The following table describes the attributes used by the Heating Staged Outputs with DA-T Low Limit module.
|
Name |
Type 1 |
Description |
Default Value |
|---|---|---|---|
|
Control Band |
V |
Control band for the MSC. |
Display Units: °C |
|
Control Status |
V |
Current status of the controller for heating control. |
Set Name: Control Status |
|
Eff Minimum Off Time |
V |
Minimum off time used by the MSC. |
Display Units: Seconds |
|
Eff Minimum On Time |
V |
Minimum on time used by the MSC. |
Display Units: Seconds |
|
Eff Process Time Const |
V |
Contains the effective process time constant used by the MSC. |
Display Units: Seconds |
|
Eff Process Variable |
V |
Process Variable used by the MSC. |
Display Units: °C |
|
Failsoft Value |
Contains the value of the output when the mode is Failsoft. |
0.0% |
|
|
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 (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 (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: % |
|
|
HTG-MINOFF (Minimum Off Time) |
Contains the Min Off Duration for all stages. |
120 Seconds |
|
|
HTG-MINON (Minimum On Time) |
Contains the Min On Duration for all stages. |
120 Seconds |
|
|
HTG-O (Percent Cmd) |
V |
Contains a representative analog percent output on a scale of 0% to 100%. |
Display Units: % |
|
HTG-OUTSTATE (State) |
V, G |
Current operational mode of the output controller. |
Set Name: UV Discrete Out |
|
Instant Shutdown |
V |
Contains the indication to the MSC to shut all outputs off instantly. |
|
|
Limited Max Value |
Specifies that when the mode is set to Limited Max, the output cycles to maintain this percentage duty cycle. |
100.0% |
|
|
Low Limit Process Variable |
Contains the process variable controlled when the mode is set to Control Limit. 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. |
13 °C, 55 °F |
|
|
Max Capacity Fraction |
Contains the ratio of the largest stage to the sum of all the stages. |
1.0 |
|
|
Mode |
Mode requested by State Selection. |
Off Set Name: UV Discrete Out |
|
|
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 |
|
|
PMAC Period |
V |
Specifies the 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 |
Specifies that when the mode is set to Control, this is the variable that is controlled. This value typically is connected to the Zone Temperature. |
22 °C, 72 °F |
|
|
Proof of Airflow |
Specifies that when set to False or True, the controller operates as normal. When set to Fault, the controller transitions to an instant off state. |
True Set Name: False/True/Fault |
|
|
Setpoint |
Desired setpoint for the process variable to be controlled to when the mode is set to Control. |
22 °C, 72 °F |