Attributes (Damper Trouble Detection) - 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

Table 1 describes the attributes used by the Damper Trouble Detection modules.

Table 1. Damper Trouble Detection Attributes

Name

Type 1

Description

Default Value

Closed Flow Fraction

 

Indicates the maximum fraction of the Max Flow to expect when the damper is fully closed. This value is non-zero to account for leakage of the damper when fully closed.

0.10

Display Precision: 100ths

Current Flow

 

Indicates the flow measurement for the monitored damper.

0.0 l/s, 0.0 cfm

Damper Closed

 

Indicates whether the damper is closed.

False

Damper Open

 

Indicates whether the damper is open.

False

Damper Percent Cmd

 

Indicates the Present Value of the damper output object (Analog Output Object or Position Adjust Output Object).

0.0%

Delay

 

Specifies the time allowed for the damper to open or close before the flow is checked to indicate Trouble.

75 seconds

Display Precision: 1s

Max Flow

 

Indicates the rated flow for the monitored damper.

500.0 l/s, 1000.0 cfm

Open Flow Fraction

 

Indicates the minimum fraction of the Max Flow to expect when the damper is fully opened. Adjust this value after testing and balancing each VAV box to determine the actual flow that can be achieved during an emergency situation (for example, pressurize).

0.85

Display Precision: 100ths

Trouble

G

Indicates the current status of the damper control.

False

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