113
Setting of acceleration/deceleration time and acceleration/ deceleration pattern
4.8 Setting of acceleration/deceleration time and acceleration/
deceleration pattern
4.8.1
Setting of the acceleration and deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 44, Pr. 45, Pr. 791, Pr. 792)
Purpose
Parameter that should be Set
Refer to Page
Motor acceleration/deceleration time
setting
Acceleration/deceleration
times
Pr. 7, Pr. 8, Pr. 20, Pr. 44, Pr. 45,
Pr. 791, Pr. 792
Starting frequency
Starting frequency and start-
time hold
Pr. 13, Pr. 571
Minimum motor speed frequency
Starting frequency
Pr. 13
Set acceleration/deceleration pattern
suitable for application
Acceleration/deceleration
pattern
Pr. 29
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 161).
Parameter
Number
Name
Initial Value
Setting
Range
Description
7
Acceleration time
7.5K or lower
5s
0 to 3600s
Motor acceleration time.
11K or higher
15s
8
Deceleration time
7.5K or lower
10s
0 to 3600s
Motor deceleration time.
11K or higher
30s
20
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
.
44
Second acceleration/
deceleration time
7.5K or lower
5s
0 to 3600s
Acceleration/deceleration time when the RT
signal is ON.
11K or higher
15s
45
Second deceleration
time
9999
0 to 3600s
Deceleration time when the RT signal is ON.
9999
Acceleration time = deceleration time
791
Acceleration time in
low-speed range
9999
0 to 3600s
Acceleration time in the low-speed range
(slower than 10% of the rated motor
frequency) is set.
9999
The acceleration time set in
Pr.7
is applied.
(When the second function is enabled, the
setting is applied.)
792
Deceleration time in
low-speed range
9999
0 to 3600s
Deceleration time in the low-speed range
(slower than 10% of the rated motor
frequency) is set.
9999
The deceleration time set in
Pr.8
is applied.
(When the second function is enabled, the
setting is applied.)
The above parameters can be set when
Pr. 160 Extended function display selection
= "0".
Performing IPM parameter initialization changes the settings.
(1) Acceleration time setting
(Pr. 7, Pr. 20)
Use
Pr. 7
Acceleration time
to set the acceleration time required to reach
Pr. 20
Acceleration/deceleration reference frequency
from 0Hz.
Set the acceleration time according to the following formula.
Acceleration
time setting
=
Pr. 20
Acceleration time from stop to maximum
operating frequency
Maximum operating
frequency -
Pr. 13
* The output starts at 0Hz under IPM motor control. Calculate with 0Hz.
Example) How to find the setting value for
Pr.7
when increasing the output
frequency to the maximum frequency of 50Hz in 10s with
Pr.20
=60Hz
(initial setting) and
Pr.13
=0.5Hz.
Pr. 7
=
60Hz
10s
12.1s
50Hz - 0.5Hz
IPM
IPM
IPM
IPM
IPM
IPM
Running
frequency
Acceleration time
Pr. 7, Pr. 44
Deceleration time
Pr. 8, Pr. 45
Time
Pr. 20
(60Hz)
(Hz)
Output
frequency
Содержание FR-F700PJ Series
Страница 13: ...IX MEMO ...
Страница 29: ...16 MEMO ...
Страница 76: ...63 MEMO ...
Страница 299: ...294 MEMO ...
Страница 321: ...316 MEMO ...
Страница 346: ...341 APPENDIX This chapter provides the APPENDIX of this product Always read the instructions before using the equipment ...