Section VI. Function Parameter Description
0
upper limit frequency
lower limit frequency
maximum frequency
frequency set signal100％
F18: S curve start time at the acceleration step factory setting: 0.0%
F19: S curve stop time at the acceleration step factory setting: 0.0%
F20: S curve start time at the deceleration step factory setting: 0.0%
F21: S curve stop time at the deceleration step factory setting: 0.0%
setting frequency 1
running time
setting frequency 2
T1
T2
S curve acceleration/deceleration
1
1
2
2
3
3
1. Slope of output frequency is enhanced from 0 to maximum level.
2. Slope of output frequency at the constant level.
3. Slope of output frequency is reduced from maximum level to 0.
If setting S curve acceleration/deceleration, the acceleration/deceleration
time is calculated as:
Acceleration time=Selected acceleration time+〔S feature time at the
beginning of acceleration + S feature time at the end of acceleration〕×2
That is: Acceleration timeT1=F09+〔(F09×F18)+(F09×F19)〕×2
Deceleration time=Selected deceleration time+〔S feature time at the
beginning of deceleration + S feature time at the end of deceleration〕×2
That is: Deceleration timeT2=F10+〔(F10×F20)+(F10×F21)〕×2
F22: Minimum running frequency factory setting: 0.00/0.0Hz
Inverter stops when the set frequency is lower than the minimum running
frequency, that is: set frequency is 0.0Hz when set frequency is lower than
the minimum running frequency.
Section VI. Function Parameter Description
“Minimum running frequency” is in priority rather than “Lower frequency”.
“Lower frequency” is in priority only with the set minimum running frequency
0Hz.
Minimum frequency<lower frequency
Time
actual frequency
Time Time
Time
lower limit
frequency
set frequency
Minimum
frequency
lower limit
frequency
lower limit
frequency
lower limit
frequency
actual frequency
set frequency
Minimum frequency>lower frequency
Minimum
frequency
Minimum
frequency
Minimum
frequency
F23: DC braking current factory setting: 100%
This parameter set the percentage of DC braking current at DC braking. It is
based on the rated current (inverter’s rated current percentage). When
setting it, do increase the value gradually until it provides enough braking
torque.
F24: DC braking time when starting factory setting: 0.0s
Standing time of DC braking voltage when starting.
F25: DC braking time when stopping factory setting: 0.0s
Standing time of DC braking voltage when stopping.
F26: Braking start up frequency factory setting: 0.00/.00Hz
When the frequency converter decelerates to this frequency, it stops the
output of PWM waves, and then starts to output the D.C. brake wave.
braking
frequency
time
time
stop braking (RUN→STOP)
STOP
OFF
stop braking time
RUN
ON
setting
frequency
output
frequency
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