Primary States (Heating FBPD 2 Position 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: Turn everything off. The Damper Percent Cmd is set to 0%.

  • Max: Open the heating valve. The Damper Percent Cmd is set to 100%.

  • Limited Max: Open the heating valve. Damper Percent Cmd is set to the Limited Max Value.

  • Hold: Hold the outputs at their current position. If the Output Overridden is true, then the Output Position input is passed to the Heating Percent Command.

  • Water Flush: Open the heating valve. The Damper Percent Cmd is set to 100%.

  • Control: Open the heating valve and adjust the damper output to control the Process Variable. If the Process Variable is reliable, the module controls the output to maintain the Process Variable at the Setpoint. The Damper Percent Cmd is adjusted between 0% and 100%. 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 Damper Percent Cmd and Valve OpenClose is held at its last value.

  • Control Limit: Open the heating valve and adjust the output to control the Low Limit Process Variable. If the Low Limit Process Variable is reliable, the module controls the output in order to maintain the Low Limit Process Variable at the Low Limit Setpoint. The Damper Percent Cmd is adjusted between 0% and 100%.

  • Failsoft: Set the output to the Failsoft value.

  • Cooling: Set the damper output for cooling operation. The Damper Percent Cmd is set to 100% when the Cooling Coil Location is the same path as heating and 0% when in separate path from heating.

Table 1. Heating FBPD 2 Position Valve with DA-T Command Hierarchy

Mode

PID Tuning Reset

State

Off

*

Off

Max

*

Max

Limited Max

*

Limited Max

Hold

Reset 1st PID

Control Limit

Hold

*

Hold