The following table describes the attributes used by the 2 Pipe Proportional Valve with DA-T Low Limit module.
|
Name |
Type 1 |
Description |
Default Value |
|---|---|---|---|
|
CLG-ABSEFFORT (Cooling Absolute EWMA Effort) |
Provides an EWMA based on the absolute value of (Current Present Value - Last Present Value). The PID computes this value. |
0.0 Display Units: % |
|
|
CLG-ABSERROR (Cooling Absolute EWMA Error) |
Provides an EWMA based on the absolute value of (Cooling Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: °C, °F |
|
|
CLG-ERROR (Cooling EWMA Error) |
Provides an EWMA based on the difference of (Cooling Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: °C, °F |
|
|
CLG-EWMA (Cooling EWMA Present Value) |
Provides an EWMA of the Present Value. The PID computes this value. |
0.0 Display Units: % |
|
|
Compensator Cmd |
Controls the heating/cooling valve. The valve is commanded from 0% to 100%. This output incorporates the Lead Compensator. |
0.0 Display Units: % |
|
|
Cooling Control Status |
V |
Current status of the controller for cooling control. |
Set Name: Control Status |
|
Cooling Mode |
Mode requested by State Selection, only active when the SummerWinter input is set to Summer. |
Off Set Name: COM Valve Out |
|
|
Cooling Percent Cmd |
V |
Contains the representative analog percent output on a scale of 0% to 100% for cooling. This typically is for information only and is not connected to an output. |
Display Units: % |
|
Cooling Setpoint |
Desired setpoint for the process variable to be controlled to when commanded to Control Cooling. |
22 °C, 72 °F |
|
|
Failsoft Cooling Value |
Contains the value of the Cooling Percent Cmd and Percent Cmd when Cooling Mode is commanded to Control and the process variable is unreliable. |
100% |
|
|
Failsoft Heating Value |
Value of the Heating Percent Cmd and Percent Cmd when Heating Mode is commanded to Control and the process variable is unreliable. |
100% |
|
|
Flush Position |
Contains the value the Cooling or Heating Percent Cmd is commanded to when Cooling Mode or Heating Mode = Water Flush. This value is sent directly to the Percent Cmd output. |
100% |
|
|
HC-OUTSTATE (State) |
V, G |
Current operational mode of the output controller. |
Set Name: UV 2-Pipe Out States |
|
Heating Control Status |
V |
Current status of the controller for heating control. |
Set Name: Control Status |
|
Heating Mode |
Mode requested by State Selection, only active when the SummerWinter input is set to Winter. |
Off Set Name: UV Valve Out |
|
|
Heating Percent Cmd |
V |
Contains the representative analog percent output on a scale of 0% to 100% for heating. This typically is for information only and is not connected to an output. |
Display Units: % |
|
Heating Setpoint |
Contains the desired setpoint for the process variable to be controlled to when commanded to Control Heating. |
20 °C, 68 °F |
|
|
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. |
0.0 Display Units: % |
|
|
HTG-ABSERROR (Heating Absolute EWMA Error) |
Provides an EWMA based on the absolute value of (Heating Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: °C, °F |
|
|
HTG-ERROR (Heating EWMA Error) |
Provides an EWMA based on the difference of (Heating Setpoint - Process Variable). The PID computes this value. |
0.0 Display Units: °C, °F |
|
|
HTG-EWMA (Heating EWMA Present Value) |
Provides an EWMA of the Present Value. The PID computes this value. |
0.0 Display Units: % |
|
|
Limited Max Value |
Specifies that when Cooling Mode or Heating Mode = Limited Max, this is the value the output is commanded to. |
100% |
|
|
Low Limit Process Variable |
Specifies that when the Heating Mode = Control Limit, this is the variable that is to be controlled and must therefore respond to changes in the output. This value typically is connected to the Discharge Air Temperature. |
13 °C, 55 °F |
|
|
Low Limit Setpoint |
Desired setpoint for the process variable to be controlled to when the Heating Mode = Control Limit. |
13 °C, 55 °F |
|
|
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% |
|
|
Percent Cmd |
V |
Contains an analog percent output on a scale of 0% to 100% that represents the command sent to the valve for heating or cooling. |
Display Units: % |
|
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 Set Name: Unit |
|
|
Process Variable |
Contains the variable that is to be controlled and must therefore respond to changes in the output. This value typically is connected to the Zone Temperature. |
22 °C, 72 °F |
|
|
SummerWinter |
Indicates the desired mode for this module. When it is Summer, it is in a cooling mode. When it is Winter, it is in a heating mode. |
Summer Set Name: Summer/Winter |