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4.7 Setting of acceleration/deceleration time and
acceleration/deceleration pattern
Purpose
Motor acceleration/deceleration time
setting
Starting frequency
Set acceleration/deceleration pattern
suitable for application
4.7.1
Setting of the acceleration and deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45, Pr. 147)
Used to set motor acceleration/deceleration time.
Set a larger value for a slower speed increase/decrease or a smaller value for a faster speed increase/decrease.
For the acceleration time at automatic restart after instantaneous power failure, refer to Pr. 611 Acceleration time at
a restart (page 154).
Parameter
Name
Number
7
Acceleration time
8
Deceleration time
Acceleration/
deceleration
20
*1
reference frequency
Acceleration/
deceleration time
21
*1
increments
Second
acceleration/
44
*1
deceleration time
Second
45
*1
deceleration time
Acceleration/
147
*1
deceleration time
switching
frequency
*1
The parameters can be set when Pr. 160 User group read selection = "0" (Refer to page 192)
*2
Depends on the Pr. 21 Acceleration/deceleration time increments setting. The initial value for the setting range is "0 to 3600s" and the setting
increments is "0.1s".
...
Specifications differ according to the date assembled. Refer to page 399 to check the SERIAL number.
Parameter that must be set
Acceleration/deceleration times
Starting frequency and start-time
hold
Acceleration/deceleration pattern
and backlash measures
Initial Value
200V class
(400V class)
00340
5s
(00170) or lower
0 to 3600/ 360s
00490
15s
(00250) or higher
00340
10s
(00170) or lower
0 to 3600/ 360s
00490
30s
(00250) or higher
60Hz
0
5s
0 to 3600/360s
0 to 3600/360s
9999
9999
Setting of acceleration/deceleration time
and acceleration/deceleration pattern
Pr.7, Pr.8, Pr.20, Pr.21,
Pr.44, Pr.45, Pr.147
Pr.13, Pr.571
Pr.29, Pr.140 to Pr.143
Setting Range
Set the motor acceleration time.
*2
Set the motor deceleration time.
*2
Set the frequency that will be the basis of
acceleration/deceleration time.
1 to 400Hz
As acceleration/deceleration time, set the
frequency change time from stop to Pr. 20.
Increments: 0.1s
0
Range: 0 to 3600s
Increments: 0.01s
1
Range: 0 to 360s
Set the acceleration/deceleration time
*2
when the RT signal is ON.
Set the deceleration time when the RT
*2
signal is ON.
9999
Acceleration time = deceleration time
The frequency where the acceleration/
0 to 400Hz
deceleration time switches to the time set
in Pr.44 and Pr.45.
9999
No function
Refer to page
101
104
105
Description
Increments and
setting range of
acceleration/
deceleration time
setting can be
changed.
101
4
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