Lifasa SV030iH-2U, Manual, Page: 47 / 98

Chapter 5 - Parameter Description (Function Group)
45
n
Note: If maximum frequency is decrease, all frequency
parameters are adjusted to the maximum frequency set
point.
FUN 07: Hold Time
FUN
¢º
Hold time
07 0.0sec
Setting Range: 0 to 10 sec
Factory Default: 0.0 sec
This function selects the amount of time to hold the
starting frequency before accelerating.
FUN 08: Volts/Hz Pattern
FUN
¢º
V/F pattern
08 Linear
Setting Range: Linear, 2.0, User, Auto
Factory Default: Linear
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. It maintains a linear volts/hertz ratio from
zero to base frequency. This pattern is appropriate
for conveyer, parking facility etc.
[2.0] pattern is used where variable torque is
required. It maintains squared and cube powered
ratio characteristics for the volts/hertz ratio. This
pattern is appropriate for fans, pumps etc.
[User] pattern is used for special applications. Users
can adjust the volts/hertz ratio according to the
application. This is accomplished by setting the
voltage and frequency, respectively, at two (2) points
between starting frequency and base frequency. The
two (2) points of voltage and frequency are set in
Output voltage
Rated
Voltage
Output
Frequency
FUN 06 FUN 05
FUN 04
Output Frequency
Time
Hold Time
FUN 06
Output Voltage
Output
Frequency
Freq. Base
100%
Output Voltage
Output
Frequency
Freq. Base
100%