Primary States (Heating Proportional Valve with DA-T Low Limit) - 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
  • Off: The Percent Cmd is set to 0%.

  • Max: Set the output for maximum heating. The Percent Cmd is set to 100%.

  • Limited Max: Set the Percent Cmd to the Limit Max Value input percentage.

  • Hold: Hold the Percent Command output at its current value. If the Output Overridden input is true, the Output Position input is passed to the Heating Percent Cmd.

  • Water Flush: Command the Percent Cmd to the Flush Position.

  • Control: Adjust the Percent Cmd to control the Process Variable (heating only). If the input PID Tuning Reset is true, the Reset Tuning input to the PID is set to true causing the PID to recalculate its tuning parameters. While that occurs, the Heating Percent Cmd is held at its last value.

  • Control Limit: Adjust the Percent Cmd to control the Low Limit Process Variable (heating only).

  • Failsoft: Set the Percent Cmd output to the Failsoft Value.

Table 1. Heating Proportional Valve with DA-T Low Limit Command Hierarchy

Mode

PID Tuning Reset

State

Off

*

Off

Max

*

Max

Limited Max

*

Limited Max

Hold

Reset 1st PID

Control Limit

Hold

*

Hold

Water Flush

&*

Water Flush

Control

*

Control

Control Limit

*

Control Limit

Failsoft

*

Failsoft