The controlled PRO system presence detectors from Steinel are now equipped with the KNX interface and are capable of performing the functions such as standard presence detection, controlling lighting with brightness control and controlling the HVAC system.
Online PR News – 03-October-2011 – – What is KNX?
KNX is the worldwide STANDARD for all applications in home and building control, ranging from lighting and shutter control to various security systems, heating, ventilation, air conditioning, monitoring, alarming, water control, energy management, metering as well as household appliances, audio and lots more. The technology can be used in new as well as in existing home and buildings.
This standard is based upon more than 20 years of experience in the market including its predecessors, EIB, EHS and Bati BUS. Over 200 member companies worldwide from different application domains have almost 7000 KNX certified product groups in their catalogues. The KNX Association has partnership agreements with more than 30,000installercompanies in 100 countries and more than 60 technical universitiesas well as over 150 training centres.For more information please refer to http://www.knx.org/knx/what-is-knx/
The controlled PRO system presence detectors from Steinel are now equipped with the KNX interface and are capable of performing the functions such as standard presence detection, controlling lighting with brightness control and controlling the HVAC system. These solutions can be interfaced with the KNX families of products are generally used for large-scale installations and have a field bus which provides them the facility of inter-connecting individual components for building automation services, Building Automation System and Home Automation Systems.
Therefore, the sensor after installation is generally controlled by a server with the ETS software which is capable of programming individual sensors from a remote location. This sensor can then be programmed for controlling services such as lighting, HVAC, alarms, surveillance systems, maintenance work and building protection etc.
KNX is used for interconnecting various devices (via twisted cable pairs, wireless link, 230 V mains power, IP/Ethernet). Data can then be communicated freely between individual components irrespective of the make or type of application. The various components can be configured or re-configured at any time to suit individual requirements of the site.
Two special IR remote controls are available as optional accessories for Steinel KNX enabled presence detector. These allow the user to make setting very easily for lighting, dimming as well as saving and retrieving up to four scenarios. Brightness measurement can be calibrated by remote control, detector parameters can be changed without using the ETS software and a test mode can be started and terminated. In the KNX version, the field bus on the remote server/ ETS software can read parameters changed by the IR remote control.
The following limit values apply for the cable lenghts within a line:
• Lengthof a linesegment max. 1000 m
• Distancebetween power supplyandbusdevices max. 350 m
• Distancebetween 2 power supplies incl. Chokes max. 200 m
• Distancebetweentwobusdevices max. 700 m
The Control Pro System presence detectors equipped with the KNX interface are capable of performing the following functions:-
1. Presence Detection
2. Controlling lighting with brightness control
3. Controlling HVAC systems
This function watches over a room. A signal is immediately sent out as soon as the presence of a person is reliably detected and also as soon as presence stops being detected. This watchdog function can, for example, be inhibited during the day and only enabled at night for a specific duration as well as over the weekend.
Controlling lighting with brightness control
Operating in relation to ambient brightness and the presence of persons, the lighting controller switches light ‘ON’ when it’s needed and ‘OFF’ again when it isn’t. Light is switched ‘ON’ when it’s needed thereby avoiding waste of energy
Controlling HVAC systems
Heating, ventilation and air-conditioning systems are controlled using the HVA output. This only switches systems ‘ON’ and ‘OFF’ in relation to persons being present because heating, ventilation and air-conditioning need to be provided even if daylight is sufficient. When a room is not being used any more, heating, ventilation and air-conditioning can be switched off to save energy and costs.
Presence detector operating modes One of the following operating modes needs assigning to the presence detector:
• Individual detector
• Master in parallel mode
• Secondary master in parallel mode
Individual detector Only one detector is installed in the room.
Master Presence detection zone can be extended by connecting as many as 4 additional presence detectors (slaves) to the master via the bus. The main detector ascertains overall presence (is a person present in at least one of the detection zones?), controls lighting, heating, ventilation and air-conditioning for the entire room and sends the relevant objects.
Slave A slave delivers the "Presence 'ON'" and "Presence 'OFF information to the main detector.
Main master in parallel mode As many as 4 secondary masters in parallel mode can be connected to a master in parallel mode. These provide independent lighting management with brightness control for their specific detection zone. The main detector ascertains overall presence (is a person present in at least one of the detection zones?), controls lighting, heating, ventilation and air-conditioning for the entire room and sends the relevant objects.
Secondary master in parallel mode A secondary master in parallel mode delivers its own detection zone's "Presence 'ON'" and "Presence 'OFF'" information to the main detector and provides presence-governed lighting management with brightness control for its specific detection zone.
Steinel offers both the PIR and the high frequency /ultrasonic / microwave presence detectors for the KNX platform. These are used for fine movements in conference rooms, office rooms, laboratories, class rooms and meeting areas so also for larger motions in corridors and aisles.
For Further Information Contact:
Pammvi Group of Companies