The DXR2 room automation station for central weather station can process measured values for outside temperature, precipitation, wind, and relative air humidity and provides the weather information to the widest range of applications or room operator units.
The function is part of application types for central functions and can be loaded to a DXR2.E/M18.
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WS | Weather station |
| AS | Room automation station |
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| CAS | Central automation station for weather station |
Figure: Plant diagram for weather station automation station
The following weather information can be read on DXR2 for weather stations:
Sensor | Inputs | Information is used for |
|---|---|---|
Outside air temperature | LG-Ni1000 | Application: Seasonal compensation Display on the room operator unit |
Precipitation | Binary input (NO contact) | Application: Precipitation protection for awnings Application: Frost protection for blinds |
Wind | 0… 10 V | Application: Wind protection for facade products |
Relative humidity | 0… 10 V | Display on the room operator unit |
Seasonal compensation
The seasonal compensation application adjusts the room temperature setpoints for Comfort heating and Comfort cooling based on outside temperature.
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Sp | Setpoint for comfort |
| TOa | Outside temperature |
SpHiCCmf | Setpoint cooling high for comfort |
| TOaLoC | Outside air temperature low for cooling |
SpLoCCmf | Setpoint cooling low for comfort |
| TOaHiC | Outside air temperature high for cooling |
SpHiHCmf | Setpoint heating high for comfort |
| TOaLoH | Outside air temperature low for heating |
SpLoHCmf | Setpoint heating low for comfort |
| TOaHiH | Outside air temperature high for heating |
Figure: Seasonal compensation
Description | Name | Default value |
|---|---|---|
Setpoint cooling high for comfort | SpHiCCmf | 26 [°C] |
Setpoint cooling low for comfort | SpLoCCmf | 24 [°C] |
Outside air temperature high for cooling | TOaHiC | 32 [°C] |
Outside air temperature low for cooling | TOaLoC | 26 [°C] |
Setpoint heating high for comfort | SpHiHCmf | 23 [°C] |
Setpoint heating low for comfort | SpLoHCmf | 22 [°C] |
Outside air temperature high for heating | TOaHiH | 31 [°C] |
Outside air temperature low for heating | TOaLoH | 25 [°C] |
Wind protection for all facade products
The application function reads the values from the wind sensor and attenuates the value using switch on and off delays. The resulting value is then compared to the configured limit values. In the event a limit value is breached, the blinds products are deployed to a configured position. A position can also be configured for a sensor fault as well.
CAUTION!
The permissible limit value for switch on and switch off point must be configured as per the design value of the installed shading products.
Description | Name | Default value |
|---|---|---|
Switch-on point | SwiOnPt | 7 [m/s] |
Switch-off point | SwiOffPt | 5 [m/s] |
Switch-on delay protection function 0...300 [min] | DlyOnPrt | 0 [min] |
Switch-off delay protection function 0...300 [min] | DlyOffPrt | 20 [min] |
Command on limit exceed 1:None | CmdLmExc | 2:Open |
Command on sensor fault 1:None | CmdSenFlt | 2:Open |
Frost protection for blinds
The function is used to protect blinds or other facade products from mechanical damage caused by icing. The application function reads the values of the outside temperature sensor and precipitation detector. Frost protection is activated if the outside temperature drops below a set limit and precipitation is reported.
In the event of a frost warning, the blinds products are deployed to a configured position. A position can also be configured for a sensor fault as well.
Frost protection is automatically reset if no precipitation is reported during a configured period or the outside air temperature is above the limit value during a configurable period.
Description | Name | Default value |
|---|---|---|
Switch-on point ▶Limit value to trigger frost protection, only when precipitation is present. | SwiOnPt | 3 [°C] |
Switch-off point 1 ▶Reset temperature 1, only if there is no precipitation. | SwiOffPt1 | 7 [°C] |
Switch-off point 2 ▶Reset temperature 2, only if there is precipitation. | SwiOffPt2 | 10 [°C] |
Switch-on delay protection function | DlyOnPrt | 100 [s] |
Switch-off delay protection function ▶Frost protection delay, if no precipitation exists and the reset temperature 1 is exceeded. | DlyOffPrt | 10 [h] |
Switch-off delay reset ▶Switch-off delay for frost protection if reset temperature 2 is exceeded. | DlyOffRst | 10 [h] |
Command on limit exceed 1:None | CmdLmExc | 2:Open |
Command on sensor fault (Frost protection monitor) Note: Sensor fault precipitation must be configured at CenPcpPrt11. 1:None | CmdSenFlt | 1:None |
Precipitation protection
function for awnings
Use the function to protect awnings and other facade products against moisture. The application function reads the values from the precipitation detector and attenuates the value using switch on and off delays. The precipitation warning resets automatically after the switch-off delay expires. In the event of a precipitation warning, the awnings are deployed to a configured position. A position can also be configured for a sensor fault as well.
Description | Name | Default value |
|---|---|---|
Switch-on delay protection function 0...18000 [s] | DlyOnPrt | 100 [s] |
Switch-off delay protection function 0...50 [h] | DlyOffPrt | 3 [h] |
Command on limit exceed 1:None | CmdLmExc | 1:None |
Command on sensor fault 1:None | CmdSenFlt | 1:None |
CAUTION!
The factory settings for DXR2 facade protection are designed for blinds products with active frost protection (temperature & precipitation). As a result, the factory setting for the precipitation function is switched off and switched on for frost protection. The configuration must be changed as follows when using awnings:
Frost protection function. | Command on limit exceed | CmdLmExc | 1:None |
Precipitation protection | Command on limit exceed | CmdLmExc | 2:Open |