C-78 Parameter Reference
AC30 series Variable Speed Drive
Fluxing VHz
Parameters::Motor Control::Fluxing VHz
Designed for VOLTS/Hz motor Control Mode.
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.
VHz Shape
0422
Setup::Motor Control::Control and Type
Parameters::Motor Control::Fluxing VHz
0
0:LINEAR LAW
1:FAN LAW
2:USER DEFINED
3:APPLICATION DEFINED
STOPPED
Type of volts to frequency template to flux the motor. The choices for this parameter are:
Enumerated Value : VHz Shape
0 : LINEAR LAW This gives a constant flux characteristic up to the Base Frequency (see Motor Nameplate function).
1 : FAN LAW This gives a quadratic flux characteristic up to the Base Frequency. This matches the load requirement for fan
and most pump applications
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
LINEAR
FREQUENCY
= BASE FREQUENCY
100%
CONSTANT
POWER RANGE
(field weakening)
OUTPUT VOLTS
f
B
f
B
QUADRATIC LAW
CONSTANT
TORQUE
RANGE
Fixed Boost
0447
Same as PNO 422
0.0
0.0 to 25.0
%
ALWAYS
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