BAC_AC_ReHtr_01

Application

The call template BAC_AC_ReHtr_01 is used for controlling a reheater.

The main tasks of the template are:

The enable of the supply air temperature controller SuA_PID is formed in the template via an evaluation of the plant operation mode udiOpMod.

Interface

BAC_AC_ReHtr_01 1:

Plant diagram 01

BAC_AC_ReHtr_01 2:

Plant diagram 02

BAC_AC_ReHtr_01 3:

Block diagram

BAC_AC_ReHtr_01 4:

VAR_INPUT 

rSuAT      : REAL;
rSpHtg     : REAL;
udiPltStp  : UDINT;
udiOpMod   : UDINT;

rSuAT: Measured value supply air temperature

rSpHtg: Set value of the supply air temperature

udiPltStp: Plant start sequence steps. The plant steps are generated in the system start program BAC_AC_StartT_01.

udiOpMod: Plant operation mode. The plant operation mode is determined in the mode selection programBAC_AC_OpMod_01.

Program description

Instance

Type

Task

SuA_PID

BAC_AC_ReHtr_PID_01

Subtemplate supply air temperature control. The temperature control is analog via PID sequence controller.

Vlv

BAC_Uni_Vlv_01_13

Subtemplate for controlling an analog valve

Pu

BAC_Uni_Pu1st_01_189

Subtemplate for controlling a single-stage pump

Version history

Version number

Comments

1.0.1

First release