Toshiba VF-AS1 Manual Do Utilizador

E6581301

E-3

5.2.2 Manually setting acceleration/deceleration time

Set acceleration time from 0 (Hz) operation frequency to maximum frequency HJ and deceleration time as the time

when operation frequency goes from maximum frequency HJ to 0 (Hz).

Output frequency [Hz]

FGE

CEE

Time [s]

CW= (Manual setting)

[Parameter setting]

Title

Function

Adjustment range

Default setting

CEE

Acceleration time 1

[Note]~ sec.

According to model

Refer to page K-48.

FGE

Deceleration time 1

[Note]~ sec.

According to model

Refer to page K-48.

Note: The minimum setting of acceleration and deceleration times have been set respectively at 0.1 sec. by default,

but they can be changed within a range of 0.01 sec. (setting range:0.01~600.0 sec.) by changing the setting of

the parameter V[R (default setting).

For details, refer to Section 5.20.

When using a setting of RV=,,, or the drive may not operate normally without a motor connected. ,It will

be able to run normally by connecting the motor.

If the programmed value is shorter than the optimum acceleration/deceleration time determined by load conditions,

overcurrent stall or overvoltage stall function may make the acceleration/deceleration time longer than the

programmed time. If an even shorter acceleration/deceleration time is programmed, there may be an overcurrent

trip or overvoltage trip for inverter protection.

For details, refer to Section 13.1.

5.3

Increasing starting torque

: Automatic torque boost

[Parameter setting]

Title

Function

Adjustment range

Default setting

Automatic torque boost

: Disabled (Always is displayed.)
: Automatic torque boost+auto-tuning 1
: Sensorless vector control 1+auto-tuning 1

Note: Parameter displays on the right always return to after resetting. The previous setting is displayed on the

left.

Ex.

• Function

Simultaneously switches inverter output V/f control and programs motor constants automatically

(auto-tuning function 1) to improve torque generated by the motor. This parameter integrates the

setting of special V/f control selection such as automatic torque boost or vector control.

{ Constant torque characteristics (default setting)

{

{ Automatic torque boost+auto-tuning 1

{

{ Sensorless vector control 1+auto-tuning 1

Note: Square reduction torque control, sensor vector control (optional), etc. can be selected using the V/f

control mode selection parameter RV.

For details, refer to Section 5.6.