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3.6 Acceleration/Deceleration time
[R[CI. dE[I. Pc.l. R[[2. dE[2. Pc.2. SEL2 ]
This combined setting covers the acceleration time (ACC) required for the VF-A3's output frequency
to rise from 0 to its maximum frequency and the deceleration time (DEC) from the maximum
frequency to O.
(1) Acc./dec. time
The acc./ dec. time 1 and 2 (
R[ [I. dE [I. R[
[2 and
dE
(2) can be set within a range of from
0.1 to 6000 seconds.
Output frequency
Maximum frequency
~~-----+-----+---------------------------+----------------~~~~TJme
Acceleration 1 (ACC1)
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Deceleration 1 (dEC1)
Acceleration 2 (ACO)
Deceleration 2 (dEC2l
Figure 3.7 Acceleration/deceleration time
(2) Acc./ dec. patterns
You can select the acc./dec. patterns of the acc./dec. time 1 and 2 (
Pt.:
and
Pt.2 )
Setting of Pt.1 and!
Function
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Pt.2
!
o
1
2
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Linear pattern
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Non-linear pattern 1 (Accelerates a motor gradually at speeds where
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the accelerating torque is small; suitable for mateirals handling:
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machinery)
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Non-linear pattern 2 (Accelerates a motor gradually at speeds where
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the accelerating torque is small; suitable for high speed runs.)
0: Linear pattern
1: Non-linear pattern 1
2: Non-linear pattern 2
Output frequency
Output frequency
Output frequency
Maximum frequency
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Time
.1
Setting acc./dec. time
Maximum
frequency
- - - - -
-;' 1
Setting
(Note.1)
/
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frequency
Time
..,. _________ ...1-_
.1
Setting acc./dec. time
Maximum
frequency
(~t~.2)
- - -
Setting
frequency
Time
L -_ _ _
.....L-._
·1
Setting acc./dec. time
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