AC Unit Controller

The AC Unit Controller function block is used to control air conditioning units.

Table of Contents


Inputs

The functionality of the Auto level for Mode, Fan speed and Airflow direction can be found in the instructions for the air conditioner used. Depending on the air conditioner, the number of available levels varies.

Abbreviation Summary Description Unit Value Range
Tg Toggles between On and Off - 0/1
On Set to On - 0/1
Off Set to Off Pulse: AC unit and Status output are switched off.
On: AC unit is switched off, Block is locked, all outputs are reset while input is on.
- 0/1
ϑt Target Temperature °
ϑc Current Temperature Input is only used for display in the user interface! -
Mode Mode 1-5 1 = Auto
2 = Heat
3 = Cool
4 = Dry
5 = Fan
Available modes can be set in the mode settings of the block.
- 1...5
Fan Fan speed 1-7 1 = Auto
2 = Silent
3 = Very Low
4 = Low
5 = Medium
6 = High
7 = Very High
Available fan speeds can be set in the fan speed settings of the block.
- 1...7
ADir Airflow direction up/down 1-8 1 = Auto
2- 6 = Position 1-5
7 = Swing
8 = No Swing
Available airflow directions can be set in the airflow direction settings of the block.
- 1...8
Rtd Reset to default Resets parameters and settings of the block to the default values as specified in the block preset. - 0/1
Dwc Door / window contact 0 = closed, 1 = open
If the device is turned on, it will be paused as long as one or more doors/windows are open.
- 0/1
Pt Pause timer Pauses the device for the duration set in parameter (Ptd). - 0/1
Ls Load shedding If the device is turned on, it will be paused as long as load shedding is active to avoid grid power peaks or similar. - 0/1
Sm Silent Mode When activated, fan speed is set, according to the 'Silent Mode Fan Speed' setting When deactivated again, the fan speed will be set back to the fan speed last defined by the Fan input or the app. - 0/1




Outputs

Abbreviation Summary Description Value Range
Status Device-Status 0 = Off, 1 = On 0/1
Mode Current Mode 1-5 1...5
Fan Fan speed 1-6 1...6
Adir Airflow direction up/down 1-7 1...7
ϑt Target temperature
ϑc Current temperature
AC API Connector Intelligent API based connector.
API Commands
-




Parameters

Abbreviation Summary Description Unit Value Range Default Value
Ptd Pause timer duration Starts with the falling edge of input (Pt). Keeps the device paused for the specified duration. s 0...∞ 7200
Hys Hysteresis Hysteresis for switching on/off. Only Applies when getting target temperatury by intelligent roomcontroller ° 0...∞ 0.5
O Target Offset Target-Temperature-Offset in relation to received target temperature. Only Applies when getting target temperatury by intelligent roomcontroller ° 0...∞ 1




Properties

Summary Description Unit Value Range Default Value
History Entries Number of entries in the control history.
0: History is disabled
Control history tracks relevant changes since program start.
- 0...100 20
Mode names Configure usage and naming of operating modes - - -
Airflow names Configure usage and naming of airflow-directions - - -
Fanspeed names Configure usage and naming of fanspeeds - - -
Silent Mode Fan Speed Fan Speed which is set when silent mode is activated - - -
Default Fan Speed Fan Speed which is set when the AC is switched off - - -
Default Airflow Airflow-direction which is set when the AC is switched off - - -
Default Target Temperature Target Temperature which is set when the AC is switched off (-1 = Retain Last Value) ° -1...∞ -1




Combining AC Unit Controller and Intelligent Room Controller

The combination of the Intelligent Room Controller and AC Unit Controller blocks enables the automatic operation of your air conditioner.

Eco Mode

In Eco Mode, the air conditioner operates as energy-efficiently as possible while preventing the room from overheating. Once the room has been cooled by the configured hysteresis, the air conditioner automatically turns off. Eco mode is intended for times when no one is in the building.

Eco Max, Eco Min, ϑc values from the Intelligent Room Controller are used.

Comfort Mode

In Comfort Mode, the air conditioner maintains the desired temperature with minimal noise. If the comfort temperature is exceeded, it automatically begins cooling. Once the desired temperature is reached, it runs consistently at a low level to maintain the temperature. Comfort mode is intended for times when someone is in the building.

ϑcc, ϑch, ϑc values from the Intelligent Room Controller are used.


AC Unit Controller Integration in Intelligent Room Controller