User Manual
Table Of Contents
- 1 Description
- 2 Table of contents
- 3 Ordering data
- 4 Technical data
- Dimensions
- General data
- Power supply for module electronics
- Wireless interface
- Digital inputs
- Digital outputs
- Analog inputs
- Analog outputs
- Test voltage
- Ambient conditions
- Certification
- Emitted interference in acc. with EN 61000-6-4
- Conformance
- Limitation of simultaneity, derating
- Tolerance of analog inputs and outputs
- 5 Safety regulations and installation notes
- 6 Local diagnostic and status indicators
- 7 Connect supply, actuators, and sensors
- 8 Basic circuit diagram
- 9 Connection example
- 10 Assignment of terminal points to the remote station
- 11 Antennas
ILB BT ADIO MUX...
Preliminary Preliminary Preliminary Preliminary
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11 Antennas
When installing two antennas, it is desirable to have a line of
sight between them wherever possible, as any obstacles
between the antennas will impair the connection.
The Fresnel zone, which extends around the direct
connecting line between transmitting and receiving
antennas, should also be taken into account. For an
optimum wireless connection, this zone must be free of
obstacles.
Figure 6 Fresnel zone
The radius of the Fresnel zone depends on the transmission
frequency and the distance between the transmitting and
receiving antennas. The radius corresponds to the minimum
height of the antenna mast if the terrain is flat.
Figure 7 Radius depending on the distance
Example: for a distance of 100meters, you must install the
antenna at a minimum height of 1.8meters. The Fresnel
zone can then be formed.
11.1 Omnidirectional antennas
Areas of application for omnidirectional antennas:
– Where the position of the transmitter and receiver may
change, e.g.,in moving applications
– In applications with no line of sight, because the signal
then travels from the transmitter to the receiver via
reflections
Assembly
Choose a location that provides a clear signal path in the
direction of the partner antenna. The ideal installation
location is the top of a mast or on a control cabinet. This
ensures that the antenna has the largest possible amount of
free space around it.
In this case, an omnidirectional antenna has almost uniform
directional characteristics over 360° on the horizontal plane.
Unfortunately, optimum installation of the antenna is not
always possible. If an omnidirectional antenna is mounted
on the side of a mast or control cabinet, specific distances
must be observed.
Figure 8 Antenna with preferred direction (1) and
antenna with substantially reduced range (2)
• In order to achieve a high transmission speed, observe
the Link Quality display during startup.
• Install the antennas in such a way that at least three
LEDs light up.
Depending on the system, occasional fluctuations in the
display may occur during operation.
r
d
1 2
A Antenna Antenna
B Mast or surface (diameter or width)
C Antenna distance = 3cm Antenna distance = 6cm