The following table describes the attributes used by the 2 Pipe 2 Position Valve with DA-T Low Limit module.
|
Name |
Type nnz1558005103072.html#nnz1558005103072__fn_atts_2p2posdat |
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: % |
|
|
CLG-O (Cooling Percent Cmd) |
V |
Contains a representative analog percent output on a scale of 0% to 100%. This is the value that represents the desired (requested) output for purposes of determining the Fan On/Off command. This value typically feeds back to the inputs of the Fan Status Determination block. |
Display Units: % |
|
Control Band |
V |
Contains the control band for the MSC. |
Display Units: °C, °F |
|
Cooling Control Status |
V |
Current status of the controller for cooling control. |
Set Name: Control Status |
|
Cooling Mode |
Contains the mode requested by State Selection. |
Off Set Name: COM Valve Out |
|
|
Cooling Setpoint |
Desired setpoint for the process variable to be controlled to when the mode is Control Cooling and SummerWinter is Summer. |
22 °C, 72 °F |
|
|
Eff Minimum Off Time |
V |
Minimum off time to be used by the MSC. |
Display Units: Seconds |
|
Eff Minimum On Time |
V |
Minimum on time to be used by the MSC. |
Display Units: Seconds |
|
Eff Process Time Const |
V |
Effective process time constant that is used by the MSC. |
Display Units: Seconds |
|
Eff Process Variable |
V |
Contains the Process Variable to be used by the MSC. |
Display Units: °C, °F |
|
Failsoft Cooling Value |
Value of the output when the Cooling Mode is Failsoft. |
100.0% |
|
|
Failsoft Heating Value |
Value of the output when the Heating Mode is Failsoft. |
100.0% |
|
|
HC-MINOFF (Minimum Off Time) |
Minimum Off Duration for all stages. |
120 Seconds |
|
|
HC-MINON (Minimum On Time) |
Minimum On Duration for all stages. |
120 Seconds |
|
|
HC-OUTSTATE (State) |
G, V |
Contains the 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 |
Contains the mode requested by State Selection. |
OffSet Name: UV Valve Out |
|
|
Heating Setpoint |
Contains the desired setpoint for the process variable to be controlled to when the mode is Control Heating and SummerWinter is Winter. |
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: % |
|
|
HT-O (Heating Percent Cmd) |
V |
Contains a representative analog percent output on a scale of 0% to 100%. This is the value that represents the desired (requested) output for purposes of determining the Fan On/Off command. This value typically feeds back to the inputs of the Fan Status Determination block. |
Display Units: % |
|
Limited Max Value |
Specifies that when the mode is Limited Max Heating or Limited Max Cooling, the output is set to this value. |
100.0% |
|
|
Low Limit Process Variable |
Specifies that when the mode is Control Limit and SummerWinter is Winter, 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 |
Contains the desired setpoint for the low limit process variable to be controlled to when the mode is Control Limit and SummerWinter is Winter. |
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 a representative analog percent output on a scale of 0% to 100%. This output is connected to the MSC input. |
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 |
|
|
PMAC Period |
V |
Period used by the PMAC algorithm portion of the MSC. |
Display Units: Seconds |
|
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 |
Variable that is to be controlled and must therefore respond to changes in the output. This attribute typically is connected to the Zone Temperature. |
22 °C, 72 °F |
|
|
SummerWinter |
Indicates the desired summer-winter mode for this module. When it is Summer it is in a cooling mode and responds to the Cooling Mode input. When it is Winter it is in a heating mode and responds to the Heating Mode input. |
Summer Set Name: Summer/Winter |