The following table describes the attributes used by the Staged Box Heating Control modules.
|
Name |
Type 1 |
Description |
Default Value |
|---|---|---|---|
|
Control Band |
V |
Control band for the MSC. |
0 °C, 0 °F |
|
Control Status |
Indicates current status of the controller for cooling or heating control. |
Normal Set Name: Control Status |
|
|
Eff Minimum Off Time |
V |
Minimum off time to be used by the MSC. |
120 Seconds |
|
Eff Minimum On Time |
V |
Minimum on time to be used by the MSC. |
120 Seconds |
|
Eff Process Time Const |
V |
Contains the effective process time constant that is used by the MSC. |
0 Seconds |
|
Eff Process Variable |
V |
Contains the Process Variable to be used by the MSC. |
22 °C, 72 °F |
|
Failsoft Value |
When the mode is set to Control and the process variable is unreliable, the output is cycled to maintain this percentage duty cycle. |
0% |
|
|
HeatingCooling |
Configures the module to be compatible with either a heating or cooling source. |
Heating Set Name: HeatingCooling |
|
|
Instant Shutdown |
V |
Contains the indication to the MSC to shut off all outputs instantly. |
False |
|
Limited Max Value |
When the mode is set to this state, the output is cycled to maintain this percentage duty cycle. |
100.0% |
|
|
Max Capacity Fraction |
Contains the ratio of the largest stage to the sum of all the stages. |
1.0 |
|
|
Minimum Off Time |
Indicates the Min Off duration for all stages. |
120 Seconds |
|
|
Minimum On Time |
Indicates the Min On duration for all stages |
120 Seconds |
|
|
Mode |
Mode requested by State Selection. |
Off Set Name: COM Staged 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% |
|
|
Percent Cmd |
Indicates the analog percent output on a scale of 0 to 100%. |
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 |
Period used by the PMAC algorithm portion of the MSC. |
30 Seconds |
|
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 |
Control temperature. Either Zone temperature, discharge air temperature, return air temperature or preheat temperature may be connected to this input. |
22 °C, 72 °F |
|
|
Proof of Airflow |
Specifies that when set to True, the controller operates as normal. When set to False, the controller performs as normal and an non-zero value is allowed to be output through the Percent Request output, but the outputs are not allowed to turn on. When set to Fault, the controller performs an instant shutdown. |
True Set Name: False/True/Fault |
|
|
Setpoint |
Contains the desired setpoint for the process variable to be controlled to when the mode is Control. |
22 °C, 72 °F |