This function allows user parameterisation of the conventional (volts/hertz) fluxing strategy of the Drive. This is achieved through three flexible Volts-
to-frequency templates. Starting torque performance can also be tailored through the Fixed Boost, Acceleration Boost and Auto Boost
parameters.
Parameter Name
No.
VHz Shape
0422
Type of volts to frequency template to flux the motor. The choices for this parameter are:
Enumerated Value : VHz Shape
0 : LINEAR LAW
1 : FAN LAW
2 : USER DEFINED This gives a user defined flux characteristic up to the Base Frequency.
3 : APPLICATION DEFINED This gives a user the ability to set up and apply fluxing law from the application layer.
V/F SHAPE
OUTPUT VOLTS
100%
LINEAR
f B
= BASE FREQUENCY
Path
Setup::Motor Control::Control and Type
Parameters::Motor Control::Fluxing VHz
This gives a constant flux characteristic up to the Base Frequency (see Motor Nameplate function).
This gives a quadratic flux characteristic up to the Base Frequency. This matches the load requirement for fan