ABB PST Series Installation And Commissioning Manual page 121

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70%
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Start
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70%
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Stop
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This parameter makes it possible to set the voltage level
where the start ramp begins. If the initial voltage is set too
low, it will only cause longer starting time and unnecessary
heating of the motor.
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Init Volt 30%
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This parameter makes it possible to set the voltage level
where the stop ramp ends. This function will be active only
if parameter Stop ramp is used.
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End Volt 30%
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30...70% Initial voltage
for stop ramp
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30...70% End voltage for
stop ramp
121