Configuration Parameters - P200 - WEG CFW08 Vector inverter User Manual

6.3.3 Configuration Parameters - P200 ... P398
Parameter
(1)
P202
Type of Control
Output Voltage
P142
0
(a) Linear V/F
(1) This parameter can be changed only with the inverter disabled (motor stopped).
Range
[factory Setting]
Unit Description / Notes
Defines the inverter control mode. Item 4.3 gives some guidelines
0...2
relating to the selection of control type.
[ 0 - V/F linear ]
-
As shown in table above, there are 2 V/F control modes:
- Linear V/F control: this control mode ensures a flux in the motor
- Quadratic V/F control: in this control mode the flux in the motor air
Main application fields for this type of control are: centrifugal pumps,
fans, multimotor drivings.
P136=0
Output
Frequency
P145
Figure 6.15 -V/F control modes (scalar)
DETAILED PARAMETER DESCRIPTION
P202
0 Linear V/F Control (scalar)
1 Quadratic V/F Control (scalar)
2
air gap approximately constant from around 3Hz up to the field
weakening (defined by the parameters P142 and P145).
Thus in this speed range, an approximately constant torque
capacity is obtained. This control mode is recommended for
belt conveyors, extruding machines, etc.
gap is proportional to the output frequency up to the field weakening
point (defined at P142 and P145). Thus the torque capacity is
a function of the quadratic speed. The main advantage
of this type of control is the energy saving capability with variable
torque loads, due to the reduction of the motor losses
(mainly due to motor iron losses and magnetic losses).
Output Voltage
P142
0
Type of Control
Vector Control
P136=0
P145
(b) Quadratic V/F
Output
Frequency
81