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6 - Parameter Descriptions
user can adjust the Volt/Frequency ratio according to V/F pattern of specialized
motors and load characteristics.
F31-F38: User V/F Frequency and Voltage
Range: Voltage: 0-100% (Default:25,50,75100), Frequency: 0-400Hz (Default:
15,30,45,60)
Description: These functions are available only when ‘User V/F’ is selected in F30 [V/F
pattern]. Users can make the custom V/F pattern by setting four points between
F23 [Starting Frequency] and F22 [Base Frequency]. The four points of voltage
and hertz are set in percent of H70 – [Motor rated voltage]. It cannot be set above
F21 – [Max frequency].
The values of the lower-numbered parameters cannot be set above those of
higher-numbered.
z Note: When the 'User V/F' is selected, the torque boost of of F27 ~ F29 (page
74-75) is ignored.
Freq.
Voltage
Start
freq.
F31 F33 F35 F37
Base
freq.
F32
F34
F36
F38
100%
Linear
V/F
Output Frequency
Time
Acc. Pattern Dec. Pattern
Max. freq.
[V/F Pattern: 'Linear']
Output freq.
Max freq.
(Hz)
S starting
Time( sec
Max freq/2
S ending
S ending
S starting
Linear
Linear
Delta freq.
[V/F Pattern: 'Square']
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