BAC_ErcIcPrt_02

Functional description

The template is used to protect an energy recovery unit from icing up.
On actuation of the HighLimit of the differential pressure sensor DiffPrssExhMonit a ramp function is activated, which generates an analog limit signal.
The limitation of the energy recovery results in thawing through the warm exhaust air flow.

Interface

System diagram

Block diagram

VAR_OUTPUT

rY        : REAL;

rY: Ramp signal output. If the HighLimit of the differential pressure sensor is not triggered, 100% is output at rY

VAR CONSTANT

PLT_NUM    : BYTE := 1;

PLT_NUM: all alarms and events of all plant components within a controller are included in a global alarm and event list. The assignment of events and alarms to a plant is defined by the assignment of a PLT_NUM plant number.
The recording and processing of an alarm from an aggregate or a device takes place within the templates by means of the alarm function block FB_BA_Alarm.
The evaluation of the alarms of a plant, e.g. for the generation of a collective message or for plant shutdown in case of relevant faults, takes place within the template BAC_PltAlm_01 by means of the function block FB_BA_AlarmPlt.
The evaluation of different plant events within the templates of a plant, takes place within the template BAC_PltComnMsg_01 by means of the function block FB_BA_ComnMsg.

Important! The assignment and evaluation of the alarms and events of a plant can only be done correctly if all templates of a plant have the same plant number!

The plant number can be assigned in the Project Builder in the parameter menu for the templates or via a column in the Excel import.

Program description

IO linking

Variables for linking with the terminals

Version history