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4. PI control menu
The PI control can be used to control the desired air flow or
chamber pressure. The P and I factory settings of the fans are
shown in the table below. Depending on the control method,
the factory settings may need to be amended. The default
settings are the factory settings of the air flow control.
P value menu:
• The menu can be used to control the Propotional gain. The
higher the P value, the less impact it has on the control. The
lower the P value, the more impact it has on the control.
• A theoretically functional P control value is, depending on
the control method, approximately 2–5% of the maximum
value for the fan air flow or pressure.
I value menu:
• The menu can be used to control the Integrator gain. The
higher the I value, the less impact it has on the control,
and the exact setpoint may not be reached. The lower the
I value, the more impact it has on the control, and a fairly
exact setpoint may be reached.
• A theoretically functional I control value is, depending on
the control method, approximately 0.5–2% of the maximum
value for fan air flow or pressure.
P value adjustment range 1…200, factory setting 20.
I value adjustment range 1…50, factory setting 5.
Menu
Menu
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–
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MANU
AL
Air Flow Control
Pressure Control
P value
I value
P value
I value
Vallox Exxeo 150
5
2
5
2
Vallox Exxeo 300
10
3
10
3
Vallox Exxeo 700
20
5
20
5
Vallox Exxeo 1400
20
5
20
5
Vallox Exxeo 2000
30
10
20
5
Vallox Exxeo 2500
75
30
20
5
Vallox Exxeo 4100
100
40
20
5
THE FACTORY SETTINGS OF THE PI CONTROL
