WEG CFW300 V1.3X, Programming Manual

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About the CFW300
CFW300 | 3-1
3
3 ABOUT THE CFW300
The CFW300 frequency inverter is a high performance product which enables speed and torque control of three-
phase induction motors. This product provides the user with the options of vector (VVW) or scalar (V/f) control,
both programmable according to the application.
In the vector mode (VVW), the operation is optimized for the used motor, providing 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 those cases, it is possible to reduce the motor and inverter losses using the option "Quadratic V/f", which
results in energy saving. The V/f mode is used when more than a motor is activated by an inverter simultaneously
(multi-motor applications).
The main components of the CFW300 can be viewed in the block diagram of Figure 3.1 on page 3-1 , Figure
3.2 on page 3-2 and Figure 3.3 on page 3-3 . The mechanical project was designed to simplify the connection
and maintenance, as well as to ensure the safety of the product.
Analog input
(AI1)
Digital
output DO1
(RL1)
Analog output
(AO1)
Rsh
Filter RFI
T/L3
1
1
2
5
Digital inputs
(DI1 to DI4)
Sources for electronics and interfaces
between power and control
PC
Power
Pre
load
Motor
3~
U/T1
V/T2
W/T3
Inverter with IGBT
transistors
Power
supply
R/L1/L (-UD)
S/L2/N (+UD)
RS-485
DC Link
capacitor bank
Single-phase /
three-phase
rectifier
HMI
Control
board
CPU
16 bits
Flash memory
module
HMI (remote)
PE
PE
Interfaces
(RS-232, RS-485,
USB, CANopen,
DeviceNet,
Profibus DP or
Bluetooth)
3
Software WPS
Control
3
3
3
4
4
4
4
1
DC power supply connection available for specific models only.
2
Three-phase power supply connection available for specific models only.
3
Available as accessory.
4
Number of Inputs/Outputs depends on the I/O expansion accessory used.
5
Available as accessory only for models Single-phase.
Figure 3.1: Block diagram of CFW300 for frame size A 220 V