Attributes (Supply Flow Setpoint Control HFR) - 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 Supply Flow Setpoint HFR modules.

Table 1. Supply Flow Setpoint Control HFR Attributes

Name

Type

Description

Default Value

CLG-ABSEFFORT (Supply Flow Absolute EWMA Effort)

 

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

0.0

Display Units: %

CLG-ABSERROR (Supply Flow 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

CLG-ERROR (Supply Flow EWMA Error)

 

Provides an EWMA based on the Zone Cooling Error (Setpoint - Process Variable). The PID computes this value.

0.0

Display Units: °C, °F

CLG-EWMA (Supply Flow EWMA Present Value)

 

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

0.0

Display Units: %

CLG-O (Flow Percent)

V

Flow setpoint rescaled between 0 and 100 percent. 0% maps to the min flow (whether heating or cooling) and 100% maps to Max Cooling Flow.

Display Units: %

Control Status

V

Current saturation status of the controller.

Set Name: Control Status

Cooling Max Flow

 

Contains the desired setpoint for the flow to be controlled when the cooling mode is set to Max Cooling. This is also the maximum flow when the mode is set to Control Cooling.

500 l/s, 1000 cfm

Cooling Min Flow

 

Contains the desired setpoint for the flow to be controlled to when the mode is set to Min Cooling. This is also the minimum flow when the mode is set to Control Cooling.

0 l/s, 0 cfm

Cooling Setpoint

 

Specifies that when the mode is set to Cooling Control, this is the desired setpoint to which the process variable is controlled.

23 °C, 74 °F

Failsoft Value

 

Contains the percent of Cooling Max Flow desired when mode is set to Failsoft.

0.0%

Flow Percent

V

Indicates flow setpoint converted between 0 and 100%. A value of 0% maps to the min flow (whether heating or cooling) and 100% maps to Max Cooling Flow.

0 %

Flow Setpoint

V

Contains the desired Flow Setpoint. This is the setpoint for another activity, typically the hybrid PVDC module.

0 l/s, 0 cfm

Heating Control Status

 

Indicates the status of the feedback controller for the heating process.

Normal

Heating Max Flow

 

Indicates the maximum box flow used in Heating Flow Reset mode.

250 l/s, 500 cfm

Heating Min Flow

 

Minimum flow setpoint under any heating conditions (that is, Heating, Warmup)

0 l/s, 0 cfm

Heating Setpoint

 

Specifies that when the mode is set to Heating Control, this is the desired setpoint to which the process variable is controlled.

21 °C, 70 °F

Mode

 

Mode requested by State Selection.

Off

Set Name: VAV Cascaded Flow Controller HFR

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

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

 

When commanded to Control, this is the variable that is to be controlled. Typically connected to the Zone Temperature.

22 °C, 72 °F

SAFLOW-OUTSTATE (State)

G, V

Contains the current operational state of the output controller.

Set Name: VAV Cascaded Flow Controller