BENSHAW RSi SG Series, Instruction Manual

Page: 103 / 218

Chapter 6 - Parameter Description [FUN]
6-15
FUN-33: Frequency Limit Selection
FUN-34: Low Limit Frequency
FUN-35: High Limit Frequency
When FUN-33 is set to Yes, it allows the user to set
high and low limits for the drive. The drive will
operate at the upper or the lower limit when the
frequency reference is outside the frequency limit
range.
Freq. limit: Yes
Note: If the frequency reference is below the
frequency low limit, the drive will operate at the low
limit.
FUN-40: 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 for constant torque loads. This
pattern maintains a linear volts/frequency ratio from
zero to base frequency. This pattern is appropriate for
applications that require high starting torque. The
performance will be improved with the help of AFN-
67~69 [Torque boost].
[Square]
pattern is used for variable torque loads such
as fan and pumps. This pattern maintains a “squared”
volts/hertz ratio and will increase energy savings in
variable torque applications.
[User V/F]
pattern is used for special applications.
Users can adjust the volts/frequency ratio according to
their application. This is accomplished by setting the
frequency and voltage at four points between starting
frequency and base frequency. The four points of
voltage and frequency are set in FUN-41 through FUN-
48.
V/F Pattern: Linear
V/F Pattern: Square
FUN ► Freq limit
33 No
Factory Default: No
FUN ► Lim Lo Freq
34 0.50 Hz
Factory Default:
0.50 Hz
FUN ► Lim Hi Freq
35 60.00 Hz
Factory Default:
60.00 Hz
FUN ► V/F pattern
40 Linear
Factory Default:
Linear
Output Voltage
Output
Frequency
Freq.
100%
Output Voltage
Output
Frequenc
y
Freq.
100%
Output Frequency
Freq. Max
Freq setting
FUN-3 5
FUN-3 4
Reference Frequency
Output Frequency
10V, 20mA