Primary States (Humidification Sequencing) - 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
  • No Humid: This is the initial state and the idle state for the humidification sequencer. The sequencer is in this state if either of the following occurs:

    • The humidification device is not responding and the Humidity Process Variable is greater or equal to the Humidity Setpoint or any of the two humidity sensors were unreliable and they both become reliable.

    • The Humidity Process Variable is less than the setpoint and the humidification output controller Control Status is Low.

  • Humidity Unreliable: This is the unreliable state. The sequencer is in this state if any of the two humidity sensors (process variable or discharge) become unreliable.

  • Normal Humid: This is the normal humidification state. The sequencer is in this state if the Humidity Process Variable is less than the Humidity Setpoint and the Discharge Humidity is less than the Discharge Humidity Setpoint.

  • Limited Humid: This is a limited humidification state. The sequencer transitions from Normal Humid to this state when the Discharge Humidity is higher than the Discharge Humidity Setpoint.