The following table describes the attributes used by the Cascaded Discharge Air Setpoint Determination modules.
|
Name |
Type 1 |
Description |
Default Value |
|---|---|---|---|
|
Cooling Percent Cmd |
Indicates the output of the Cooling Reset PID. |
0.0 Display Units: % |
|
|
Cooling Setpoint |
Contains the desired cooling setpoint for the zone. |
23 °C, 74 °F |
|
|
Cooling Zone Control Status |
V |
Current zone cooling saturation status of the controller. |
Set Name: Control Status |
|
DATCLGMIN-SP (Discharge Air Setpoint Cooling Min) |
Minimum cooling DA-T setpoint. |
12 °C, 55 °F |
|
|
DATHTGMAX-SP (Discharge Air Setpoint Heating Max) |
Maximum heating DA-T setpoint. |
40 °C, 105 °F |
|
|
DATSATISFIED-SP (Discharge Air Setpoint Zone Satisfied) |
DA-T setpoint when the application is neither heating or cooling, for example, the zone is satisfied. |
21 °C, 70 °F |
|
|
DATSP-STATE (State) |
G, V |
Current operational state of the output controller. See Table 1. |
Set Name: AHU DAT RST |
|
Discharge Air Setpoint |
V |
Discharge air temperature setpoint as determined by this module based on the zone air temperature error. |
Display Units: °C, °F |
|
Heating Absolute EWMA Effort |
Provides an EWMA based on the absolute value of (Current Present Value - Last Present Value). The PID computes this value. Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.
|
0.0 Display Units: % |
|
|
Heating Absolute EWMA Error |
Provides an EWMA based on the absolute value of (Setpoint - Process Variable). The PID computes this value. Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.
|
0.0 Display Units: °C, °F |
|
|
Heating EWMA Error |
Provides an EWMA based on the difference of (Setpoint - Process Variable). The PID computes this value. Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.
|
0.0 Display Units: °C, °F |
|
|
Heating EWMA Present Value |
Provides an EWMA of the Present Value. The PID computes this value. Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.
|
0.0 Display Units: % |
|
|
Heating Percent Cmd |
Indicates the output of the Heating Reset PID. |
0.0 Display Units: % |
|
|
Heating Setpoint |
Contains the desired heating setpoint for the zone. |
21 °C, 72 °F |
|
|
Heating Zone Control Status |
V |
Current zone heating saturation status of the controller. |
Set Name: Control Status |
|
Mode |
Mode requested by State Selection. Table 1. |
Off Set Name: AHU DAT RST |
|
|
PID Tuning Reset |
Causes the PID objects to reset their tuning parameters to the default based on the appropriate Process ID. |
Normal Set Name: PID Tuning Reset |
|
|
Process Units |
Specifies the units for the PID. See the PID specification for more information. For this particular module, °C and °F are the only two valid values. |
°C, °F Set Name: Unit |
|
|
Process Variable |
Control temperature. Either Zone temperature or return air temperature may be connected to this input. |
22 °C, 70 °F 0.0 Display Units: % |
|
|
ZN-HTG-ABSEFFORT (Heating Absolute EWMA Effort) |
Provides an EWMA based on the absolute value of (Current Present Value - Last Present Value). The PID computes this value. Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.
|
0.0 Display Units: % |
|
|
ZN-HTG-ABSERROR (Heating Absolute EWMA Error) |
Provides an EWMA based on the absolute value of (Setpoint - Process Variable). The PID computes this value. Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.
|
0.0 Display Units: °C, °F |
|
|
ZN-HTG-ERROR (Heating EWMA Error) |
Provides an EWMA based on the difference of (Setpoint - Process Variable). The PID computes this value. Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.
|
0.0 Display Units: °C, °F |
|
|
ZN-HTG-EWMA (Heating EWMA Present Value) |
Provides an EWMA of the Present Value. The PID computes this value. Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.
|
0.0 Display Units: % |