Attributes (Occupied Sequencing [AHU MADD w HR]) - 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 Occupied Sequencing (AHU MADD w HR) module.

Table 1. Occupied Sequencing (AHU MADD w HR) Attributes

Name

Description

Default Value

CD-STATE (State)

Represents the current state generated by the sequence.

Satisfied

See Primary States (Occupied Sequencing [AHU MADD w HR]).

Cooling Control Status

Value fed back from the mechanical cooling PID controller necessary for the sequencer to determine what actions to take.

Normal

Set Name: Control Status

Damper Control Status

Value fed back from the economizer PID controller necessary for the sequencer to determine what actions to take.

Normal

Set Name: Control Status

Fan Ready

Comes from the Start/Stop Sequencer and indicates that the fans and dampers have been sequenced properly.

False

Free Cooling Available

Output of the Economizer Availability module.

False

Heat Recovery Control Status

Contains the value fed back from the heat recovery PID controller necessary for the sequencer to determine what actions to take.

Normal

Set Name: Control Status

Heat Recovery Modulated

Indicates whether the heat recovery is modulated (True equals modulated and False equals not modulated).

False

Preheat Control Status

Contains the value fed back from the preheat PID controller necessary for the sequencer to determine what actions to take.

Normal

Set Name: Control Status

Preheat Percent Cmd

Indicates the preheat command used to prevent the preheat from cycling off and on unnecessarily when the AHU starts.

0.0%

Process Variable

Cold deck discharge temperature compared to the setpoint and used to determine whether heating or cooling is required.

13 °C, 55 °F

Setpoint

Setpoint the state generator attempts to control.

13 °C, 55 °F