Attributes (2 Pipe 2 Position Valve with DA-T Low Limit) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02
Language
English

The following table describes the attributes used by the 2 Pipe 2 Position Valve with DA-T Low Limit module.

Table 1. 2 Pipe 2 Position Valve with DA-T Low Limit Attributes

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

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