modelEnableDevices

Validation sequence for enabling plant devices

Information

This example validates Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.EnableDevices. It shows how to control devices when the plant is just enabled.

At 400 seconds, the plant becomes enabled and the initial plant stage is 1. Thus, the plant is enabled in chiller mode. The associated isolation valves, lead primary chiller and condenser water pumps are enabled. From 400 seconds to 2800 seconds, the chiller stage uChiSta equals the initial plant stage uIni thus it is in the plant enabling process.
At 1200 seconds, which it is still in the plant enabling process, the chilled water and condenser water pumps are proven on. Thus, the lead chiller becomes enabled.
At 2800 seconds, the plant enabling process is ended. Thus, the control after the moment becomes invalid.

Type	Name	Description
Buildings.Controls.OBC.ASHRAE.G36.Plants.Chillers.Generic.PlantEnable.EnableDevices	enaDev	Enable valves and pumps
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse	booPul	Enabled plant
Buildings.Controls.OBC.CDL.Logical.Not	not1	Logical not
Buildings.Controls.OBC.CDL.Integers.Sources.Constant	conInt	Stage 1, meaning it stages in chiller mode
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse	booPul1	Proven on pumps
Buildings.Controls.OBC.CDL.Logical.Not	not2	Logical not
Buildings.Controls.OBC.CDL.Logical.Sources.Constant	con	Disabled pump
Buildings.Controls.OBC.CDL.Integers.Sources.Constant	conInt1	Stage 2
Buildings.Controls.OBC.CDL.Integers.Switch	intSwi	Current stage
Buildings.Controls.OBC.CDL.Logical.Sources.Pulse	booPul2	Change stage