Screening Zones; Penetration Angle; Distance Between Receiver And Sources Of Interference - ABB i-bus KNX Product Manual

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i-bus KNX

4.2.2 Screening zones

It is important not to place the device in a place where the airwaves must go through a metallic
object as they create a screening zone where the receivers are not going to be able to receive
the EnOcean telegrams. This situation is shown in Figure 4.2a.
The situation of one of the receivers does not allow it to receive the transceiver telegrams. To
solve this situation the use of a additional Gateway outside the screening zone (Figure 4.2b) is
recommended.

4.2.3 Penetration Angle

This is the angle in which the airwaves reach a certain object they need to go through. The
transmission to the other side of the object would be better as this angle gets closer to 90º,
being this the best transmission situation.
In Figure 4.3a a receiver in a situation where the penetration angle is too close to 0º is shown.
The solution to that problem can be seen in Figure 4.3b using a gateway in a different position.

4.2.4 Distance between receiver and sources of interference

The distance between EnOcean receivers, as it is the ABB and other transmitters (e.g. GSM /
DECT / wireless LAN) or high frequency sources of interference (computers, audio and video
equipment) should be higher than 50 centimeters.
However, EnOcean transmitters can be installed next to any other high-frequency transmitters
without any problem.
ABB STOTZ-KONTAKT GmbH
Eppelheimer Straße 82, 69123 Heidelberg, Germany
 +49 (0) 6221 701 607
 +49 (0) 6221 701 724
EG/A 32.2.1
Figure 4.2 a) Screening zone b) Solution with a repeater
Figure 4.3 a) Penetration angle b) Solution with a repeater
www.abb.com/knx
Technische Helpline / Technical Support
 +49 (0) 6221 701 434 E-Mail: knx.helpline@de.abb.com
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