Primary States (Exhaust Damper Control) - Metasys - Johnson Controls - LIT-12011147 - Software Application - Controller Configuration Tool - 13.1

Controller Tool Help
Product
Controls > Control Tools > Controller Configuration Tool
Document number
LIT-12011147
Version
13.1
Revision date
2019-12-04

  • Close: Set the Percent Cmd to 0%.

  • Open: Set the Percent Cmd to 100%.

  • Hold: Hold the current position.

  • Control: Adjust the Percent Cmd output to maintain the flow at the desired flow setpoint.

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

  • Box Flow Test: Set the Damper Percent Cmd to the Box Flow Test Position.

Table 1. Exhaust Damper Control Command Hierarchy
Mode Flow Reliable Non-Zero Setpoint State
Open * * Bypass
Close * * Bypass
Hold * * Hold
Control * FALSE Bypass
FALSE TRUE Control Flow Unreliable
TRUE TRUE Control Flow Reliable
Box Flow Test * * Bypass
Failsoft * * Bypass