Attributes (Damper Control for Volume Matching) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

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%

Low Limit Delay

Defines the time the OA OpenClose damper remains closed once the low limit process variable rises above the low limit setpoint minus the deadband. This low limit delay only applies to a two position damper.

180 Seconds

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

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

Represents the current module mode of operation.

Close

Set Name: AHU OA Damper Control

Minimum EA Position

Defines the minimum position for the EAD.

0%

Mode

Contains the desired mode of operation.

Close

Set Name: AHU OA Damper Control

OA OpenClose

V

Controls the two position outdoor air damper. The outdoor air damper is commanded open or close.

Close

Set Name: Close/Open

OA Percent Cmd

V

Controls the proportional 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 Change per Minute

Return Percent Cmd

V

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

0%

Setpoint

Contains the control temperature setpoint.

13 °C, 55 °F