HP 20cp User Manual Page 56

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Environmental control system 56
The Controller Settings screen displays the control setpoints for each major system component.
You can set the following configuration options:
PI settings temperature
PI settings pressure
You must select Save to store the parameter changes in the system configuration file. If you do not save your
changes, the old parameters stored in the configuration file reload when the system starts.
Item Description
Temperature setpoint (hot
aisle)
Sets the temperature setpoint for the hot aisle
Pressure setpoint
Sets the pressure setpoint
PI parameter P
Proportion gains influence the rate of change in the position of the flow control
valve or the fan speed in order to reach the pre-determined setpoints
PI parameter I
Integral gains influence the rate of change in the position of the flow control valve
or the fan speed in order to reach the pre-determined setpoints.
PI integration time
Used by the low pass filter to even the measurement values out
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