WEG CFW501 V1.8X, Programming Manual, Page: 73 / 192

Available Motor Control Types
CFW501 | 8-1
8
8 AVAILABLE MOTOR CONTROL TYPES
The inverter feeds the motor with variable voltage, current and frequency, providing control of the motor speed.
The values applied to the motor follow a control strategy, which depends on the selected type of motor control
and on the inverter parameter settings.
The selection of the proper control type for the application depends on the static and dynamic requirements of
torque and speed of the driven load, that is, the control type is directly connected to the required performance.
Besides, the setting of the parameters involved is essential to reach such performance.
The CFW501 is equipped with two control modes for the three-phase induction motor, that are:
„
V/f Scalar Control: for basic applications without output speed control.
„
V VW Sensorless Vector Control: for applications that need high performance in the control of the output
speed.
In chapter 9 V/f SCALAR CONTROL on page 9-1 and chapter 10 VVW VECTOR CONTROL on page 10-1 ,
each of these kinds of control, related parameters and directions regarding the use of each of these modes are
described in details.
P0202 – Control Type
Adjustable
Range:
0 to 2 = V/f
3 = V VW
Factory
Setting:
0
Properties: cfg
Access groups
via HMI:
STARTUP
Description:
This parameter selects the kind of three-phase induction motor control used.
NOTE!
When the V V W mode is programmed via HMI (P0202 = 3), the STARTUP menu is activated
automatically, forcing an oriented start-up for vector mode setting. See
chapter 10.2 START-UP IN
V VW MODE on page 10-8 .
P0139 – Output Current Filter
Adjustable
Range:
0 to 9999 ms
Factory
Setting:
50 ms
Properties: V/f, V VW
Description:
Time constant of the filter for the total and active output current. You must consider a filter response time equal
to three times the time constant set in P0139 (50 ms).