CMC 30 HP30, Installation And Operation Instruction Manual

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Chapter 6 - Parameter description [FU1]
6-15
☞ 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 1
st
motor.
Manual torque boost must be used for the 2
nd
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.
[Constant Torque Loads: Conveyor, Moving Equip. etc.]
[Ascending and Descending Loads: Parking, Hoist etc.]
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’]
Output Voltage
Output
Frequency
Freq. Base
100%
Manual
Boost
Value
Forward and Reverse direction
(Set the same value for FU1-27
and FU1-28)
Output Voltage
Output
Frequency
FU1-21
100%
Manual
Boost
Value
Forward Direction - Motoring
(Set FU1-27 to a value)
Reverse Direction - Regenerating
(Set FU1-28 to ‘0’)
FU1
►
V/F pattern
29 Linear
0 29
Factory Default:
Linear
0
Related Functions: FU1-29 [Volts/Hz Pattern]
FU2-40 [Control Mode selection]
Output Voltage
Output
Frequency
Freq. Base
100%