Attributes (Cascaded Discharge Air Setpoint Determination) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18
Language
English

The following table describes the attributes used by the Cascaded Discharge Air Setpoint Determination modules.

Table 1. Cascaded Discharge Air Setpoint Determination Attributes

Name

Type 1

Description

Default Value

Cooling Percent Cmd

 

Indicates the output of the Cooling Reset PID.

0.0

Display Units: %

Cooling Setpoint

 

Contains the desired cooling setpoint for the zone.

23 °C, 74 °F

Cooling Zone Control Status

V

Current zone cooling saturation status of the controller.

Set Name: Control Status

DATCLGMIN-SP (Discharge Air Setpoint Cooling Min)

 

Minimum cooling DA-T setpoint.

12 °C, 55 °F

DATHTGMAX-SP (Discharge Air Setpoint Heating Max)

 

Maximum heating DA-T setpoint.

40 °C, 105 °F

DATSATISFIED-SP (Discharge Air Setpoint Zone Satisfied)

 

DA-T setpoint when the application is neither heating or cooling, for example, the zone is satisfied.

21 °C, 70 °F

DATSP-STATE (State)

G, V

Current operational state of the output controller. See Table 1.

Set Name: AHU DAT RST

Discharge Air Setpoint

V

Discharge air temperature setpoint as determined by this module based on the zone air temperature error.

Display Units: °C, °F

Heating Absolute EWMA Effort

 

Provides an EWMA based on the absolute value of (Current Present Value - Last Present Value). The PID computes this value.

Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.

0.0

Display Units: %

Heating Absolute EWMA Error

 

Provides an EWMA based on the absolute value of (Setpoint - Process Variable). The PID computes this value.

Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.

0.0

Display Units: °C, °F

Heating EWMA Error

 

Provides an EWMA based on the difference of (Setpoint - Process Variable). The PID computes this value.

Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.

0.0

Display Units: °C, °F

Heating EWMA Present Value

 

Provides an EWMA of the Present Value. The PID computes this value.

Note: This attribute is used by the Cascaded Discharge Air Setpoint Determination module instance.

0.0

Display Units: %

Heating Percent Cmd

 

Indicates the output of the Heating Reset PID.

0.0

Display Units: %

Heating Setpoint

 

Contains the desired heating setpoint for the zone.

21 °C, 72 °F

Heating Zone Control Status

V

Current zone heating saturation status of the controller.

Set Name: Control Status

Mode

 

Mode requested by State Selection. Table 1.

Off

Set Name: AHU DAT RST

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. See the PID specification for more information. 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 or return air temperature may be connected to this input.

22 °C, 70 °F

0.0

Display Units: %

ZN-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.

Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.

0.0

Display Units: %

ZN-HTG-ABSERROR (Heating Absolute EWMA Error)

 

Provides an EWMA based on the absolute value of (Setpoint - Process Variable). The PID computes this value.

Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.

0.0

Display Units: °C, °F

ZN-HTG-ERROR (Heating EWMA Error)

 

Provides an EWMA based on the difference of (Setpoint - Process Variable). The PID computes this value.

Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.

0.0

Display Units: °C, °F

ZN-HTG-EWMA (Heating EWMA Present Value)

 

Provides an EWMA of the Present Value. The PID computes this value.

Note: This attribute is used by the Box Htg DA Setpoint Reset module instance.

0.0

Display Units: %

1 C - Configuration Mode Only, G - Default Element (Generated State, if applicable), SC - Simulation and Commissioning Modes Only, V - Calculated Value (Outputs)