Acceleration/Deceleration Time (Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45) - Mitsubishi Electric FR-F500 Series Instruction Manual

Transistorized inverter
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4.2.5 Acceleration/deceleration time
(Pr. 7, Pr. 8, Pr. 20, Pr. 21, Pr. 44, Pr. 45)
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"
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.
Parameter Number
7.5K or less
7
11K or more
7.5K or less
8
11K or more
60Hz 〈50Hz〉
20
21
7.5K or less
44
11K or more
7.5K or less
45
11K or more
<Setting>
• Use Pr. 21 to set the acceleration/deceleration time and minimum setting increments:
Set value "0" (factory setting) ...........0 to 3600 s (minimum setting increments: 0.1 s)
Set value "1" .....................................0 to 360 s (minimum setting increments: 0.01 s)
• When you have changed the Pr. 21 setting, set the deceleation time again.
• Use Pr. 7 and Pr. 44 to set the acceleration time required to reach the frequency set in Pr. 20 from 0Hz.
• Use Pr. 8 and Pr. 45 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. When the RT signal is on, the other second functions
such as second torque boost are also selected.
• Set "9999" in Pr. 45 to make the deceleration time equal to the acceleration time Pr. 44.
Note: Changing the Pr. 21 setting changes the acceleration/deceleration setting (Pr. 7, Pr. 8, Pr. 16, Pr. 44,
Pr. 45, Pr. 504, Pr. 505)
<Example>
When Pr. 21 = "0", setting "5.0" s in Pr. 7 and "1" in Pr. 21 changes the Pr.7 setting to "0.5" s.
Factory
Setting Range
Setting
5 s
0 to 3600 s/0 to 360 s
15 s
10 s
0 to 3600 s/0 to 360 s
30 s
1 to 120Hz
0
5 s
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. 3 "base frequency"
Pr. 29 "acceleration/deceleration
0, 1
0: 0 to 3600 s, 1: 0 to 360 s
9999: Acceleration time =
Running frequency
Time
Deceleration
Pr.8
time
Pr.45
72
PARAMETERS
Related parameters
pattern"
Remarks
deceleration time

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