Jung 3181-1 Series User manual
Standard / Universal automatic switch 1.1 m
Universal automatic switch 1.1 m
Art. no.: ..3181-1..
Standard automatic switch 1.1 m
Art. no.: ..3181..
Operating instructions
1 Safety instructions
Electrical devices may only be mounted and connected by electrically skilled persons.
Serious injuries, fire or property damage possible. Please read and follow manual fully.
Do not press on the sensor window. Device can be damaged.
The device is not suitable for use as a burglar alarm or other alarm.
Caution. Damage to sensors may result due to high thermal radiation. Avoid direct sunlight pen-
etration in the sensor window.
These instructions are an integral part of the product, and must remain with the end customer.
2 Battery safety instructions
This device or its accessories are supplied with batteries in the form of button cells.
DANGER! Batteries can be swallowed. This can lead directly to death by suffocation. Danger-
ous substances may cause severe internal burns leading to death within 2 hours.
Keep new and used batteries away from children.
Do not use devices if the battery compartment does not close securely and keep away from
children.
If you suspect that a battery has been swallowed or is in any orifice of the body, seek immediate
medical attention.
WARNING! Improper handling of batteries can result in explosion, fire or chemical burn due to
leakage.
Do not heat or throw batteries into fire.
Do not reverse polarity, short-circuit or recharge batteries.
Do not deform or disassemble batteries.
Replace batteries only with an identical or equivalent type.
Remove empty batteries immediately and dispose of in an environmentally friendly manner.
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3 Device components
Figure1: Device components
Figure2: Adjuster
(1) Bus coupler 3 (accessory)
(2) Frame
(3) Motion detector
(4) Sensor window
(5) Slide switch (cover)
(6) Adjuster Sens.
(7) Slide switch element
(8) Programming button
4 Function
System information
This device is a product of the KNX system and complies with the KNX directives. Detailed tech-
nical knowledge obtained in KNX training courses is a prerequisite to proper understanding.
The function of this device depends upon the software. Detailed information on loadable soft-
ware and attainable functionality as well as the software itself can be obtained from the manu-
facturer´s product database.
Planning, installation and commissioning of the device are carried out with the aid of KNX-certi-
fied software. Full functionality with KNX commissioning software version ETS4.2 and higher.
An updated version of the product database and technical descriptions are available on our In-
ternet website.
Intended use
– Requirement-oriented control of lighting and other electrical consumers in interior rooms
– Mounting on bus coupler 3 (accessory)
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Recommendation: Use air-tight appliance boxes.
Product characteristics
– Automatic switching of light, depending on heat motion and ambient brightness
– 2 PIR sensors
– Detection field 180°
– Integrated brightness sensor
– Adjustable switch-off brightness
– Adjuster for manual adjustment of sensitivity
– Output functions: Switching, value transmitter, light scene extension, staircase function,
switching with forced position, operating mode setting for room temperature controller
– Extension of the detection field by way of operating several devices as main unit or exten-
sion unit
– Status LED
– Manual switching on the device
– Detection field can be dimmed by 50%
Additional characteristics of "Universal" version:
– Manual operation with IR remote control possible (accessories)
– 5 function blocks for motion detection each with 2 outputs
– Function blocks switchable, e.g. for day/night operation
– Brightness sensor function with 3 limiting values
– Alarm when unplugging from the bus coupler
– Temperature measurement
Motion detection function
The detection of movements is done through the "passive infrared" principle ("PIR"). The device
generally reacts to heat radiation changes within its detection field. This is achieved with the
help of the so-called PIR sensors, which are highly sensitive in the infrared range. The geo-
metry of the detection field is ensured by a lens system that lets infrared light pass through and
concentrates incident radiation on the sensors. So-called "detection radiation" are formed
through the lens system and cause a clear signal jump to be detected when they enter.
Note: The term "detection radiation" refers to the imaginary line that begins in the sensor, goes
through the lens system and continues in a straight line outside of the device. The device itself
does not emit any radiation.
Figure3: Thermal image of a person and their reflection on the ground
The detection of heat sources through a motion detector is influenced by the following criteria:
– Geometry of the detection field:
A motion detector that faces downwards at an angle is different from one that looks
straight ahead into infinity .
– Distance between heat source and motion detector: the further away the heat source is
from the sensor, the weaker the evaluable signal on the sensor (Figure 4).
– Size of the heat source, e. g. adult or child (Figure 5)
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– Temperature of the heat source: surfaces at 37 °C radiate more intensely than at
10 °C(Figure 5).
– Contrast between the heat source and the environment: if the heat source radiates just as
intensely as the environment. detection will be significantly more difficult (Figure 4).
– Speed of movement: a faster moving object produces clearer signals in the sensor.
– Direction of movement: if detection radiation passes tangentially, this typically results in an
abrupt sensor signal which can be evaluated well. However, if a heat source moves radial
to the sensor, the sensor signal changes happen more slowly. This makes differentiation
from the background noise significantly more difficult (Figure 5).
– Concentration of the detection field: the number of sectors and switch segments of the de-
tection field determines the the concentration of the scan and therefore the response be-
haviour.
– Sensor sensitivity: the sensor sensitivity can be adjusted according to application and en-
vironment. Low heat contrasts outdoors may require a high sensitivity that is far to high for
indoor use. The sensitivity should be decreased in this case.
– Environmental medium: high humidity or rain can negatively influence the permeability for
infrared radiation.
Figure4: Detection of heat sources – detection field geometry and distance (photometric dis-
tance law)
Figure5: Size, insulation and contrast of heat sources
Interference sources for motion detection
In addition to the mentioned effects, other objects within the detection field could also trigger the
motion detector, e.g.:
– Heat sources such as heating units, outlets from ventilation openings or air conditioners,
copiers, printers, coffee machines, etc. (Figure 6)
– Draughty doorways
– Incandescent lamps when switching on or off
– Animals, e.g. stray cats
– Reflections on reflecting surfaces (Figure 3)
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Figure6: Heat sources in buildings
Some of the mentioned effects can be compensated for using intelligent filter switches by calib-
rating the received signals with typical motion patterns. Selecting the device and installation loc-
ation should be made so that the detection field is suited for the intended purpose.
Technical information and statements
On the one hand the effective range of motion detector applications is affected by a wide range
of factors – however, specifications in the technical data typically come out very precise. These
specifications generally refer to the normal area of use of the device. For flush-mounted motion
detector we assume the typical interior situation in a functional building with moderate ambient
conditions, at a temperature of about 18 °C, average humidity, used in a hallway with walking
people.
Higher ranges are to be expected for:
– lower ambient temperature (note season specific clothing)
– more intense movement of persons
– reflective surfaces
Lower ranges are to be expected for:
– higher ambient temperatures, where people move less and there is more heating, such as
is the case with meeting rooms, classrooms, waiting areas and office environments
– significantly cooler ambient temperature, when clothing has a thicker insulating effect
– Direction of motion to the motion detector for ("radial detection")
– rising terrain that limits the geometry of the detection field.
5 Operation
Slide switch
The slide switch serves for local control and sets the operating mode (function block 1).
Figure7: Slide switch
ON position: Switching on, e.g. light.
OFF position: Switching off, e.g. light
AUTO position: Automatic operating mode. Detected movements within the detection field trig-
ger a switch-on signal.
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Switching the light on manually
￭ Move the slide switch to the ON position.
Switching the light off manually
￭ Move the slide switch to the OFF position.
Switching on the Automatic operating mode
￭ Move the slide switch to the AUTO position.
Status LED
Behind the sensor window (4) there are status LEDs for indicating different states of operation
(Figure 8).
Figure8: Status LED
YE Yellow. OFF operating mode is active.
GN Green. ON operating mode is active.
BU Blue. Movement detected (parameter-dependent) or IR reception (only for "Universal"
version).
RD Red. Programming mode is active.
6 IR remote control
Only for "Universal" version:
Function buttons IR remote control
Button Function
¿Detection of a motion is sent for function block
1. The automatic mode is exited.
ÁEnd of a motion is sent for function block 1.
The automatic mode is exited.
ÀThe automatic mode is activated again for
function block 1.
The ON state is first exited after a new motion
detection.
Adjustable buttons IR remote control
Button Function
´Increasing sensitivity
²Reducing sensitivity
³Resetting sensitivity to presetting
ÊFunction block 1: Brightness threshold 10 lx
ËFunction block 1: Brightness threshold 50 lx
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Button Function
ÌFunction block 1: Brightness threshold 150 lx
ÍFunction block 1: Brightness independent op-
eration
ÉFunction block 1: Set current brightness as
brightness threshold
10 SEK, 30 SEK, 2 MIN, 5 MIN, 30 MIN Function block 1: Extend minimum run-on-time
(10 seconds) by the selected value
START, STOP Function block 1: Extend minimum run-on-time
(10 seconds) individually
Set-up buttons of IR remote control
Button Function
ÙWalking test – Check detection field
ÚReset sensitivity, brightness threshold and
run-on-time to presetting. Press for at least 3
seconds
Operation with IR remote control
If enabled, function block 1 can be operated manually by remote control. In manual operation,
brightness and motion detection for function block 1 are switched off until automatic mode is re-
set.
￭ Switch on, e.g. light: Press the ¿ button.
￭ Switch off, e.g. light: Press the Á button.
￭ Set automatic mode: Press the À button.
Manually changing settings with IR remote control
If enabled, individual settings for function block 1 can be changed during operation using a re-
mote control.
Sensitivity:
￭ Increase sensitivity by one level: Press the ´ button.
￭ Decrease sensitivity by one level: Press the ² button.
￭ Recall set sensitivity again: Press ³ button.
The manual adjustment of sensitivity by the adjuster Sens. (6) is overwritten by the IR-re-
mote control and vice versa.
Brightness threshold:
￭ Change brightness threshold: Depending on requirement, press Ê button, Ë button, Ì
button or Í button.
￭ Set current brightness as brightness threshold: Press É button.
Run-on-time: The preset run-on-time of 10 seconds can be extended individually.
￭ Extend run-on-time: Depending on requirement, press 10 SEK button, 30 SEK button, 2
MIN button, 5 MIN button or 30 MIN button. Other values can be set with the START/
STOP buttons.
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7 Information for electrically skilled persons
DANGER!
Mortal danger of electric shock.
Cover up live parts in the installation environment.
7.1 Fitting and electrical connection
Detection field and range
Figure9: Range with tangential direction of motion
Figure10: Range with radial direction of motion
The size of the detection field depends on the direction of motion and the adjusted sensitivity.
As the distance to the detector increases, the detection density and sensitivity decrease.
4: High sensitivity
1: Low sensitivity
The specifications on the extent of the detection field are general guide values. Discrep-
ancies can occur depending on the installation environment and the intensity of the heat
motion.
The basic sensitivity can be reduced in order to minimize faulty switching outdoors (e.g.
from wind).
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Figure11: Detection field and mounting height
Selecting installation location
￭ Select a vibration-free installation location. Vibrations can lead to unwanted switching.
￭ To achieve optimum range, choose an installation location that is transversal to the direc-
tion of motion.
￭ Avoid interference sources in the detection area. Interference sources, e.g. heaters, vent-
ilation, air conditioners, and cooling light bulbs can lead to unwanted detections.
Limiting the detection field
The detection field can be limited as required (Figure 12).
￭ Switch off the left or right PIR sensor with parameter setting. Detection angle approx.
100°.
or
￭ Mounting the cover (Figure 12). Detection angle approx. 90°.
Figure12: Limiting the detection field
Figure13: Range with tangential direction of motion
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Figure14: Range with radial direction of motion
Mounting the panel
Figure15: Dismounting of slide switch
Figure16: Dismounting of design cover
Figure17: Mounting, cover, ranges LS/CD and A ranges
Ranges LS, CD:
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