[TCasCtr21] Temperature cascade controller, supply air setpoint high/low and for energy recovery
Program block, name / node subtype: [TCasCtr21] Temperature cascade controller, supply air setpoint high/low and for energy recovery
Library hierarchy: Ventilation and air conditioning functions
Family: TCtr
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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 cascade control.
Calculates the supply temperature setpoints with a function block of type CAS_CTR.
Maps its inputs and outputs to BACnet with multiple value objects.
The calculated supply temperature setpoints are limited to a minimum and a maximum.
You can select the calculation method of the temperature setpoint for the energy recovery. It is either equal to the heating or cooling supply temperature setpoint and depends on the present direction of the control action (CAS_CTR.SelSpErc=0, preset), or equal to their average (CAS_CTR.SelSpErc=1).
An analog calculated value can be read from the device chart of a room unit.
Name | Description | Type | Alarm / Notification class | Trend / Type |
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CasCtr | Cascade controller | CAS_CTR: Cascade controller | N/A | N/A |
Gain | Gain | ACnfVal: Analog configuration value | No | No |
Tn | Integral action time Tn | ICnfVal: Integer configuration value | No | No |
SpTSuMax | Maximum supply air temperature setpoint | ACnfVal: Analog configuration value | No | No |
SpTSuMin | Minimum supply air temperature setpoint | ACnfVal: Analog configuration value | No | No |
PrSpHiT | Present setpoint high for room temperature | ACalcVal: Analog calculated value | No | No |
PrSpLoT | Present setpoint low for room temperature | ACalcVal: Analog calculated value | No | No |
PrSpHiTSu | Present setpoint high for supply air temperature | ACalcVal: Analog calculated value | No | No |
PrSpLoTSu | Present setpoint low for supply air temperature | ACalcVal: Analog calculated value | No | No |
PrSpErcTSu | Present setpoint energy recovery for supply air temperature | ACalcVal: Analog calculated value | No | No |
PrSpTSu | Present setpoint supply temperature | ACalcVal: Analog calculated value | No | No |