Primary States (Damper Control with Low Limit) - Metasys - Johnson Controls - LIT-12011147 - Software Application - Controller Configuration Tool

Primary States (Damper Control with Low Limit) - Metasys - Johnson Controls - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Product

Controls > Control Tools > Controller Configuration Tool

Document number

LIT-12011147

Version

15.0

Revision date

2022-11-18

Open: Sets the output for maximum outdoor air. The Percent Cmd is set to 100%.
Close: Sets the output for zero outdoor air. The Percent Cmd is set to 0%.
Min: Sets the output for minimum outdoor air. The Percent Cmd is set to Minimum OA Pos.
Hold: Keeps the outputs at their current position. If the Output Overridden is true, then the Output Position input is passed to the Cooling Percent Cmd.
Control Econ: Adjusts the output to control the Process Variable. The Percent Cmd is adjusted between Minimum OA Pos and 100%.
Control Econ Limit: Adjusts the output to control the Low Limit Process Variable. The Percent Cmd is adjusted between Minimum OA Pos and 100%.

Table 1. Damper Control with Low Limit Command Hierarchy
FSCS OAD Cmd	Proof Of Airflow	Process Variable Is Reliable	Mode	PID Tuning Reset	State
Open	*	*	*	*	Open
Close	*	*	*	*	Close
Auto	*	*	Hold	Reset 1st PID	Control Econ Limit
	Fault	*	*	*	Close
	FALSE	*	*	*	Close
	TRUE	TRUE	Close	*	Close
			Open	*	Open
			Min	*	Min
			Hold	*	Hold
			Control Econ	*	Control Econ
			Control Econ Limit	*	Control Econ Limit
		FALSE	*	*	Close

Table 2. Damper Control Command Hierarchy
Mode	State
Close	Close
Open	Open
Min	Min
Hold	Hold
Control Econ	Control
Control Econ Limit	Control

Table 3. Limit Control Command Hierarchy
Mode	State
Control Econ Limit	Close
Hold	Hold
Close	No Limit Control
Open	No Limit Control
Min	No Limit Control
Control Econ	No Limit Control