VFD-V Series
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
5-14
When setting the V/F curve, please follow this hierarchy for frequency:
01-01≥01-03≥01-05≥01-07. There is no hierarchy for the voltage setting, but a high
voltage at low output frequencies may cause motor failure. At low frequencies, always
use the lowest voltage necessary for the application.
01-09 Startup Frequency
a
Factory setting 0.50
Settings 0.00~400.00Hz
The Start-up Frequency is the initial frequency output upon a RUN command. If the
startup frequency setting is greater than the Maximum Output Frequency (Pr. 01-00), the
drive will default to Pr. 01-00 as the start point.
When the Pr. 07-12 (Speed-Tracing Function) is enabled, Pr. 01-09 (Start-up frequency)
is disabled.
01-10 Upper Bound Frequency
a
Factory setting 100.0
Settings 0.0~110.0%
01-11 Lower Bound Frequency
a
Factory setting 0.0
Settings 0.0~100.0%
These parameters set the upper and lower limits of the output frequency. If the
command frequency is lower than the Lower Bound frequency, the motor will be
operating at ZERO speed; if the command frequency is greater than the Upper Bound
frequency, the motor will then operate at the Upper Bound frequency.
01-05
01-03
01-01
01-06
01-04
01-02
01-00
01-07
01-08
01-09
01-11 01-10
1st Voltage
2nd Voltage
3rd Voltage
4th Voltage
Lower Bound Frequency
Upper Bound Frequency
Frequency output
ranges limitation
Regular V/F Curve
Special V/F Curve
Voltage
4th Freq.
Startup Freq.3rd Freq.
2nd Freq.
1st Freq.
Maximum Operation
Frequency
V/F Curve
This function is disabled if the Lower Bound > the Upper Bound.
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