The DXR2 room automation station for emergency control, receives emergency signals (e.g. fire or evacuation) via digital inputs and takes over control of the electrical and mechanical installations for lighting, facade, and HVAC in a the building as long as the various supply and room automation components remain undamaged.
CAUTION!
It is the Danger management system, and not Desigo room automation, that is responsible for fire detection and evaluation of the correct HVAC emergency operating modes for a fire section and primary plants.
WARNING
As a consequence, room automation fire solutions are only used on non-critical applications with a limited risk to health and risks,
For critical application, an individual permit by the fire authorities on site must be acquired for a specific project.
CAUTION!
The configurable Desigo room automation can switch all available luminaires to a specified value at the highest priority during an emergency. This is not emergency lighting or evacuation route control, but rather is only a supporting measure during an emergency to supply all rooms with the maximum brightness.
The function is part of application types for central functions and can be loaded to a DXR2.E/M18.
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| |||
Emg | Emergency signal source for HVAC, lighting, and blinds |
| AS | Room automation station |
| CAS | Central automation station for emergency control | ||
Figure: Plant diagram for emergency control automation station
The following input signals can be read on DXR2 for emergency controls.
Command | Inputs | Information is used for |
|---|---|---|
Facade emergency control | Digital (open contact) | Application: Central emergency functions shading products drives all facade products to a configurable position at the highest priority |
Lighting emergency control | Digital (open contact) | Application: Central emergency function lighting switches all luminaires in the building at the highest priority |
HVAC emergency shutdown | Digital (open contact) | Application: Central HVAC emergency mode switches off air supply |
HVAC negative pressure (extract air) | Digital (No contact) | Application: Central smoke extraction extract air |
HVAC positive pressure (supply air) | Digital (No contact) | Application: Central smoke extraction supply air |
Facade emergency control
During an emergency, all facades can be deployed to a configurable position via an digital input. The command is carried out at the highest priority and cannot be locally overridden in the room or from another central operation.
The facade or individual parts thereof can only be manually or automatically operated after resetting this digital command.
The emergency position of the facade can be configured.
Description | Name | Default value |
|---|---|---|
Central emergency for shading command value: 1:Open | CenEmgShdCmdv | 1:Open |
The application repeats the command cyclically at the highest priority as long as the digital command for facade emergency control is active. The cycle can be configured.
Description | Name | Default value |
|---|---|---|
Cycle 0...60 [min] | Cycle | 15 [min] |
The command for facade emergency control can be delayed with three additional groups to control larger buildings or facades.
The delay can be configured for each of the three additional groups.
Description | Name | Default value |
|---|---|---|
Central emergency for shading delay 1 0...7200 [s] | CenEmgShdDly1 | 10 [s] |
Central emergency for shading delay 2 0...7200 [s] | CenEmgShdDly2 | 20 [s] |
Central emergency for shading delay 3 0...7200 [s] | CenEmgShdDly3 | 30 [s] |
Lighting emergency control
All luminaires can be controlled during an emergency via a digital command. The command is carried out at the highest priority and cannot be locally overridden in the room or from another central operation.
Lighting can only be manually or automatically operated after this digital command is reset.
The emergency lighting control can be configured.
Description | Name | Default value |
|---|---|---|
Emergency lighting level 1:Off | EmgLgtLvl | 8:On |
The application repeats the command cyclically at the highest priority as long as the digital command for lighting emergency control is active. The cycle can be configured.
Description | Name | Default value |
|---|---|---|
Cycle 0...60 [min] | Cycle | 15 [min] |
HVAC emergency shutdown
During an emergency, air HVAC devices in the room can be controlled via a digital command. The command is carried out at the highest priority and cannot be locally overridden in the room or from another central operation.
HVAC plants can only be manually or automatically operated after this digital command is reset.
All HVAC devices in the rooms are switched off if the digital command for HVAC emergency shutdown is activated.
The function offers a test parameter that supports tests emergency reactions regardless of digital input conditions on the fixed wired interface.
Description | Name | Default value |
|---|---|---|
HVAC emergency test 1:None | TstHvacEmg | 1:None |
HVAC negative pressure
In addition to HVAC emergency shutdown, all extract air VAV in the rooms can be used to extract smoke with negative pressure via another digital command. The command is carried out at the highest priority and cannot be locally overridden in the room or from another central operation.
HVAC devices can only be manually or automatically operated after this digital command is reset.
All extract air VAV is controlled in the room to a configured air flow if the digital command is activated for this type of HVAC smoke extraction. The value can be configured separately for all extract VAV in the room:
Description | Name | Default value |
|---|---|---|
Extract air VAV smoke control air volume flow setpoint | VavExSpAflSmk | 50 [m3/h] |
The function offers a test parameter that supports tests emergency reactions regardless of digital input conditions on the fixed wired interface.
Description | Name | Default value |
|---|---|---|
HVAC emergency test 1:None | TstHvacEmg | 1:None |
The function can only be used as a supplement to use the air supply system in support of extracting smoke in the rooms with VAV extract air as long as the associated components are still operational.
HVAC positive pressure
In addition to HVAC emergency shutdown, all supply air VAV in the rooms can be used to extract smoke with positive pressure via another digital command. The command is carried out at the highest priority and cannot be locally overridden in the room or from another central operation.
HVAC devices can only be manually or automatically operated after this digital command is reset.
All supply air VAV is controlled in the room to a configured air flow if the digital command is activated for this type of HVAC smoke extraction. The value can be configured separately for all supply air VAV in the room:
Description | Name | Default value |
|---|---|---|
Supply air VAV smoke control air volume flow setpoint | VavSuSpAflSmk | 50 [m3/h] |
The function offers a test parameter that supports tests emergency reactions regardless of digital input conditions on the fixed wired interface.
Description | Name | Default value |
|---|---|---|
HVAC emergency test 1:None | TstHvacEmg | 1:None |
The function can only be used as a supplement to use the air supply system in support of extracting smoke in the rooms with VAV extract air as long as the associated components are still operational.
HVAC purge
All supply air and extract VAV in the rooms can be used to purge room air if both digital commands are activated together for HVAC positive and negative pressure. The command is carried out at the highest priority and cannot be locally overridden in the room or from another central operation.
HVAC devices can only be manually or automatically operated after this digital command is reset.
All supply air VAV and extract VAV are controlled in the room to a configured air flow if the digital commands are activated for this type of HVAC purge. The value can be configured separately for all supply air and extract air VAV in the room.
HVAC emergency matrix
HVAC emergency shutdown | HVAC negative pressure | HVAC positive pressure | Resulting HVAC emergency function |
|---|---|---|---|
On | Off | Off | Emergency shutdown of all rooms connected to the group with VAV plants |
On | On | Off | Negative pressure in all rooms connected to the group with VAV plants |
On | Off | On | Positive pressure in all rooms connected to the group with VAV plants |
On | On | On | Purge in all rooms connected to the group with VAV plants |