Attributes (2 Pipe Proportional 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 Proportional Valve with DA-T Low Limit module.

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

Name

Type 1

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: %

Compensator Cmd

 

Controls the heating/cooling valve. The valve is commanded from 0% to 100%. This output incorporates the Lead Compensator.

0.0

Display Units: %

Cooling Control Status

V

Current status of the controller for cooling control.

Set Name: Control Status

Cooling Mode

 

Mode requested by State Selection, only active when the SummerWinter input is set to Summer.

Off

Set Name: COM Valve Out

Cooling Percent Cmd

V

Contains the representative analog percent output on a scale of 0% to 100% for cooling. This typically is for information only and is not connected to an output.

Display Units: %

Cooling Setpoint

 

Desired setpoint for the process variable to be controlled to when commanded to Control Cooling.

22 °C, 72 °F

Failsoft Cooling Value

 

Contains the value of the Cooling Percent Cmd and Percent Cmd when Cooling Mode is commanded to Control and the process variable is unreliable.

100%

Failsoft Heating Value

 

Value of the Heating Percent Cmd and Percent Cmd when Heating Mode is commanded to Control and the process variable is unreliable.

100%

Flush Position

 

Contains the value the Cooling or Heating Percent Cmd is commanded to when Cooling Mode or Heating Mode = Water Flush. This value is sent directly to the Percent Cmd output.

100%

HC-OUTSTATE (State)

V, G

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

 

Mode requested by State Selection, only active when the SummerWinter input is set to Winter.

Off

Set Name: UV Valve Out

Heating Percent Cmd

V

Contains the representative analog percent output on a scale of 0% to 100% for heating. This typically is for information only and is not connected to an output.

Display Units: %

Heating Setpoint

 

Contains the desired setpoint for the process variable to be controlled to when commanded to Control Heating.

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: %

Limited Max Value

 

Specifies that when Cooling Mode or Heating Mode = Limited Max, this is the value the output is commanded to.

100%

Low Limit Process Variable

 

Specifies that when the Heating Mode = Control Limit, 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

 

Desired setpoint for the process variable to be controlled to when the Heating Mode = Control Limit.

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 an analog percent output on a scale of 0% to 100% that represents the command sent to the valve for heating or cooling.

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

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

 

Contains the variable that is to be controlled and must therefore respond to changes in the output. This value typically is connected to the Zone Temperature.

22 °C, 72 °F

SummerWinter

 

Indicates the desired mode for this module. When it is Summer, it is in a cooling mode. When it is Winter, it is in a heating mode.

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)