Attributes (Damper Control for Economizer) - 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 Damper Control for Economizer modules.

Table 1. Damper Control for Economizer Attributes

Name

Type 1

Description

Default Value

Damper Control Status

V

Contains the PID Status, and the possible values are Normal, Overridden, Disabled, Low, Timing Low, High, and Timing High.

Normal

Set Name: Control Status

Exhaust Percent Cmd

V

Controls the exhaust air damper. The exhaust air damper is commanded from 0% to 100%.

0%

FSCS OAD Cmd 2

 

FSCS Outdoor Air Damper Command

 

FSCS EAD Cmd 22

 

FSCS Exhaust Air Damper Command

 

FSCS RAD Cmd2

 

FSCS Return Air Damper Command

 

Low Limit Process Variable

 

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

13 °C, 55 °F

Low Limit Proportional Band

 

Specifies the range across which the damper is proportionally modulated shut as the Low Limit Process Variable drops below the Low Limit Setpoint.

5 °C, 9 °F

Low Limit Setpoint

 

Contains the upper threshold for the low limit temperature, below which the damper is proportionally modulated shut during normal control modes.

7 °C, 45 °F

MAD-OUTSTATE (State)

V, G

Operating state as determined by the Mode input.

Close

Set Name: AHU OA Damper Control

Minimum OA Position

 

Defines the minimum position for the OAD and the EAD.

0.0%

Mode

 

Contains the desired mode of operation

CloseSet Name: AHU OA Damper Control

OA Percent Cmd

V

Controls the outdoor air damper. The outdoor air damper is commanded from 0% to 100%.

0%

Output Overridden

 

Indicates when the actual output that is controlled by this output controller is overridden by a user.

False

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 ID

 

Contains the type of cooling process that this output controller is controlling when the mode is T Control.

DA-T

Set Name: Process ID

Process Units

 

Specifies the units for the cooling PID. For this particular module, °C and °F are the only two valid values.

°C, °F

Set Name: Unit

Process Variable

 

Contains the control temperature. Either Zone temperature, discharge air temperature, or return air temperature may be connected to this input.

13 °C, 55 °F

Ramp Rate

 

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

50.0 Change per minute

Return Percent Cmd

V

Controls the return air damper. The return air damper is commanded from 0% to 100%.

0%

Setpoint

 

Control temperature setpoint.

13 °C, 55 °F

1 C - Configuration Mode Only, G - Default Element (Generated State, if applicable), SC - Simulation and Commissioning Modes Only, V - Calculated Value (Outputs)
2 The FSCS Cmds (EAD, OAD, RAD) are not used.