Chapter 4 - Parameter Description [FU1]

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.

Output Voltage

100%

Output

Frequency

Base Freq.

[V/F Pattern: ‘Linear’]

Output Voltage

100%

Output

Frequency

Base Freq.

[V/F Pattern: ‘Square’]

Output Voltage

100%

 

 

FU1-37

 

 

FU1-35

 

 

FU1-33

 

 

FU1-31

 

Output

 

 

FU1-30

FU1-36

Frequency

 

FU1-32

FU1-34

Base Freq.

 

[V/F Pattern: ‘User V/F’]

 

FU1-30 ~ FU1-37: User V/F Frequency and Voltage

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Cleveland Range inverter Parameter Description FU1 FU1-29 Volts/Hz Pattern, FU1-30 ~ FU1-37 User V/F Frequency and Voltage

inverter specifications

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