Jung KNX 2095 LUX User manual
Flush-mounted brightness controller
Flush-mounted brightness controller
Art. No. 2095 LUX
Operating instructions
1 Safety instructions
Electrical equipment may only be installed and fitted by electrically skilled persons.
Failure to observe the instructions may cause damage to the device and result in fire and
other hazards.
Do not shorten or grind the rigid fibre-optic rod nor use it for any other purpose.
These instructions are an integral part of the product, and must remain with the end
customer.
2 Device components
Figure 1: Brightness controller, concealed
(1) Brightness controller
(2) Lid
(3) Screwholes
(4) Bus connecting terminal
(5) Programming button
(6) Rigid fibre-optic rod with straight incidence
(7) Rigid fibre-optic rod with sloping incidence
(8) Sensor opening
3 Function
Intended use
- Measurement and control of lighting in interior areas
- Ceiling installation on fixed ceilings
- Installation in appliance box to DIN 49073
Product characteristics
- Continuous constant light control for dimmable lighting
- Switching two-point control for switched lighting
- Integrated bus coupling
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- Supply via bus
- Transmission of measured values, switching and dimming values
- Setpoint changeable in operation
- Control can be switched on and off in operation
4 Information for qualified electricians
4.1 Installation and electrical connection
DANGER!
Electrical shock on contact with live parts in the installation environment.
Electrical shocks can be fatal.
Before working on the device, disconnect the power supply and cover up live
parts in the working environment.
Selecting the installation location
The device measures the brightness on a work surface. Select the installation location such that
the work surface is recorded fully.
Light falling directly on the sensor or reflected by shiny surfaces causes incorrect measuring
results and impedes control. To ensure fault-free operation, the controller must only measure
diffused, reflected light.
i When delivered, the light measurement is optimised for installation at a height of
2.50 m directly over a work surface of 0.75 m height with approx. 30 % reflection. With
differing situations, please calibrate the controller (see chapter 4.2. Commissioning).
o Install the brightness controller directly above the work surface on the room ceiling
(figure 2).
Figure 2: Rigid fibre-optic rod with straight incidence
H Room height
a Height of the work surface
ø Diameter of the measuring surface:
ø = (H – a) · 0.54
o If installation is not possible directly over the work surface, then install the brightness
controller with a side offset (figure 3). The detection cone is then to the side of the surface
to be measured.
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Figure 3: Rigid fibre-optic rod with sloping incidence
b Width of the measuring surface:
w = (H – a) · 0.6
t Depth of the measuring surface
d = (H – a) · 0.56
Connecting and installing a concealed device
Use an appliance box to DIN 49073. The screwholes (3) in the lid (2) fit the contour of the
appliance box.
o Connect the device (1) with the bus connection terminal (4) to the bus cable.
o Assign physical address (see chapter 4.2. Commissioning).
o Please the device in the appliance box.
o Screw the lid (3) to the appliance box using the fastening screws provided.
4.2 Commissioning
Loading the physical address and application software
The Programming LED is located in the sensor opening (8) on the front side of the device.
o Switch on the bus voltage
o Press the programming key (5).
The Programming LED flashes.
o Assign physical address.
The programming LED goes out.
o Note the physical address on the device label.
o Load the application software into the device.
Using a rigid fibre-optic rod with straight incidence
The controller is directly above the work surface (figure 2).
o Insert the rigid fibre-optic rod with a straight incidence (6) approx. 10 mm into the sensor
opening (8).
Using a rigid fibre-optic rod with sloping incidence
The controller is above and to the side of the work surface (figure 3).
o Insert the rigid fibre-optic rod with a sloping incidence (7) approx. 10 mm into the sensor
opening (8).
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o Align the rigid fibre-optic rod (7) in such a way that the longer side of the rod points towards
the work surface to be measured (figure 3).
i Calibrate the controller when using the rigid fibre-optic rod with sloping incidence (7).
Calibrate the controller
The installation height, lighting situation and degree of reflection influence the controller.
Calibrate the controller for the most accurate constant light control or brightness measurement
or if the rigid fibre-optic rod is used with sloping incidence (7).
The controller is calibrated using a bus telegram Calibrate setpoint. The controller
programming must make the reception of this telegram possible.
Calibrate the controller with as little daylight incidence as possible. If necessary, darken the
room.
Use a calibrated light meter.
o Switch on the lighting to be controlled above the work surface.
o Measure the lighting strength on the work surface.
o Set the lighting so that the light meter shows the required setpoint, e.g. 500 lx.
o Send the Calibrate setpoint telegram to the controller via the bus.
i The technical product documentation contains detailed information on the calibration of the
brightness controller.
5 Appendix
5.1 Technical data
Flush-mounted brightness controller, Art. No. 2095 LUX
Ambient temperature -5 ... +45 °C
Storage/transport temperature -25 ... +70 °C
Relative humidity max. 93 % (No moisture condensation)
Protection class III
Measuring range 0 ... 2000 lx
Dimensions L×W×H (without cover) 50×35×15 mm
Weight approx. 30 g
KNX medium TP 1
Commissioning mode S-mode
Rated voltage KNX DC 21 ... 32 V SELV
Current consumption KNX 15 mA
Connection mode KNX Connection terminal
5.2 Warranty
We reserve the right to make technical and formal changes to the product in the interest of
technical progress.
We provide a warranty as provided for by law.
Please send the unit postage-free with a description of the defect to our central customer
service office.
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Flush-mounted brightness controller
ALBRECHT JUNG GMBH & CO. KG
Volmestraße 1
58579 Schalksmühle
Telefon: +49.23 55.8 06-0
Telefax: +49.23 55.8 06-2 04
www.jung.de
Service Center
Kupferstr. 17-19
44532 Lünen
Germany
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