Appendix; The Knx Rf System - Gira 5110 00 Product Documentation

5 Appendix

5.1 The KNX RF system

Introduction
The Gira KNX RF system (RF = Radio Frequency) is based on a manufacturer-independent
KNX radio standard (868 MHz), with which existing KNX systems can be refitted or new
installations can be expanded simply using RF components. Mobile hand-held transmitters
allow easy operation of the intelligent KNX building functions via "remote control". KNX RF
push-button sensors can be mounted anywhere in which a control panel is required, no matter
whether that is on stone, concrete, wood or glass walls or on the surfaces of furniture.
KNX RF devices can be connected to wired KNX installations using media couplers. Additionally
or alternatively, suitable RF actuators can be activated and evaluated directly by RF
transmitters. Whilst TP or RF actuators are located where cables are present, cables are not
relevant during the mounting of KNX RF push-button sensors and hand-held transmitters, as
these Gira RF transmitters are battery-operated.
KNX RF components possess a transmit and receive module and are thus bidirectional. This
means that it is possible, for example, to implement status displays on the RF control panels, in
addition to the operating function, or to allow status feedback for actuators. In addition,
bidirectional communication makes ETS commissioning possible.
Gira KNX RF hand-held transmitters and KNX RF push-button sensors are battery-operated. To
prolong the life of the battery, the devices possess an energy-saving mode. After the last
operation or after an ETS programming operation, the devices switch automatically to the
energy-saving mode (semi-bidirectional operation) after a settable time. The devices temporarily
have no function. If an RF device is in energy-saving mode, this mode must be actively
terminated before a programming operation by the ETS is possible. This can usually be done by
pressing a button or the programming button. The same applies to the unloading of the
application program or reading out of the device information by the ETS.
i If energy-saving mode is active, the receiver of a semi-bidirectional RF device is switched
off. In consequence, the device cannot receive any telegrams, meaning that status
changes of group addresses cannot be tracked. In the case of hand-held transmitters or
push-button sensors which are configured to the button function "Switching - TOGGLE", it
can thus be necessary to press the button up to twice for the switching command (ON ->
OFF / OFF -> ON) to be switched correctly.
i The ETS requires the user to press the programming button if no direct access to the
devices is possible due to an active energy-saving mode.
Gira KNX RF devices correspond to the KNX standard "KNX RF1.R S-Mode". Devices of other
manufacturers, which meet the same standard, are intercompatible. Frequently, for marketing
reasons, different names or product designations are used for the same KNX RF system. The
designations named below usually indicate, if necessary also in combinations, products of the
same KNX standard.
- KNX RF1.R S-Mode
- KNX RF Ready S-Mode
- KNX RF 868 MHz
- KNX RF+
Approval and frequency use
KNX RF (KNX RF1.R) uses a frequency from the Europe-wide SRD band (SRD = Short Range
Device). Low-power radio applications are used in this approval-free frequency range. Besides
KNX RF, these include, for example, radio remote controllers, wireless microphones and
headphones or other simple data transmission systems. KNX RF devices are generally
approved and can thus be used in all the states recognising the standards and directives of the
European Union. In general, these include the EU and EFTA states.
Order No. 5110 00
Software "Media coupler / repeater"
Parameters
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