General Instructions; About The Manual; About The Cfw700 - WEG CFW700 Serie Manual Del Usuario

2. GENERAL INSTRUCTIONS

2.1 ABOUT THE MANUAL

The purpose of this manual is to provide the basic information needed to install, start-up in
the V/f control mode (scalar), and troubleshoot the most common problems of the CFW700
frequency inverter series.
ATTENTION!
The operation of this equipment requires installation instructions and detailed operation
provided in the user manual, programming manual and communication manuals. The
user manual and the parameters quick reference are supplied in a hard copy together
with the inverter. The user guides are also provided in a hard copy along with the
accessories. The other manuals are included on the CD supplied with the inverter or
can be downloaded from the WEG website at - www.weg.net. The CD should always
be kept with the equipment. A printed copy of the files available on the CD can be
ordered through your local WEG representative.
Some of the figures and tables are available in the appendixes. The Appendix A shows the
figures and the Appendix B shows the technical specifications. The information is available in
three languages.
Please refer to the following technical manuals for further information:
CFW700 Programming and Maintenance Manual;
DeviceNet Communication Manual;
CANopen Communication Manual;
Profibus DP Communication Manual;
Modbus Communication Manual.

2.2 ABOUT THE CFW700

The CFW-700 frequency inverter is a high performance product designed for speed and torque
control of threephase induction motors. The main characteristic of this product is the "Vectrue"
technology, which has the following advantages:
Scalar control (V/f), V V W, or vector control programmable in the same product;
The vector control may be programmed as "sensorless" (which means standard motors
without using encoders) or as "vector control" with the use of an encoder;
The "sensorless" control allows high torque and fast response, even in very low speeds or at
the starting;
The "vector with encoder" control allows high speed precision for the whole speed range
(even with a standstill motor);
"Optimal Braking" function for the vector control, allowing the controlled braking of the motor
and avoiding external braking resistor for some applications;
"Self-Tuning" feature for vector control. It allows the automatic adjustment of the regulators
and control parameters from the identification (also automatic) of the motor parameters and
load.
The main components of the CFW700 can be viewed in figure A.1.
- English -
General Instructions
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