WEG CFW700 User Manual - 2 General Instructions
CFW700 | 3
General Instructions
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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's manual, programming manual and communication manuals.
The user's 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
shows the figures and the
shows the technical specifications. The information is available
in three languages.
Please refer to the following technical manuals for further information:
CFW700 Programming Manual.
DeviceNet Communication Manual.
CANopen Communication Manual.
Profibus DP Communication Manual.
Modbus Communication Manual.
2.2 ABOUT THE CFW700
The CFW700 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).