modelBoundaryMap

Block that checks if the inputs are within the characteristic map

Information

Given an input of TCon and TEva, the model returns false if the given point is outside of the given operational envelope.

The maximal and minimal TCon depend on TEva and are defined by the upper and lower boundaries in form of 1Ds-Tables.

The maximal and minimal TEva values are obtained trough the table and are constant.

For the boundaries of the TCon input value, a dynamic hysteresis is used to ensure a used device will stay off a certain time after shutdown.

This is similar to the hysteresis in a pressure-based safety control, which prevents operation outside this envelope in real devices.

Type	Name	Description
Real[:,2]	tab	Table for boundary with second column as useful temperature side
Modelica.Units.SI.TemperatureDifference	dT	Delta value used to avoid state events when used as a safety control
Boolean	isUppBou	=true if it is an upper boundary, false for lower

Type	Name	Description
Modelica.Blocks.Interfaces.BooleanOutput	noErr	=false when an error occurs
Modelica.Blocks.Interfaces.RealInput	TAmbSid	Temperature at ambient side
Modelica.Blocks.Interfaces.RealInput	TUseSid	Useful temperature side

Type	Name	Description
Modelica.Blocks.Tables.CombiTable1Ds	tabBou	Table with envelope data
Modelica.Blocks.MathBoolean.Nor	nor	=true if the operational envelope is not violated
Modelica.Blocks.Logical.Hysteresis	hysLef	Hysteresis for left side of envelope
Modelica.Blocks.Logical.Hysteresis	hysRig	Hysteresis for right side of envelope
Modelica.Blocks.Sources.Constant	conTAmbSidMin	Constant minimal temperature of ambient temperature side
Modelica.Blocks.Sources.Constant	conTAmbSidMax	Constant maximal temperature of ambient temperature side
Modelica.Blocks.Math.Add	subMax	Actual minus maximal ambient side temperature
Modelica.Blocks.Math.Add	sub	Minimal minus current ambient side temperature
Modelica.Blocks.Math.Add	subBou	Subtract boundary from current value depending on lower or upper boundary
Modelica.Blocks.Logical.Hysteresis	hysBou	Hysteresis for temperature limit

August 3, 2026, by Michael Wetter:
Removed duplicate HideResult annotation.
November 17, 2025, by Michael Wetter:
Corrected typo in annotation.
This is for Buildings, #4406.
October 2, 2022 by Fabian Wuellhorst:
Adjusted based on IPBSA guidelines #1576)
November 26, 2018; by Fabian Wuellhorst:
First implementation (see issue AixLib #577)