Setting Of Acceleration/Deceleration Time And Acceleration/ Deceleration Pattern; Setting Of The Acceleration And Deceleration Time (Pr. 7, Pr. 8, Pr. 20, Pr. 44, Pr. 45) - Mitsubishi Electric FR-D720-070 Instruction Manual

Setting of acceleration/deceleration time and acceleration/ deceleration pattern

4.7 Setting of acceleration/deceleration time and acceleration/
deceleration pattern
Purpose
Motor acceleration/deceleration Acceleration/deceleration
time setting times
Starting frequency and
Starting frequency
start-time hold
Set acceleration/deceleration Acceleration/deceleration
pattern suitable for application pattern
4.7.1 Setting of the acceleration and deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 44, Pr. 45)
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 136).
Parameter
Name
Number
FR-D720-165 or less
FR-D740-080 or less
7 Acceleration time FR-D720S-008 to 100
FR-D720-238 or more
FR-D740-120 or more
FR-D720-165 or less
FR-D740-080 or less
8 Deceleration time FR-D720S-008 to 100
FR-D720-238 or more
FR-D740-120 or more
Acceleration/
20 ∗1
deceleration
reference frequency
FR-D720-165 or less
FR-D740-080 or less
Second acceleration/
44 ∗1
FR-D720S-008 to 100
deceleration time
FR-D720-238 or more
FR-D740-120 or more
Second deceleration
45 ∗1
time
∗1 The above parameters can be set when Pr. 160 Extended function display selection = "0". (Refer to page 162)
(1)
Pr. 20
Running
(60Hz)
frequency
Time
Acceleration time Deceleration time
Pr. 7, Pr. 44
Pr. 8, Pr. 45
Example)When Pr. 20 = 60Hz (initial value), Pr. 13 = 0.5Hz, and acceleration can be
made up to the maximum operating frequency of 50Hz in 10s
96
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Parameter that should be Set
Pr. 7, Pr. 8, Pr. 20, Pr. 44, Pr. 45
Pr. 13, Pr. 571
Pr. 29
Setting
Initial Value
Range
5s
0 to 3600s Motor acceleration time.
10s
5s
0 to 3600s Motor deceleration time.
10s
Frequency that will be the basis of
acceleration/deceleration time.
60Hz 1 to 400Hz
As acceleration/deceleration time, set the
frequency change time from stop to Pr. 20.
5s
Acceleration/deceleration time when the RT
0 to 3600s
signal is on.
10s
0 to 3600s Deceleration time when the RT signal is on.
9999
9999 Acceleration time = deceleration time
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.
Pr. 20
Acceleration Acceleration time from stop to maximum
×
=
Maximum operating
time setting operating frequency
frequency - Pr. 13
Pr. 7 =
Refer to Page
96
98
99
Description
60Hz
× 10s
12.1s
50Hz - 0.5Hz