Basic Documentation

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Siemens Flush-mount room sensors AQR253... AQR257... CE1P1411en
Building Technologies Functionality / Use 2013-04-17
5 Functionality / Use
5.1 Basics
5.1.1 System environment
For engineering and commissioning, sound knowledge of KNX networks as well as
sufficient knowledge of working with ETS, ACS790, or ABT depending on system
environment is a prerequisite.
System environments and associated tools:
System/Network
environment
Engineering and
commissioning tool(s)
KNX PL-Link ABT, SSA
KNX LTE-Mode Synco ACS790
KNX S-Mode ETS
• For ACS: An interface converter, e.g. OCI700 (part of service tool OCI700.1)
is required to connect a PC with USB interface to a KNX network.
• For ETS: An IP-interface, e.g. N148/22 (5WG1 148-1AB22), is required to
access a KNX network via internet protocol (IP).
• The base modules AQR257… are supplied with the physical address 0.2.255
(default address).
5.1.2 Engineering and commissioning documentation
We recommend documenting and storing all planning data and settings to ensure
easy reuse even after an extended period of time or change of responsibilities.
Clear documentation is required especially in case of calculated or customized
settings. In KNX S-Mode systems, ETS for example can be used for this purpose.
5.2 Purpose
The room sensor is used in heating, ventilating and air conditioning plants to
optimize comfort and energy consumption via demand-controlled ventilation.
The room sensor records:
• CO
2
concentration in rooms with varying occupancy due to time or number of
people such as in museums, movie theaters, offices, meeting rooms, class
rooms, auditoriums, hospitals, living spaces.
• Relative room humidity.
• Room temperature.
• A second room temperature for averaging, or floor or ceiling temperature.
The room sensor helps control:
• Room temperature via PID controller.
• Air quality
• Humidity
as well as
• Switching of electrical equipment
• Switching and dimming of lights
• Control solar protection systems
• Monitor window contacts
Prerequisites
Engineering and
commissioning
documentation