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<< Click to Display Table of Contents >> Setpoint Ramp adjustment |
  
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<< Click to Display Table of Contents >> Setpoint Ramp adjustment |
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Setpoint Ramp effects: Undershoot of pressure, Response time
This parameter defines the time that is used to decrease / raise pressure between 2 setpoints, particularly during pressure reduction, optimizing the setpoint ramp time can significantly enhance pressure response.
Pressure chart
Choose the applicable formula depending on units you are familiar with.
t = Setpoint Ramp
Adjustment procedure:
1.Start with optimal Gain Factor adjustment and Sensor Delay adjustment according to preceding tuning steps.
2.Control a typical pressure / flow situation.
3.Control a lower pressure.
4.Repeat from step 2 with longer setpoint ramps until best response is achieved.
5.Verify pressure control response for a setpoint raise situation.
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In case a long ramp time is required to get optimal performance for pressure decrease situations it may be of advantage to apply different settings for decrease / raise control situations. |
