Cleveland Range inverter - Manual (Page 50)

Chapter 4 - Parameter Description [FU1]
44
FU1-29: Volts/Hz Pattern
This is the pattern of voltage/frequency ratio.
Select the proper V/F pattern according to the
load. The motor torque is dependent on this V/F
pattern.
[Linear] pattern is used where constant torque is
required. This pattern maintains a linear
volts/frequency ratio from zero to base frequency.
This pattern is appropriate for constant torque
applications.
[Square] pattern is used where variable torque is
required. This pattern maintains squared
volts/hertz ratio. This pattern is appropriate for
fans, pumps, etc.
[User V/F] pattern is used for special applications.
Users can adjust the volts/frequency ratio
according to the application. This is accomplished
by setting the voltage and frequency, respectively,
at four points between starting frequency and
base frequency. The four points of voltage and
frequency are set in FU1-30 through FU1-37.
[V/F Pattern: ‘Linear’]
[V/F Pattern: ‘Square’]
[V/F Pattern: ‘User V/F’]
FU1-30 ~ FU1-37: User V/F Frequency and Voltage
Output Voltage
Output
Frequency
Base Freq.
100%
Output Voltage
Output
Frequency
Base Freq.
100%
Output Voltage
Output
Frequency
Base Freq.
100%
FU1-31
FU1-30
FU1-34
FU1-33
FU1-35
FU1-37
FU1-36
FU1-32