Toshiba TOSVERT VF-AS3 Instruction Manual page 202

5. 3. 3
<AU1: Automatic Acc/Dec>
Basic parameter
■ Function
This is a parameter that automatically adjusts the acceleration/deceleration time according to the
4
load condition to prevent an overcurrent trip during acceleration/deceleration.
5
Small load
Output frequency (Hz)
<FH>
0
Acceleration time
9
Acceleration/deceleration time -> decrease
■ Parameter setting
Title
AU1
■ Selecting a setting value
1: Automatic Acc/Dec
The acceleration/deceleration time is adjusted automatically in the range in which the output current
does not exceed the rated current of the inverter. The adjustment range is 1/8 to 8 times as long as
the time set with <ACC: Acceleration time 1> and <dEC: Deceleration time 1>. If you set suitable
values for the average load with <ACC: Acceleration 1> and <ｄEC: Deceleration 1> in advance, it
will be easy to deal with load fluctuation.
2: Automatic Acc only
Only the acceleration time is adjusted automatically. The speed is decelerated according to the
setting of <dEC: Deceleration time 1>.
5. [Fundamental operation] How to use parameters
Acceleration/deceleration time adjustment
automatically according to load
Time (s)
Deceleration time
Parameter name
Automatic Acc/Dec
AU1 : Automatic Acc/Dec
0: Disabled
1: Automatic Acc/Dec
2: Automatic Acc only
Large load
Output frequency (Hz)
<FH>
0
Acceleration time
Acceleration/deceleration time -> increase
Adjustment range
0: Disabled
1: Automatic Acc/Dec
2: Automatic Acc only
5-36
E6582062
STOP 0.0Hz
15:23
Time (s)
Deceleration time
Default
setting
1