Sensors Vari KNX 3L-T
1
Sensors Vari KNX 3L-T
• Version: 06.12.2022 • Technical changes and errors excepted. • Elsner Elektronik GmbH • Sohlengrund 16 • 75395 Ostelsheim • Germany • www.elsner-elektronik.de •
Technical Service: +49 (0) 7033 / 30945-250
Vari KNX 3L-T,
Vari KNX 3L-TH,
Vari KNX 3L-TH-D GPS
Combined brightness sensors
1.
Description
The
Sensors Vari KNX 3L-T
for the KNX building bus system record brightness
(sun), temperature and additionally air humidity and air pressure outside, depen-
ding on the model. The model Vari KNX 3L-TH-D GPS also receives the GPS signal
for time and location and uses it to compute the position of the sun (azimuth and
elevation).
The measurement values can be used for the control of limit-dependent switching
outputs. States can be linked via AND logic gates and OR logic gates. Multi-functi-
on modules change input data as required by means of calculations, querying a
condition, or converting the data point type.
All models have an integrated PI controller for heating/cooling. Models with humi-
dity sensor have a PI controller for ventilation.
The compact housing of the
Vari KNX 3L
accommodates the sensors, evaluation
circuits and bus-coupling electronics.
Functions of all models:
(70383 Vari KNX 3L-T, 70384 Vari KNX 3L-TH,
70390 Vari KNX 3L-TH-D GPS)
•
Brightness measurement
: The current light intensity is measured by three
sensors. Of the three measurement values, the maximum value or a
calculated mixed value can be output optionally.
•
Switching outputs
for all measured and computed values. Threshold
values can be adjusted per parameter or via communication objects
•
8 AND and 8 OR logic gates
, each with 4 inputs. All switching events as
well as 16 logic inputs (in the form of communications objects) can be used
as inputs for the logic gates. The output of each gate can be configured
optionally as 1-bit or 2 x 8-bit
•
8 multi-function modules
(computers) for changing the input data by
calculations, by querying a condition or by converting the data point type
•
Temperature measurement
with
mixed value calculation
. The share of
internal measurement value and external value can be set as a percentage
•
PI-controller for heating
(one or two-stage) and
cooling
(one or two-
stage) according to temperature. Regulation according to separate setpoints
or basic setpoint temperature
•
Summer compensation
for cooling systems. A characteristic curve
matches the target temperature in the room to the external temperature and
sets the minimum and maximum target temperature values
Additional functions of the models with humidity sensor:
(70384 Vari KNX 3L-TH, 70390 Vari KNX 3L-TH-D GPS)
•
Humidity measurement
(relative, absolute), with
Mixed value
calculation
. The share of internal measurement value and external value
can be set as a percentage.
In addition the bus output will indicate whether the values are inside the
comfort field
(DIN 1946). The
dewpoint
will be calculated
•
PI controller for humidity
according to humidity: Ventilate/Air (one-
stage) or Ventilate (one or two-stage)
•
4 control variable comparators
to output minimum, maximum or
average values. 5 inputs each for values received via communication objects
Additional functions 70390 Vari KNX 3L-TH-D GPS:
•
Air pressure measurement:
Output of the value as normal pressure and
optionally as barometric pressure
•
GPS receiver
, outputting the current time and location coordinates. The
Sensor Vari KNX 3L-TH-D GPS
also computes the position of the sun
(azimuth and elevation)
Configuration is made using the KNX software ETS. The
product file
can be dow-
nloaded from the Elsner Elektronik website on
www.elsner-elektronik.de
in the
“Service” menu.
1.0.1. Scope of delivery
•
Sensor
•
Stainless steel installation band for pole installation
•
4×50 mm stainless steel Roundhead screws and 6×30 mm dowels for wall
mounting. Use fixing materials that are suitable for the base!
1.1. Technical specification
Vari KNX 3L-TH-D GPS:
Vari KNX 3L-TH:
Vari KNX 3L-T:
The product conforms with the provisions of EU directives.
2.
Installation and start-up
Installation, testing, operational start-up and troubleshooting should
only be performed by an authorised electrician.
CAUTION!
Live voltage!
There are unprotected live components inside the device.
• Inspect the device for damage before installation. Only put undamaged
devices into operation.
• Comply with the locally applicable directives, regulations and provisions
for electrical installation.
• Immediately take the device or system out of service and secure it against
unintentional switch-on if risk-free operation is no longer guaranteed.
Use the device exclusively for building automation and observe the operating ins-
tructions. Improper use, modifications to the device or failure to observe the ope-
rating instructions will invalidate any warranty or guarantee claims.
Operate the device only as a fixed-site installation, i.e. only in assembled condition
and after conclusion of all installation and operational start-up tasks, and only in
the surroundings designated for it.
Elsner Elektronik is not liable for any changes in norms and standards which may
occur after publication of these operating instructions.
2.1. Installation location
Due to the GPS receiver, the Sensor
Vari KNX 3L-TH-D GPS
must be installed
outside. The
other models
can be mounted outside or inside.
The
Vari KNX 3L-TH-D GPS and Vari KNX 3L-TH
should be protected from
condensation. For critical applications in which the formation of condensation is
expected, please consult Elsner Elektronik about special solutions.
Select an installation position on the building where the sensors can measure
sunshine without any obstructions. The weather station should not be shaded by
structures or, for example, trees. Ensure no shadow is thrown on the device by an
extended awning.
Temperature measurements can also be distorted by external influences such as
warming or cooling of the building structure on which the sensor is mounted (sun-
light, heating or cold water pipes). Temperature variations from such sources of in-
terference must be corrected in the ETS in order to ensure the specified accuracy
of the sensor (temperature offset).
Note for devices with GPS receiver:
Magnetic fields, transmitters and interference fields from electrical consumers
(e.g. fluorescent lamps, neon signs, switch mode power supplies etc.) can block or
interfere with the reception of the GPS signal.
2.2. Device design
2.3. Installing the device
ATTENTION!
Even a few drops of water can damage the device electronics.
•
Do not open the device if water (e.g. rain) can get into it.
2.3.1. Preparation for installation
2.3.2. Fitting the lower part of the housing with mounting
Now, first of all, assemble the lower part of the housing with the integrated moun-
ting for wall or pole installation.
Technical specifications and installation instructions
Item numbers
70383 Vari KNX 3L-T
70384 Vari KNX 3L-TH
70390 Vari KNX 3L-TH-D GPS
Housing
Plastic
Colour
White / Translucent
Assembly
Surface mount
Protection category
IP 44
Dimensions
approx. 65 × 80 × 30 (W × H × D, mm)
Weight
approx. 60 g
Operating voltage
KNX bus voltage
Bus current
max. 20 mA
Data output
KNX +/- bus connector terminal
Group addresses
max. 2000
Assignments
max. 2000
Brightness sensor:
Measurement range
0 lux … 150,000 lux
Ambient temperature
Operation -25…+80°C, Storage -40…+85°C,
avoid condensation
Communication
objects:
603
Temperature sensor:
Measurement range
-25°C … +80°C
Humidity sensor:
Measurement range
0% RH … 100% RH
Pressure sensor:
Measurement range
300 mbar … 1100 mbar
Ambient temperature
Operation -25…+80°C, Storage -40…+85°C,
avoid condensation
Communication
objects:
421
Temperature sensor:
Measurement range
-25°C … +80°C
Humidity sensor:
Measurement range
0% RH … 100% RH
Ambient temperature
Operation -30…+50°C, Storage -30…+70°C
Communication
objects:
339
Temperature sensor:
Measurement range
-30°C … +50°C
Fig. 1
The device must be attached to a ver-
tical wall (or a pole).
wall
or
pole
90°
Fig. 2
The device must be mounted in the
horizontal (transverse) direction.
Horizontal
Fig. 3
For installation in the northern hemis-
phere, the device must be aligned to
face south.
For installation in the southern hemis-
phere, the device must be aligned to
face north.
North
South
Wall/Pole
3
Fig. 4
1 Position of the brightness
sensors 1-3. With align-
ment of the device to the
south
Sensor 1 = West
Sensor 2 = South
Sensor 3 = East
2 Semi-transparent cover
Vari KNX TH-D GPS: GPS
receiver and pressure sen-
sor below.
3 Position of the Signal LED
(under the cover). LED is
freely controlled via two
objects
4
8
7
1
5
2
6
1
3
2
4 Position of the programming LED (under the cover)
5 Lower part of housing
6 Temperature and humidity sensor for Vari KNX 3L-TH-D GPS, Vari
KNX 3L-TH.
Temperature sensor for Vari KNX 3L-T.
7 Programming key on the bottom of the housing (recessed),
see
Ad-
dressing the device
8 Wall/Pole holder
Fig. 5
The cover and lower part of the hou-
sing are connected together. Pull both
parts apart in a straight line.
EN
