steute RF I/O SW868-NET Instructions De Montage page 3

RF I/O SW868-NET
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Montage- und Anschlussanleitung / Funkschalter
Mounting and wiring instructions / Wireless switch
Instructions de montage et de câblage / Interrupteur de radio
Istruzioni di montaggio e collegamento / Interruttori di radio
Instruções de montagem e instalação / Interruptores de rádio frequência
Инструкции Монтаж и Коммутация / Переключатели c сигнальной технологией
English
of the entries independent from a switching signal. The time is set to
10,000 s as standard. The receiver must conform to the sWave.NET ®
protocol of the steute module.
Mounting / Wiring
The wireless switch should be mounted on an even surface. The wire-
less range accordingly depends on the local conditions. Thus, the radio
signal can be strongly affected by conductive materials. This also in-
cludes thin foils, e.g. aluminium laminations on insulation materials. A
test with the field strength indicator swView 868, mat.-No. 1190393,
should be carried out. Typical wireless ranges are:
Sight connection outside: approx. 450 m
Sight connection inside: approx. 50 m
Design of wireless range
Because radio signals are electromagnetic waves, the signal is
attenuated on its way from the transmitter to the receiver. This
means that the electrical as well as the magnetic field strengths
decrease inversely proportional to the squared distance of transmit-
ter and receiver (E,H~1/r²). In addition to this natural restriction of
the wireless range, further interference factors occur: Metal parts,
e. g. armours in walls, metal foils of thermal insulations or vapour
deposited metal layer heat protection glass reflect electromagnetic
waves. Therefore, a so-called deadspot can be found behind them.
Indeed, radio waves are able to penetrate walls, but the attenua-
tion increases even more than in the free field. Penetration of radio
waves:
wood, gypsum, glas uncoated
brick stone, press boards
armoured concrete
metal, aluminium lamination
Mounting notes
Mounting notes for inductive non-flush inductive proximity sensors se-
ries RF.
Free field
With inductive proximity sensors, the function principles is based on
the influence of an stray electromagnetic field. Because this stray field
does not only interfere with the to be dectected object, but also with
other conductive objects and also interferes with other inductive sen-
sors, some mounting conditions must be observed. Opposite the active
surface, the minimum distance to a conductive surface is 3 x s n .
90...100%
65...95%
10...90%
0...10%
Free space around a cylindric non-flush proximity sensor and distance
to an opposite conductive surface.
Reciprocal influence
Should inductive proximity sensors of the same design be operated
side by side, the oscillators for generating an electromagnetic field are
interacting to each other. This effect is undesirable and can lead to
faulty operations. In order to avoid this, the pictured distances of the
adjacent proximity sensors must be observed.
Mechanical strength
Tightening torque
Though the proximity sensors in threaded design look like bolts, only
low tightening torques may be applied.
M12: 10 Nm
M18: 25 Nm
M30: 75 Nm
Front surface
The front surface must not be used as an end stop because the sensor
partly consists of ferrite and is very shock-sensitive.
A active surface
d diameter
s n rated switching
distance
1 free space