E6581697
E-5
5
5.4 Setting acceleration/deceleration time
：Automatic acceleration/deceleration
：Acceleration time 1
：Deceleration time 1
Function
1) For acceleration time 1 programs the time that it takes for the inverter output frequency to go
from 0.0Hz to maximum frequency .
2) For deceleration time 1 programs the time that it takes for the inverter output frequency to go
from maximum frequency to 0.0Hz.
5.4.1 Automatic acceleration/deceleration
This automatically adjusts acceleration and deceleration time in line with load torque and the moment of inertia.
=
* Adjusts the acceleration/deceleration time automatically within the range of 1/8 to 8 times as long as the
time set with the or , depending on the current rating of the inverter.
=
* Automatically adjusts speed during acceleration only. During deceleration, speed is not adjusted
automatically but reduced at the rate set with .
Output
frequency (Hz)
Deceleration
time
Acceleration
time
Load torque : small
The moment of inertia : small
Time
[sec]
0
Shorten acceleration/deceleration time
Deceleration
time
Acceleration
time
Output
frequency (Hz)
Time
[sec]
0
Lengthen acceleration/deceleration time
Load torque : large
The moment of inertia : large
Set (automatic acceleration/deceleration) to or .
[Parameter setting]
Title Function Adjustment range Default setting
Automatic acceleration/deceleration
0: Disabled (manual setting)
1: Automatic
2: Automatic (only at acceleration)
0
, When automatically setting acceleration/deceleration time, always change the acceleration/deceleration
time so that it conforms to the load. The acceleration/deceleration time changes constantly with load
fluctuations. For inverters that require a fixed acceleration/deceleration time, use the manual settings
(, ).
, Setting acceleration/deceleration time (,) in conformance with mean load allows optimum
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