Acceleration/Deceleration Pattern - Mitsubishi FR - S500 Instruction Manual

2
.3.14

Acceleration/deceleration pattern

Set the acceleration/deceleration pattern.
Set value 0
[Linear
acceleration/deceleration]
Parameter Name
Acceleration/
29 deceleration
pattern
<Setting>
Pr. 29
Function
Setting
Linear
0 acceleration/
deceleration
S-shaped
1 acceleration/
deceleration A (*)
S-shaped
2 acceleration/
deceleration B
CAUTION
* As the acceleration/deceleration time, set the time taken to reach the Pr. 3 "base
frequency" value, not the Pr. 20 "acceleration/deceleration reference frequency"
value. For details, refer to page 59.
Related parameters
Base frequency (acceleration/deceleration time setting) setting
For setting of "1" (S-shaped acceleration/deceleration A)
Pr. 44 "second acceleration/deceleration time", Pr. 45 "second deceleration time" (refer to
page 62)
Set value 1
[S-shaped
acceleration/deceleration A]
fb
Time
Factory
Setting
0
Acceleration is made to the set frequency linearly.
(Factory setting)
For machine tool spindle applications, etc.
Used when acceleration/deceleration must be made in a short
time to a high-speed region of not lower than the base frequency.
Acceleration/deceleration is made in a pattern where fb (base
frequency) acts as the inflection point of an S shape, and you can
set the acceleration/deceleration time which matches the motor
torque reduction in the constant-output operation region of not
lower than the base frequency.
For conveyor and other load collapse prevention applications, etc.
Since acceleration/deceleration is always made in an S shape
from f2 (current frequency) to f1 (target frequency), this function
eases shock produced at acceleration/deceleration and is
effective for load collapse prevention, etc.
[S-shaped
acceleration/deceleration B]
Time
Setting
Range
0, 1, 2 Setting is enabled when Pr. 30 = "1".
Description
71
Set value 2
f1
f2
Time
Remarks
Pr. 3 "base frequency"
(refer to page 59)
2