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Acceleration/deceleration Pattern (pr. 29) - Mitsubishi Electric FR-E520 Instruction Manual

Transistorized inverter.
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4.2.12 Acceleration/deceleration pattern (Pr. 29)

Pr. 29 "acceleration/deceleration
pattern"
Set the acceleration/deceleration pattern.
Parameter
Factory
Number
Setting
29
0
Set value 0
[Linear acceleration/deceleration]
<Setting>
Pr. 29 Setting
Function
Linear
0
acceleration/
deceleration
S-shaped
acceleration/
1
deceleration
A
(Note)
S-shaped
acceleration/
2
deceleration
B
Note: For the acceleration/deceleration time, set the time required to reach the "base
frequency" in Pr. 3, not the "acceleration/deceleration reference frequency" in
Pr. 20.
Setting
Range
0, 1, 2
Set value 1
[S-shaped
acceleration/deceleration A]
fb
Time
Linear acceleration/deceleration is made up/down to the
preset frequency (factory setting).
For machine tool spindles
This setting is used when it is necessary to make
acceleration/deceleration in a short time up to the base
frequency or higher speed range.
In this acceleration/deceleration pattern, fb (base
frequency) is always the inflection point of an S shape,
and you can set the acceleration/deceleration time
according to the reduction in motor torque in the base
frequency or higher constant-output operation range.
For prevention of cargo collapse on conveyor, etc.
This setting provides S-shaped acceleration/deceleration
from f2 (current frequency) to f1 (target frequency),
easing an acceleration/deceleration shock. This pattern
has an effect on the prevention of cargo collapse, etc.
Related parameters
Pr. 3 "base frequency"
Pr. 7 "acceleration time"
Pr. 8 "deceleration time"
Pr. 20 "acceleration/deceleration
reference frequency"
Pr. 44 "second
acceleration/deceleration time"
Pr. 45 "second deceleration time"
[S-shaped
acceleration/deceleration B]
Time
Description
99
PARAMETERS
Set value 2
f1
f2
Time
4

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