Acceleration/Deceleration Time (Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45, Pr. 110, Pr. 111) - Mitsubishi Electric FR-A500 Instruction Manual

4.2.5 Acceleration/deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45, Pr. 110, Pr. 111)
Pr. 7 "acceleration time"
Pr. 8 "deceleration time"
Pr. 20 "acceleration/deceleration reference
frequency"
Pr. 21 "acceleration/deceleration time increments"
Pr. 44 "second acceleration/deceleration time"
Pr. 45 "second deceleration time"
Pr. 110 "third acceleration/deceleration time"
Pr. 111 "third deceleration time"
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 acceleration time at restart after instantaneous power failure, refer to Pr. 611 "restart acceleration time." (page 94)
Factory
Parameter Number
Setting
7.5K or less 5 s
7
11K or more 15 s
7.5K or less 5 s
8
11K or more 15 s
20 60Hz <50Hz>
21
7.5K or less
44 5s
11K or more
7.5K or less
45 9999
11K or more
7.5K or less
110 9999
11K or more
7.5K or less
111 9999
11K or more
<Setting>
• Use Pr. 21 to set the acceleration/deceleration time and minimum setting increments:
Set value "0" (factory setting)........... 0 to 3600s (minimum setting increments: 0.1s)
Set value "1" .................................... 0 to 360s (minimum setting increments: 0.01s)
• When the Pr. 21 setting was changed, reset acceleration / deceleration time. (Note 5)
• Use Pr. 7, Pr. 44 and Pr. 110 to set the acceleration time required to reach the frequency set in Pr. 20 from
0Hz.
• Use Pr. 8, Pr. 45 and Pr. 111 to set the deceleration time required to reach 0Hz from the frequency set in
Pr. 20.
• Pr. 44 and Pr. 45 are valid when the RT signal is on, and Pr. 110 and Pr. 111 are valid when the X9 signal is
on. When both RT and X9 are on, Pr. 110 and Pr. 111 are valid. (When the RT (X9) signal is on, the other
second (third) functions such as second (third) torque boost are also selected.)
• Use any of Pr. 180 to Pr. 186 to assign the terminal used to input the X9 signal.
• Set "9999" in Pr. 45 and Pr. 111 to make the deceleration time equal to the acceleration time (Pr. 44, Pr. 110).
• When "9999" is set in Pr. 110, the function is made invalid.
Setting Range
0 to 3600 s/0 to 360 s
0 to 3600 s/0 to 360 s
1 to 400Hz
0 0, 1
0 to 3600 s/0 to 360 s
0 to 3600 s/0 to 360 s, 9999
0 to 3600 s/0 to 360 s, 9999
0 to 3600 s/0 to 360 s, 9999
Pr.20
Acceleration Pr.7
time
Pr.44
Pr.110
Related parameters
Pr. 3 "base frequency"
Pr. 29 "acceleration/deceleration
pattern"
Pr. 180 to Pr. 186 (input terminal
function selection)
Remarks
0: 0 to 3600 s, 1: 0 to 360 s
9999: Acceleration time = deceleration time
9999: Function invalid
9999: Acceleration time = deceleration time
Running frequency
Time
Deceleration
Pr.8
time
Pr.45
Pr.111
75
PARAMETERS
4