Attributes (Min OA Damper Proportional Output) - 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 Min OA Damper Proportional Output modules.

Table 1. Min OA Damper Proportional Output Attributes

Name

Type 1

Description

Default Value

Damper Percent Cmd

V

Contains the analog signal for the minimum OA damper, it is used to command the minimum OA damper position. This output can range from 0% to 100%.

0%

Low Limit Process Variable

 

Low limit temperature process variable. This temperature is usually the mixed air temperature or the preheat air temperature.

7 °C, 45 °F

Low Limit Proportional Band

 

Defines the temperature range where the damper is proportionally modulated to control the mixed air temperature to the low limit temperature setpoint.

5 °C, 9 °F

Low Limit Setpoint

 

Contains the upper threshold for the low limit process function. When the low limit process variable is above this temperature, the damper may be modulated to provide adequate levels of outdoor air. Below this setpoint, outdoor air levels may be limited by modulating the damper closed to control the low limit process variable to the low limit setpoint.

7 °C, 45 °F

Minimum OA Position

 

Defines the minimum OA damper position.

90%

MOAD-OUTSTATE (State)

V, G

Indicates the current operational mode of the output controller.

Close

Set Name: AHU MinOAD Mode

Mode

 

Contains the desired mode of operation.

Close

Set Name: AHU MinOAD Mode

Ramp Rate

 

Defines the rate of change in damper position. This input is used in the Ramp Min OA and Ramp Closed modes.

50 Change per Minute

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