Hitachi NES1-002LB, Краткое руководство пользователя

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Chapter 7 Explanation of Functions
7 - 30
7.5.13 Acceleration/deceleration curve selection
You can set different patterns of motor acceleration and deceleration according to the type of system to be
driven by the inverter.
Use functions "A097" and "A098" to select acceleration and deceleration patterns, respectively.
You can individually set an acceleration pattern for acceleration and a deceleration pattern for
deceleration.
When the acceleration/deceleration pattern is set other than 00 (linear) using analog input as frequency
source is to be avoided because it prolongs the acceleration or deceleration time.
Item Function code Data or range of data Description
Acceleration/deceleration
curve selection
A097/A098
00 Linear acceleration/deceleration
01 S-curve acceleration/deceleration
02 U-curve acceleration/deceleration
03 Inverted-U-curve acceleration/deceleration
Acceleration/deceleration
curve constants setting
A131/ A132 01 to 10
01 (small degree of swelling)
10 (large degree of swelling)
(1) Acceleration/deceleration pattern selection
Select acceleration and deceleration patterns with reference to the following table:
Setting 00 01 02 03
Curve Linear S curve U curve Inverted-U curve
A097
(accele-
ration
pattern)
A098
(decele-
ration
pattern)
Descrip-
tion
With this pattern, the
motor is accelerated or
decelerated linearly
until its speed reaches
the set output
frequency. This pattern is
effective for preventing
the collapse of cargo
carried by a lift or
conveyor driven by the
inverter. This pattern is effective for the tension control
on a winding machine driven by the inverter (to
prevent cutting of the object to be wound).
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time
Outpu
t frequ
ency
Time