control of speed and
torque of three-phase AC induction motors. The central characteristic of this product is the "Vectrue" technology,
which presents the following advantages:
(V/f), V V W or vector control programmable in the same product;
The vector control can be programmed as "sensorless" (which means standard motors, without the need of
encoder) or vector control with motor encoder;
The "sensorless" vector control allows high torque and fast response, even at very slow speeds or during
starting;
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The vector control with encoder allows very high speed accuracy and control for the entire speed range
(speed control down to 0 rpm);
The "Optimal Braking" function for the vector control allows a controlled motor braking, eliminating in some
applications the braking resistor;
The vector control "Self-Tuning" function allows the automatic setting of the regulators and control parameters,
from the identification (also automatic) of the motor and load parameters.
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