QUANTUM™ HD COMPRESSOR CONTROL PANEL
OPERATION
090.040-O (MAR 12)
Page 121
[Proportional Band] – This setpoint determines
the size of a region either above or below the
Control Setpoint. Within this region, the Propor-
tional component of the Superheat Output value
is the number between 0% and 100% that di-
rectly corresponds to the difference between the
Control Input (Actual) and the Control Setpoint
(Setpoint). Outside of this region, the Propor-
tional component is either 100% or 0%. If the
Superheat’s Action is Forward, the Proportional
Band extends above the Control Setpoint. If the
Superheat’s Action is Reverse, the Proportional
Band extends below the Control Setpoint.
[Integration Time] - This setpoint controls the
infl uence that the integral component exerts on
the output value. The integral component works
to push the calculated superheat value toward
the setpoint by tracking the difference between
the superheat value and the setpoint over time.
[High Limit] - The highest value that the output
can be.
[Low Limit] - The lowest value that the output
can be.
[Off Value] - If the Superheat’s Control is When
Running, this value sets the value of the Super-
heat output when the compressor is off.
Refrigerant - This will show the type of refrig-
erant, as set on the Confi guration > Package
screen.
STATUS
Output Value - The value of the Output signal
as controlled by the Superheat. This is not a set-
point value.
Superheat - This is the calculated Superheat
temperature based on the Temperature and
Pressure described above. This is not a setpoint
value.
Pressure - This is the value of the Control Pres-
sure input signal. This is not a setpoint value.
Temperature - This is the value of the Control
Temperature input signal. This is not a setpoint
value.
I/O SETUP
[I/O Board] - A pop-up box is provided to select
from the following:
• None
• Analog Board 1
• Analog Board 2
[I/O Channel] - A setpoint entry box is provided
to select the analog board output channel that
you wish to use.
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