Attributes (Occupied Zone Sequencing [UV Cycle W]) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help
Product
Controls > Control Tools > Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18

The following table describes the attributes used by the Occupied Zone Sequencing (UV Cycle W) module.

Table 1. Occupied Zone Sequencing (UV Cycle W) Attributes

Name

Description

Default Value

Cooling Control Status

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

Normal

Set Name: Control Status

Cooling Setpoint

Contains the desired setpoint for the zone temperature when under cooling control.

23 °C, 74 °F

Damper Control Status

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

Normal

Set Name: Control Status

Discharge Air Temperature

Contains the value that is to be compared to the Discharge Air Low Limit (DALL) and is used to determine whether it is necessary to enter DALL control to either turn on heating or modulate the OA Damper closed to keep the discharge air temperature from falling below the DALL.

22 °C, 72 °F

Fast Sequence Enabled

Allows the user to enable or disable the transition to satisfied when the setpoint changes by more than the Setpoint Threshold.

True

Free Cooling Available

Indicates whether economizer cooling is available.

False

Heating Control Status

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

Normal

Set Name: Control Status

Heating Percent Cmd

Indicates the current command from the heating controller that operates first. This signal comes directly from the PID in the output controller module.

0.0

Display Units: %

Heating Setpoint

Contains the desired setpoint for the zone temperature when under heating control.

21 °C, 70 °F

Low Limit Setpoint

Contains the low limit for the Discharge Air Temperature.

13 °C, 55 °F

Setpoint Threshold

Used to determine whether a significant setpoint change has occurred.

1 °C, 2 °F

ZNT-STATE (State)

Represents the current state generated by the zone temperature sequence.

See Primary States (Occupied Zone Sequencing [UV Cycle W]).

Satisfied

Zone Temperature

Contains the value that is compared to the heating and cooling setpoints and is used to determine whether it is necessary to heat or cool the zone.

22 °C, 72 °F