[AhuAQualCtl21] Sensors, setpoints and air quality control for air handling unit
Program block, name / node subtype: [AhuAQualCtl21] Sensors, setpoints and air quality control for air handling unit
Library hierarchy: Ventilation and air conditioning equipment
Family: AhuAQualCtl
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Configurator
Program blocks are stored in the library without I/Os. Use the auto-create and auto-connect functions to create I/Os and/or to connect them to the interface blocks, e.g., R_A, CMD_B. Alternatively, take the I/Os from the folder containing the predefined I/Os in the library and/or from the plant and connect them to the interface blocks.
Performs air quality control and contains the setpoint for room air quality and the room air quality sensor.
The actual air quality control happens inside the "Air quality control" (program block of type AQualCtr21) and it considers the setpoint for minimum outside air (from the mixing dampers) and can issue a demand for fan full speed (that can switch the stage 2 of the fans).
A parameter in the program defines the influence on the plant behavior of an alarm or fault of the air quality sensor. It is preset so that the plant does not switch off in the event of an alarm or fault.
Name | Description | Type | Alarm / Notification class | Trend / Type |
|---|---|---|---|---|
AQualR | Room air quality | AI: Analog input | No | Yes, 3 |
SpAQualR | Setpoint for room air quality | ACnfVal: Analog configuration value | No | Yes, 4 |
AQualCtr | Air quality controller | [AQualCtr21] Air quality controller, control of the mixed air damper and 2nd fan speed | N/A | N/A |