Tune Torque Control; Start Ramp - ABB PST30 Installation And Commissioning Manual

Chapter 10
Functions
Start
Figure 5: Start ramp
134

10:4 Tune torque control

Path in menu:
Menu/SETTINGS/Functional Settings/Torque control/
Tune T-Ctrl
With this parameter it is possible to change the speed of the
regulator that regulates the voltage so that the torque will
follow a predefined torque curve. In most cases, this
parameter will not have to be changed from its default value
which is 100%. If a dip occurs in the torque curve during stop,
increasing this parameter can solve the problem. This
parameter should not be set too high though, since this can
cause the torque of the motor to oscillate around the
predefined torque curve. If this is the case, decrease this
parameter.
Parameter Default value Setting range
text
Tune T-Ctrl 100%

10:5 Start ramp

Path in menu:
Menu/SETTINGS/Functional Settings/
Start/Stop / Start Ramp
When a start signal is given the softstarter performs a start
ramp by controlling the output voltage to the motor so that
either the voltage or the torque increases from the start level
to full voltage, depending on which ramp type is selected.
The start ramp continues until full voltage is applied to the
motor.
Parameter Default value Setting range
text
Start Ramp 10 s
Description
30...300% The speed of the
regulator
Description
1...30s, 1...120s Time for start
(Range depends ramp
on Start Range)
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