Primary States (Cooling Staged Outputs with Dehumidification) - 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 Cooling Percent Cmd is set to 0%. The MSC module observe any minimum on and minimum off times.

  • Max: The Cooling Percent Cmd is set to 100%.

  • Limited Max: The Cooling Percent Cmd is opened to the Limited Max Position. This state may be used for unoccupied cooling.

  • Hold: Hold the outputs at their current position.

  • Instant Shutdown: Turn everything off. The Cooling Percent Cmd is set to 0%. The MSC module does not observe any minimum on and minimum off times.

  • T Control: Adjust the cooling device to control the Process Variable. If the Process Variable is reliable, the module controls the output to maintain the Setpoint. The Cooling Percent Cmd is adjusted between 0% and 100%.

  • H Control: Adjust the cooling device to control the humidity. If the relative humidity sensor is reliable, the module controls the output to maintain the humidity at the dehumidification setpoint. The Cooling Percent Cmd is adjusted between 0% and 100%.

Table 1. Cooling Staged Outputs with Dehumidification Command Hierarchy

Proof of Airflow

Mode

PID Tuning Reset

PID Tuning Reset

Fault

*

*

Instant Shutdown

Not (Fault)

Instant Shutdown

Instant Shutdown

Off

Off

Max

Max

Hold

Reset 1st PID

T Control

Hold

Reset 2nd PID

H Control

Hold

*

Hold

H Control

H Control

T Control

T Control

Limited Max

Limited Max