The following table describes the attributes used by the Flow Setpoint (VAV Single Duct) modules.
|
Name |
Type 1 |
Description |
Default Value |
|---|---|---|---|
|
CLG-ABSEFFORT (Supply Flow Absolute EWMA Effort) |
Provides an EWMA based on the absolute value of Zone Cooling Error (Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: % |
|
|
CLG-ABSERROR (Supply Flow Absolute EWMA Error) |
Provides an EWMA based on the absolute value of (Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: °C, °F |
|
|
CLG-ERROR (Supply Flow EWMA Error) |
Provides an EWMA based on the Zone Cooling Error (Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: °C, °F |
|
|
CLG-EWMA (Supply Flow EWMA Present Value) |
Provides an EWMA of the Present Value. The PID computes this value. |
0.0 Display Units: % |
|
|
CLG-O (Flow Percent) |
V |
Flow setpoint rescaled between 0 and 100 percent. 0% maps to the min flow (whether heating or cooling) and 100% maps to Max Cooling Flow. |
Display Units: % |
|
Control Status |
V |
Current saturation status of the controller. |
Set Name: Control Status |
|
Cooling Max Flow |
Contains the desired setpoint for the flow to be controlled when the cooling mode is set to Max Cooling. This is also the maximum flow when the mode is set to Control Cooling. |
500 l/s, 1000 cfm |
|
|
Cooling Min Flow |
Contains the desired setpoint for the flow to be controlled to when the mode is set to Min Cooling. This is also the minimum flow when the mode is set to Control Cooling. |
0 l/s, 0 cfm |
|
|
Cooling Setpoint |
Specifies that when the mode is set to Cooling Control, this is the desired setpoint to which the process variable is controlled. |
23 °C, 74 °F |
|
|
Failsoft Value |
Contains the percent of Cooling Max Flow desired when mode is set to Failsoft. |
0.0% |
|
|
Flow Setpoint |
V |
Contains the desired Flow Setpoint. This is the setpoint for another activity, typically the hybrid PVDC module. |
0 l/s, 0 cfm |
|
Heating Min Flow |
Minimum flow setpoint under any heating conditions (that is, Heating, Warmup) |
0 l/s, 0 cfm |
|
|
Heating Setpoint |
Specifies that when the mode is set to Heating Control, this is the desired setpoint to which the process variable is controlled. |
21 °C, 70 °F |
|
|
Mode |
Mode requested by State Selection. |
Off Set Name: VAV Cascaded Flow Controller |
|
|
Output Overridden |
Indicates when the actual output controlled by this output is overridden by a user. |
False |
|
|
Output Position |
Provides the current Present Value of the output that this controller drives. |
0% |
|
|
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. For this particular module, °C and °F are the only two valid values. |
°C, °F Set Name: Unit |
|
|
Process Variable |
When commanded to Control, this is the variable that is to be controlled. Typically connected to the Zone Temperature. |
22 °C, 72 °F |
|
|
SAFLOW-OUTSTATE (State) |
G, V |
Contains the current operational state of the output controller. |
Set Name: VAV Cascaded Flow Controller |