5
Description
Sensor Vari KNX 3L-TH-D
• Version: 08.12.2016 • Technical changes and errors excepted.
1.
Description
The
Sensor Vari KNX 3L-TH-D
for the KNX building bus system records brightness,
temperature, air humidity and air pressure outside or inside the building.
All measurement values can be used for the control of limit-dependent switching out-
puts. States can be linked via AND logic gates and OR logic gates. Multi-function mod-
ules change input data as required by means of calculations, querying a condition, or
converting the data point type. In addition, an integrated control variable comparator
can compare and output variables that were received via communication objects.
Integrated PI-controllers control ventilation (according to humidity) and heating/cool-
ing (according to temperature). The
Vari KNX 3L-TH-D
can output a warning to the
bus as soon as the comfort field (as per DIN 1946) is exited.
The compact housing of the
Vari KNX 3L-TH-D
accommodates the sensors, evalua-
tion circuits and bus-coupling electronics.
Functions:
•
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.
•
Temperature and humidity measurement
(relative, absolute), in each case
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
•
Air pressure measurement:
Output of the value as normal pressure and
optionally as barometric pressure
•
Switching outputs
for all measured and computed values. Threshold values
can be adjusted per parameter or via communication objects
•
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
•
PI controller for humidity
according to humidity: Ventilate/Air (one-stage) or
Ventilate (one or two-stage)
•
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
•
4 control variable comparators
to output minimum, maximum or average
values. 5 inputs each for values received via communication objects
•
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
Summary of Contents for Vari KNX 3L-TH-D
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