Acceleration/Deceleration Pattern (Pr. 29 ) - Mitsubishi Electric FR-S520E Series Instruction Manual

Explanation of functions (parameters)
2.3.14 Acceleration/deceleration pattern (Pr. 29
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-pattern
1 acceleration/
deceleration A (*)
S-pattern
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.
♦Related parameters♦
•
Base frequency (acceleration/deceleration time setting) setting ⇒ Pr. 3 "base frequency"
•
Pr. 20 "acceleration / deceleration reference frequency" ⇒ refer to page 76
•
For setting of "1" (S-pattern acceleration/deceleration A)
⇒ Pr. 44 "second acceleration/deceleration time", Pr. 45 "second deceleration time" (refer to
page 76)
Set value 1
[S-pattern
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 range 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 range of not lower than the base frequency.
For prevention of load shifting in conveyor and other
applications. 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-pattern
acceleration/deceleration B]
Time
Setting
Range
0, 1, 2 Setting is enabled when Pr. 30 = "1".
Description
(refer to page 73)
88
)
Set value 2
f1
f2
Time
Remarks