Primary States (Fan Return or Exhaust BSP Control) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help
Product
Controls > Control Tools > Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02

  • Off: The fan is off when the module is in this mode of operation.

  • Max: The return fan turns at its maximum speed. The Return Fan Percent Cmd output is set to 100%.

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

  • Hold: Hold the outputs at their current position.

  • BS-P Control: The return 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.

  • Failsoft: The return fan tracks the supply fan while in this mode of operation. Failsoft is a fault mode entered only if the pressure sensor is unreliable.

The following table describes the attributes used by the Fan Return or Exhaust BSP Control modules.

Table 1. Fan Return or Exhaust BSP Control Command Hierarchy

Mode

BSP Is Reliable

State

Off

*

Off

Min

*

Min

Max

*

Max

Hold

*

Hold

BS-P Control

TRUE

BS-P Control

FALSE

Failsoft