Using Pid Control - GE Uniflux 10 Instrucciones De Funcionamiento

D.2

Using PID control

Usage in UNICORN for UniFlux 10
Whenever an automated process step requires the control of pressure (feed, retentate
and permeate pressure), the UNICORN control software of UniFlux 10 employs PID-type
controllers to control the pressure to its setpoint.
The controllers for the feed pump and the trans membrane pressure (TMP) may require
adjustment depending on the type and behaviour of the filter.
The I parameter can have values between 0 and infinity. Smaller values have a greater
effect and a value of infinity has no effect. Note: The value infinity is set as 9999 in
UNICORN.
Most often, a simple PI-regulator is preferable for control of pressure, and UniFlux 10 is
therefore configured by default with the D parameter set to zero.
Setting up feedback tuning
UNICORN uses so-called PI feedback tuning, where P and I are parameters that determine
the tuning characteristics.
There are two ways to apply the feedback tuning instructions:
•
•
UniFlux 10 Instrucciones de funcionamiento 28993587 AE
In the Method Editor module.
In the System Control module, reached with the commands Manual or System
Settings.
D PID control and feedback tuning
D.2 Using PID control
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