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Setting of acceleration/deceleration time and acceleration/ deceleration pattern
5.8 Setting of acceleration/deceleration time and acceleration/
deceleration pattern
5.8.1 Setting of the acceleration and deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45, Pr. 147)
Purpose Parameter that should be Set Refer to Page
Motor acceleration/deceleration
time setting
Acceleration/deceleration
times
Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44,
Pr. 45, Pr. 147
116
Starting frequency
Starting frequency and
start-time hold
Pr. 13, Pr. 571
119
Set acceleration/deceleration
pattern suitable for application
Acceleration/deceleration
pattern
Pr. 29
120
Automatically set optimum
acceleration/deceleration time
Automatic acceleration/
deceleration
Pr. 61 to Pr. 63, Pr. 292
121
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 151).
Parameter
Number
Name Initial Value
Setting
Range
Description
7 Acceleration time
3.7K or lower 5s
0 to 3600/
360s ∗2
Motor acceleration time.
5.5K, 7.5K
10s
11K, 15K
15s
8 Deceleration time
3.7K or lower 5s
0 to 3600/
360s ∗2
Motor deceleration time.
5.5K, 7.5K
10s
11K, 15K
15s
20 ∗1
Acceleration/
deceleration
reference
frequency
60Hz 1 to 400Hz
Frequency that will be the basis of
acceleration/deceleration time.
As acceleration/deceleration time, set the
frequency change time from stop to Pr. 20.
21 ∗1
Acceleration/
deceleration time
increments
0
0
Increments: 0.1s
Range: 0 to
3600s
Increments and setting
range of acceleration/
deceleration time
setting can be
changed.
1
Increments: 0.01s
Range: 0 to 360s
44 ∗1
Second
acceleration/
deceleration time
3.7K or lower 5s
0 to 3600/
360s ∗2
Acceleration/deceleration time when the RT
signal is ON.
5.5K, 7.5K
10s
11K, 15K
15s
45 ∗1
Second
deceleration time
9999
0 to 3600/
360s ∗2
Deceleration time when the RT signal is
ON.
9999 Acceleration time = deceleration time
147∗1
Acceleration/
deceleration time
switching
frequency
9999
0 to 400Hz
Frequency when automatically switching to
the acceleration/deceleration time of Pr. 44
and Pr. 45.
9999 No function
∗1 The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 167)
∗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".