Toshiba VF-AS1 ユーザーズマニュアル
E6581301
E-2
5
5.2
Setting acceleration/deceleration time
CW
CW
CW
CW
: Automatic acceleration/deceleration
CEE
CEE
CEE
CEE
: Acceleration time 1
FGE
FGE
FGE
FGE
: Deceleration time 1
5.2.1 Automatic acceleration/deceleration
This automatically adjusts acceleration and deceleration time in line with load size.
CW
CW
CW
CW =
* Adjusts the acceleration/deceleration time automatically within the range of 1/8 to 8 times as long as the
time set with the CEE
CEE
CEE
CEE or FGE
FGE
FGE
FGE, depending on the current rating of the inverter.
CW
CW
CW
CW =
* Automatically adjusts speed during acceleration only. During deceleration, speed is not adjusted
automatically but reduced at the rate set with FGE
FGE
FGE
FGE.
Deceleration
Acceleration
HJ
HJ
HJ
HJ
When load is small
Time [s]
0
Deceleration
Acceleration
HJ
HJ
HJ
HJ
When load is large
Output
frequency [Hz]
frequency [Hz]
Output
frequency [Hz]
frequency [Hz]
Time [s]
0
Acceleration/deceleration time →
→
→
→ decrease
Acceleration/deceleration time →
→
→
→ increase
Set CW
CW
CW
CW (automatic acceleration/deceleration) to
or
.
[Parameter setting]
Title
Function
Adjustment range
Default setting
CW
Automatic acceleration/deceleration
:Disabled (Manual setting)
:Automatic setting
:Automatic setting (during
:Automatic setting
:Automatic setting (during
acceleration only)
!
When automatically setting acceleration/deceleration time, always change the acceleration/deceleration time so
that it conforms with the load.
The acceleration/deceleration time changes constantly with load fluctuations.
For inverters that requires a fixed acceleration/deceleration time, use the manual settings (CEE, FGE).
!
When using a braking resistor or braking unit, do not set the CW=. Or the regenerative braking resistor may be
overloaded.
!
Use this parameter after actually connecting the motor.
!
Setting acceleration/deceleration time (CEE, FGE) in conformance with mean load allows optimum setting that
conforms to further changes in load.
!
When the inverter is used with a load that fluctuates considerably, it may fail to adjust the acceleration or
deceleration time in time, and therefore may be tripped.
• Function
1) For acceleration time 1 CEE programs the time that it takes for the inverter output frequency to go from
0Hz to maximum frequency HJ.
2) For deceleration time 1 FGE programs the time that it takes for the inverter output frequency to got from
maximum frequency HJ to 0Hz.