Primary States (Damper Control for Economizer) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02
Language
English
  • Pressurize: This mode opens the OAD and closes the RAD and EAD.

  • Depressurize: This mode opens the EAD and closes the RAD and OAD.

  • Close: This mode opens the RAD and closes the EAD and OAD.

  • Purge: This mode opens the EAD and OAD and closes the RAD.

  • Min OA: This mode puts the EAD and OAD to minimum position. The RAD is 100% - Min Pos.

  • Hold: This mode holds the dampers in their last position.

  • Ramp Min OA: This mode ramps the EAD and OAD to Min Pos at a controlled ramp rate. The RAD position is the complement of the EAD position.

  • Ramp Open: This mode ramps the EAD and OAD open at a controlled ramp rate. The RAD position is the complement of the EAD position.

  • T Control: This is the free cooling mode. The OAD is modulated to allow outdoor air for cooling purposes. The EAD position is the same as the OAD position, and the RAD position is the complement of the OAD position. The OAD and EAD modulate between the minimum position and 100%.

Table 1. Damper Control for Economizer Command Hierarchy

FSCS OAD Cmd 1

FSCS EAD Cmd1

FSCS RAD Cmd 11

PID Tuning Reset

Mode

State

!Auto

*

*

*

Pressurize

Pressurize

Auto

!Auto

*

*

Depressurize

Depressurize

Auto

Auto

!Auto

*

Close

Close

Auto

Auto

Auto

*

Purge

Purge

Auto

Auto

Auto

*

Min OA

Min OA

Auto

Auto

Auto

Reset 1st PID

Hold

T Control

Auto

Auto

Auto

*

Hold

Hold

Auto

Auto

Auto

*

Ramp Min OA

Ramp Min OA

Auto

Auto

Auto

*

Ramp Open

Ramp Open

Auto

Auto

Auto

*

T Control

T Control

1 The FSCS Cmds (OAD, EAD, RAD) are not used.