KE300A Inverter Parameter Description
110
1
S-curve ACC/DEC A
2
S-curve ACC/DEC B
0: Linear ACC/DEC
The output frequency increases or decreases according to the straight line. KE300A series inverter has 4
kinds of ACC/DEC time, which can be set by P4-00 ~ P4-06.
1: S-curve ACC/DEC A
The output frequency increases or decreases according to S-curve. S-curve is suitable for applications
which require start & stop smoothly, such as elevator and conveyor belt.
2: S curve ACC/DEC B
In the S-curve ACC/DEC B, the motor rated frequency f
b
is always the inflection point of S curve, showed
as figure 6-11. Suitable for the applications that the high speed area above rated frequency needs fast
ACC/DEC.
When setting frequency is above rated frequency, ACC/DEC time is:
f is setting frequency, f
b
is motor rated frequency, T is the ACC time from 0Hz to rated frequency.
P6-08
Time of S curve's start part
Factory default
30.0%
Setting range
0.0% ~ (100.0%-P6-09)
P6-09
Time of S curve's end part
Factory default
30.0%
Setting range
0.0% ~ (100.0%-P6-08)
S curve start time is shown in Figure 6-10 as t
1
set by P6-08, which is the stage when the slope of output
frequency rises gradually.
S curve rise time is shown in Figure 6-10 as the time between t
1
and t
2
, which is the stage when the slope
of output frequency maintains phase.
S curve end time is shown in Figure 6-10 as t
2
set by P6-09, which is the stage when the slope of output
frequency decreases to zero
t2
t1
Setting frequency (f)
t2
t1
Time (t)
Output frequency (Hz)
Figure 6-10 S curve ACC/DEC diagram
