Acceleration And Deceleration; Acceleration And Deceleration Time - Mitsubishi Electric FR-F740 EC Instruction Manual

Parameter
6.6

Acceleration and deceleration

Purpose
Motor acceleration/deceleration
time setting
Starting frequency
Set acceleration/deceleration
pattern suitable for application
6.6.1

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 in-
crease/decrease.
Pr.
Name
No.
7
Acceleration time
8
Deceleration time
Acceleration/
deceleration
20
reference
frequency
Acceleration/
21
deceleration time
increments
Second acceleration/
44
deceleration time
Second deceleration
45
time
Acceleration/deceler-
147
ation time switching
frequency
The above parameters can be set when Pr. 160 = 0.
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".
FR-F700 EC
Setting
Initial Value
Range
00170
5s
or less
0–3600s/
0–360s
00250
15s
or more
00170
10s
or less
0–3600s/
0–360s
00250
30s
or more
50Hz 1–400Hz
0
0
1
0–3600s/
5s
0–360s
0–3600s/
0–360s
9999
9999
0–400Hz
9999
9999
Parameters that must be set
Acceleration/deceleration times
Starting frequency and start-time hold
Acceleration/deceleration pattern and back
lash measures
Description
Set the motor acceleration time.
Set the motor deceleration time.
Set the frequency that will be the
basis of acceleration/deceleration
time.
As acceleration/deceleration time, set
the frequency change time from stop
to Pr. 20.
Increments:
0.1s
Increments and
Range:
setting range of
0–3600s
acceleration/
deceleration time
Increments:
setting can be
0.01s
changed.
Range:
0–360s
Set the acceleration/deceleration
time when the RT signal is on.
Set the deceleration time when the
RT signal is on.
Acceleration time = deceleration time
Frequency when automatically
switching to the acceleration/deceler-
ation time of Pr. 44 and Pr. 45.
No function
Acceleration and deceleration
Refer to
Section
Pr. 7, Pr. 8, 6.6.1
Pr. 20, Pr. 21,
Pr. 44, Pr. 45,
Pr. 147
Pr. 13, Pr. 571 6.6.2
Pr. 29, 6.6.3
Pr. 140–Pr. 143
Parameters referred to
3 Base frequency
10 DC injection brake
operation frequency
29 Acceleration/
deceleration pattern
selection
125 Frequency setting
gain frequency
126 Frequency setting
gain frequency
178–189 Input terminal func-
tion selection
999 Automatic
parameter setting
Refer to
Section
6.4.1
6.8.1
6.6.3
6.15.4
6.15.4
6.9.1
6.21.7
6 - 75