WEG CFW300 User Manual - 2 General Information
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General Information
2 GENERAL INFORMATION
2.1 ABOUT THE MANUAL
This manual contains information for the proper installation and operation of the inverter,
commissioning, main technical features and how to identify the most usual problems of the
different models of inverters of the CFW300 line.
ATTENTION!
The operation of this equipment requires detailed installation and operation
instructions provided in the quick installation guide, user's manual, programming
manual and communication manuals. The guides are provided in print with their
respective accessory, or can be obtained at WEG website - www.weg.net. A
printed copy of the files can be requested at your local WEG dealer.
NOTE!
It is not the intention of this manual to present all the possibilities for the application
of the CFW300, as well as WEG cannot take any liability for the use of the CFW300
which is not based on this manual.
Part of the figures and tables are available in the annexes, which are divided into
for figures and
APPENDIX B - TECHNICAL SPECIFICATIONS on
for technical specifications.
For further information, refer to the programming manual.
2.2 ABOUT THE CFW300
The CFW300 frequency inverter is a high-performance product which allows speed and torque
control of three-phase induction motors. This product provides the user with the options of
vector (V V W) or scalar (V/f) control, both programmable according to the application.
In the vector mode (V V W), the operation is optimized for the motor in use, obtaining a better
performance in terms of speed regulation.
The scalar mode (V/f) is recommended for simpler applications, such as the activation of most
pumps and fans. In such cases it is possible to reduce the losses in the motor and the inverter
using the "V/f Quadratic", which results in energy savings. The V/f mode is used when more
than a motor is activated by an inverter simultaneously (multimotor applications).
The frequency inverter CFW300 also has functions of PLC (Programmable Logic Controller)
by means of the SoftPLC (integrated) feature. For further details regarding the programming of
those functions, refer to the SoftPLC user's manual of the CFW300.
The main components of the CFW300 can be viewed in the blocks diagrams of
, for frame size A 220 V,
for frame size A 110 V and
for frame size B 220 V.