Setting Acceleration/Deceleration Time - Toshiba TOSVERT VF-MB1 Instruction Manual

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)

0
Shorten acceleration/deceleration time
Set  (automatic acceleration/deceleration) to  or .
[Parameter setting]
Title
Automatic acceleration/deceleration

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
Load torque : small
The moment of inertia : small
Deceleration
Acceleration
time
time
Function
E-5
Output
Load torque : large
frequency (Hz) The moment of inertia : large

0
Time
[sec]
Acceleration
time
Lengthen acceleration/deceleration time
Adjustment range
0: Disabled (manual setting)
1: Automatic
2: Automatic (only at acceleration)
E6581697
Time
[sec]
Deceleration
time
Default setting
0
5