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QUANTUM™ HD COMPRESSOR CONTROL PANEL
OPERATION
090.040-O (MAR 12)
Page 43
PI CONFIGURATION
[Action]
- One of the following actions will be
shown here:
•
Forward
- The output will increase at
values greater than the Control Set-
point.
•
Reverse
- The output will increase at
values less than the Control Setpoint.
[Setpoint]
-
Enter the value that you wish to
control to.
[Proportional Band]
– This setpoint determines
the size of a region either above or below the
Control Setpoint. Within this region, the Pro-
portional component of the PI Output value is
the number between 0% and 100% that directly
corresponds to the difference between the Con-
trol Input (Actual) and the Control Setpoint (Set-
point). Outside of this region, the Proportional
component is either 100% or 0%. If the PI’s Ac-
tion is Forward, the Proportional Band extends
above the Control Setpoint. If the PI’s Action is
Reverse, the Proportional Band extends below
the Control Setpoint.
[Integration Time]
- This setpoint controls the
in
fl
uence that the Integral component exerts on
the PI Output value. The Integral component
works to push the Control Input toward the Con-
trol Setpoint by tracking the difference between
the Control Input and the Control Setpoint over
time.
[High Limit]
- The highest value that the
output can be is shown.
[Low Limit]
- The lowest value that the
output can be is shown.
[Off Value]
- If the PI’s Control is set to
When Running, then the value shown here
sets the value of the PI output when the
compressor is off.
STATUS
Control Value
- The Actual value of the input
signal. This is not a setpoint value.
Output Value
- The value of the Output signal as
controlled by the PI. This is not a setpoint value.
IO SETUP
[I/O Board]
- One of the following Analog Boards
will be shown:
•
None
•
Analog Board 1
•
Analog Board 2
[Output Channel]
- The analog board output
channel that will be used is shown here.