Stop Ramp; Initial Voltage - ABB PST30 Installation And Commissioning Manual

Stop
Figure 6: Stop ramp
U
70%
30%
Start
Figure 7: Initial voltage for Start ramp
1SFC132003M0201

10:6 Stop ramp

Path in menu:
Menu/SETTINGS/Functional Settings/
Start/Stop / Stop Ramp
When a stop signal is given, the softstarter performs a stop
ramp by controlling the output voltage to the motor so that
either the voltage or the torque decreases from full voltage to
end voltage, depending on which ramp type is selected. If the
ramp time is set to 0, the softstarter will cut the voltage
directly when the stop command is given.
This parameter shall be set to 0 for applications with big
flywheel mass involved!
Parameter Default value Setting range
text
Stop Ramp 0 s

10:7 Initial voltage

Path in menu:
Menu/SETTINGS/Functional Settings/
Start/Stop / Init Volt
This parameter makes it possible to set the voltage level
where the start ramp begins. The voltage or the torque will
then increase from this level to full voltage. If the initial
voltage is set too low, it will only cause longer starting time
and unnecessary heating of the motor.
Parameter Default value Setting range
text
Init Volt 30%
Description
0...30s, 0...120s Time for stop
(Range depends ramp
on Stop Range)
Description
30...70% Initial voltage
for start ramp
Chapter 10
Functions
135