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CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter Description / Notes
Output Voltage
P136 = 0
P142
0
P145
Output
Frequency
a) linear V/F
recommended for belt conveyors, extruding
machines, etc.
- Quadratic V/F control: in this control mode the flux in
the motor air 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).
Example of a application: centrifugal pumps, fans,
multimotor drivings.
Figure 6.15 a) b) - V/F Control modes (scalar)
Output Voltage
P136 = 0
P142
0
P145
Output
Frequency
b) Quadratic V/F
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