FB_BA_AC_ColTSuACtrl

The template represents the supply air temperature control of a cooler with the sequence controller Ctrl.

The sequence controller is enabled via the input variable bEn.

The sequence controllers are enabled for sequence control using the stSeqLink data and command structure. This is indicated by the variable bSeqActv.

	The initialization of the template takes place within the method FB_Init.

Block diagram

Syntax

FUNCTION_BLOCK FB_BA_AC_ColTSuACtrl EXTENDS FB_BA_View
VAR_INPUT
  bEn                 : BOOL;
  fSpTSuA             : REAL;
  fTSuA               : REAL;
  bSync               : BOOL;
  fSync               : REAL;
END_VAR
VAR_OUTPUT
  fY                  : REAL;
  bIsActive           : BOOL;
  bSeqActv            : BOOL;
END_VAR
VAR_IN_OUT
  stSeqLink           : ST_BA_SeqLink;
END_VAR
VAR_INPUT CONSTANT
  Ctrl                : FB_BA_SeqCtrl;
END_VAR

Inputs

Name	Type	Description
bEn	BOOL	Enable for the frequency controller Ctrl.
fSpTSuA	REAL	Setpoint of the supply air temperature.
fTSuA	REAL	Measured value of the supply air temperature.
bSync	BOOL	Pulse for synchronization of the sequence controller Ctrl.
fSync	REAL	Value for the synchronization of the sequence controller Ctrl.

Outputs

Name	Type	Description
fY	REAL	Control value output
bIsActive	BOOL	The sequence controller is the active one in the sequence control.
bSeqActv	BOOL	The sequence controller is implemented in the control sequence.

Inputs/outputs

Name	Type	Description
stSeqLink	ST_BA_SeqLink	The data and command structure is the link between the supply air temperature sequence controller Ctrl and the supply air temperature sequence controller TSeqLink of an air conditioning system.

Inputs CONSTANT

Name	Type	Description
Ctrl	FB_BA_SeqCtrl	The supply air temperature sequence controller Ctrl is the core of this template. It is responsible for the supply air temperature control of the cooler. The sequence controller is also part of the supply air temperature sequence control of an air conditioning system, see sample FB_BA_AC_SeqT. The data exchange within this sequence control takes place via the data and command structure stSeqLink. The global variable E_BA_AC_SeqNumber_T.eCooler gives the sequence controller its sequence number within the temperature sequence control.

Name

Type

Description

Ctrl

FB_BA_SeqCtrl

The supply air temperature sequence controller Ctrl is the core of this template. It is responsible for the supply air temperature control of the cooler.

The sequence controller is also part of the supply air temperature sequence control of an air conditioning system, see sample FB_BA_AC_SeqT. The data exchange within this sequence control takes place via the data and command structure stSeqLink.

The global variable E_BA_AC_SeqNumber_T.eCooler gives the sequence controller its sequence number within the temperature sequence control.

Requirements

Development environment	Necessary function
TwinCAT from v3.1.4024.35	TF8040 \| TwinCAT Building Automation from V5.0.0.0