Attributes (Staged Box Heating Control) - 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 Staged Box Heating Control modules.

Table 1. Staged Box Heating Control Attributes

Name

Type 1

Description

Default Value

Control Band

V

Control band for the MSC.

0 °C, 0 °F

Control Status

 

Indicates current status of the controller for cooling or heating control.

Normal

Set Name: Control Status

Eff Minimum Off Time

V

Minimum off time to be used by the MSC.

120 Seconds

Eff Minimum On Time

V

Minimum on time to be used by the MSC.

120 Seconds

Eff Process Time Const

V

Contains the effective process time constant that is used by the MSC.

0 Seconds

Eff Process Variable

V

Contains the Process Variable to be used by the MSC.

22 °C, 72 °F

Failsoft Value

 

When the mode is set to Control and the process variable is unreliable, the output is cycled to maintain this percentage duty cycle.

0%

HeatingCooling

 

Configures the module to be compatible with either a heating or cooling source.

Heating

Set Name: HeatingCooling

Instant Shutdown

V

Contains the indication to the MSC to shut off all outputs instantly.

False

Limited Max Value

 

When the mode is set to this state, the output is cycled to maintain this percentage duty cycle.

100.0%

Max Capacity Fraction

 

Contains the ratio of the largest stage to the sum of all the stages.

1.0

Minimum Off Time

 

Indicates the Min Off duration for all stages.

120 Seconds

Minimum On Time

 

Indicates the Min On duration for all stages

120 Seconds

Mode

 

Mode requested by State Selection.

Off

Set Name: COM Staged Out

Output Overridden

 

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

False

Output Position

 

Provides the current Present Value of the output that this controller drives.

0%

Percent Cmd

 

Indicates the analog percent output on a scale of 0 to 100%.

0%

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

PMAC Period

V

Period used by the PMAC algorithm portion of the MSC.

30 Seconds

Process Units

 

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

°C, °F

Set Name: Unit

Process Variable

 

Control temperature. Either Zone temperature, discharge air temperature, return air temperature or preheat temperature may be connected to this input.

22 °C, 72 °F

Proof of Airflow

 

Specifies that when set to True, the controller operates as normal. When set to False, the controller performs as normal and an non-zero value is allowed to be output through the Percent Request output, but the outputs are not allowed to turn on. When set to Fault, the controller performs an instant shutdown.

True

Set Name: False/True/Fault

Setpoint

 

Contains the desired setpoint for the process variable to be controlled to when the mode is Control.

22 °C, 72 °F

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