Attributes (Occupied Sequencing [Single Device]) - 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 Occupied Sequencing (Single Device) modules:

Table 1. Occupied Sequencing (Single Device) Attributes

Name

Description

Default Value

Control Status

Value fed back from the output controller PID. This is needed for the sequencer to determine what actions to take.

Normal

Set Name: Control Status

Fan Ready

Comes from the Start/Stop Sequencer, and indicates that the fans and dampers have been sequenced properly. This input must not be connected in a zone control system; it is only for a discharge air control system.

True

Fast Sequence Enabled

Indicates if a change to a Satisfied state should occur if a setpoint changes as described in the Setpoint Threshold input.

False

HC-STATE, HD-STATE, or PH-STATE (State)

Current state generated by the sequence.

Satisfied

See Primary States (Occupied Sequencing [Single Device]).

Heating Device

Used to tell the state machine if the module is a heating sequencer or a cooling sequencer. When this input is set True, the state machine is a heating sequencer, and when the input is set False, the state machine is a cooling sequencer.

False

Process Variable

Value that is compared to the setpoint and used to determine whether it is necessary to heat or cool.

13 °C, 55 °F

Setpoint

Contains the desired setpoint for the process variable to be controlled towards.

13 °C, 55 °F

Setpoint Threshold

Indicates how much the setpoint must change to cause a state transition to a Satisfied state from the T Control state.

1 °C, 2 °F