WEG CFW08 Vector inverter User Manual

18
GENERAL INFORMATION
2.3 ABOUT THE CFW-08
The CFW-08 is a high performance Variable Frequency Drive that permits
the control of speed and torque of a three-phase AC induction motor. Two
types of control are available in the same product:
Programmable scalar (Volts/Hz) control;
Sensorless Vector Control (VVC: Voltage Vector Control).
In the vector control mode, the motor performance is optimized relating to
torque and speed regulation.
The "Self-Tuning" function, available in vector control, permits the automatic
setting of the inverter parameter from the identification (also automatic) of
the parameters of the motor connected at the inverter output.
The V/F (scalar) mode is recommended for more simple applications
such as pump and fan drives. In these cases one can reduce the motor
and inverter losses by using the "Quadratic V/F" option, that results in
energy saving.
The V/F mode is also used when more than one motor should be driven
simultaneously by one inverter (multimotor application).
There are two CFW-08 versions:
Standard: it has 4 digital inputs (DIs), 1 analog input (AI) and 1 relay
output.
CFW-08 Plus: compared to the standard version it has one additional
analog input and one additional relay output. It has also an analog
output (AO).
For power ratings and further technical information, see Chaper 9.

WEG CFW08 Vector inverter Specifications

General

Frequency Range	0 to 300 Hz
Overload Capacity	150% for 60 seconds
Protection Degree	IP20
Communication	RS485, Modbus RTU
Voltage	200 V to 240 V
Control Mode	Vector Control
Ambient Temperature	-10°C to 50°C
Input Frequency	50 Hz / 60 Hz
Output Voltage	0 to input voltage
Braking	Dynamic braking resistor (optional)
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Operating Temperature	-10°C to 50°C
Cooling Method	Forced air cooling (fan)
Humidity	5% to 90% non-condensing