Primary States (Fan Relief BSP for UL-864-UUKL) - 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 fan is off when the module is in the Off mode of operation.

  • Min: The analog fan output (Relief Fan Percent Cmd) is zero, and the fan control output (Relief Fan OnOff) is on when the module is in the Min mode of operation.

  • BS-P Control: The relief fan controls the building static pressure when the module receives this command. The module operates in the BS-P Control mode if the building static pressure is reliable.

  • Emergency BS-P Control: The relief fan controls the Emergency BSP Setpoint when the module receives this command. The module operates in the Emergency On state if the pressure sensor is unreliable and the Emergency On Percent Cmd is issued to the Fan Percent Cmd output.

  • Emergency Off: The fan is off and the priority is set to 1 or 2 depending on the FSCS status.

  • Emergency On: When the mode is Emergency BS-P Control or the FSCS RF Cmd is On and the pressure sensor is not reliable, the module enters this state, turns on the fan, and issues the Emergency On Percent Cmd to the fan percent command.

  • Hold: The module operates in this state when the output priorities are not 16.

Table 1. Fan Relief BSP for UL-864-UUKL Command Hierarchy

Mode

BSP Is Reliable

FSCS RF Cmd

PID Tuning Reset

State

*

*

Off

*

Off

*

TRUE

On

*

BS-P Control

*

FALSE

On

*

Emergency On

Hold

*

Auto

Reset 1st PID

BS-P Control

Off

*

Auto

*

Off

Min

*

Auto

*

Min

BS-P Control

TRUE

Auto

*

BS-P Control

FALSE

Auto

*

Off

Emergency BS-P Control

TRUE

Auto

*

BS-P Control

FALSE

Auto

*

Emergency On

Emergency Off

*

Auto

*

Off

Hold

*

Auto

*

Hold