57
Note
Note
Note
Note ： (1) In order to achieve better performance s
,
the ratio of carrierfrequency to the maximum running frequency of the
inverter should be less than 36 .
(2) When the carrier frequency is
low,
the current display value may has error.
0
0
0
0 ： Linear
Linear
Linear
Linear Acc/Dec
Acc/Dec
Acc/Dec
Acc/Dec mode
mode
mode
mode
Output f requency increases or decreases according to a constant rate ,as shown in Fig. 4-4 .
1
1
1
1 ： S
S
S
S ramp
ramp
ramp
ramp Acc/Dec
Acc/Dec
Acc/Dec
Acc/Dec mode
mode
mode
mode
Output frequency increases o r decreases according to a S-shape curve, as shown in Fig.4-5.
Fig.
Fig.
Fig.
Fig. 4-4
4-4
4-4
4-4 Linear
Linear
Linear
Linear Acc/Dec
Acc/Dec
Acc/Dec
Acc/Dec
Fig.
Fig.
Fig.
Fig. 4-5
4-5
4-5
4-5 S
S
S
S -shape
-shape
-shape
-shape curve
curve
curve
curve
P0.14 and P0.15 are only active when Acc/Dcc mode is S ramp Acc/Eec mode （ P0.13 ＝ 1 ） and P0.14+P0.15 <
<
<
< 90 ％ .
Low speed
time of S ramp
is
shown
in
Fig.4-5 as
③
,
where
the
chang ing
rate
of output
frequency
increase
s
for
0.
Linear time of S ramp is shown in Fig.4-5 as ②
,
where the changing rate of output frequency is constant.
High speed time of S ramp is shown in Fig.4-5 as ①
,
where the changing rate of output frequency increases from 0. High
speed time ＝ 100 ％－ P0.14 － P0.15
.
N
N
N
N ote
ote
ote
ote ： S ramp Acc/Dec mode is suitable for the start/stop of elevator, conveying belt, conveying load and so on .
This function defines Acc/Dec time unit
0
0
0
0 ： second
second
second
second
1
1
1
1 ： minute
minute
minute
minute
Note
Note
Note
Note ： (1) This function is active for all the process of Acc/Dec except jog running.
(2) Select second as time unit is recomm ended .
Acc time is the time taken for the motor to accelerate from
0
Hz to upper limit of frequency, as t
1
in Fig.4-6 ; Dec time is the
time taken for the motor to decelerate from upper limit of frequency to
0
Hz, as t
2
in Fig.4-6.
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