Chapter 6 - Parameter description [FU1]

Note: When FU2-40 [Control Mode] is set to ‘Sensorless’, the torque boost value is the rate per thousand of inverter rated voltage.

[Auto Torque Boost]: Inverter outputs high starting torque by automatic boosting according to the load.

Note: Auto torque boost is only available for the 1st motor. Manual torque boost must be used for the 2nd motor.

Note: The auto torque boost value is added to the manual torque boost value.

Note: Auto torque boost is available only when FU2-40 [Control Mode] is set to ‘V/F’.

Note: Conduct Auto tuning in FU2-41 [Auto tuning] to use Auto torque boost effectively.

Output Voltage

100%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Forward and Reverse direction

 

 

 

 

 

 

(Set the same value for FU1-27

 

 

 

 

 

 

 

Manual

 

 

 

 

and FU1-28)

 

 

 

 

 

 

 

 

Boost

 

 

 

 

 

Output

Value

 

 

 

 

 

 

 

 

Frequency

 

 

 

 

 

 

 

 

 

 

Freq. Base

[Constant Torque Loads: Conveyor, Moving Equip. etc.]

Output Voltage

100%

 

 

Forward Direction - Motoring

 

(Set FU1-27 to a value)

 

Reverse Direction - Regenerating

Manual

(Set FU1-28 to ‘0’)

Boost

Output

Value

Frequency

 

 

FU1-21

[Ascending and Descending Loads: Parking, Hoist etc.]

Related Functions: FU1-29 [Volts/Hz Pattern] FU2-40 [Control Mode selection]

FU1-29: Volts/Hz Pattern

FU1► V/F pattern

 

29

 

0

 

29

Linear

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Factory Default:

Linear

 

 

0

 

 

 

 

 

 

 

 

 

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

Freq. Base

[V/F Pattern: ‘Linear’]

6-15

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Image 99
HP 30 30 manual FU1-29 Volts/Hz Pattern, FU1 V/F pattern Linear