elsner elektronik KNX T-UN 130 Guide

EN
Installation and Adjustment
KNX T-UN 130
Temperature Sensor
Item number 70220

1 Contents
Elsner Elektronik GmbH • Sohlengrund 16 • 75395 Ostelsheim • Germany
Temperature Sensor KNX T-UN 130
Version: 27.01.2020 • Errors excepted. Subject to technical changes.
1. Description ........................................................................................... 3
1.1. Technical specifications ........................................................................................... 3
2. Installation and commissioning ........................................................... 4
2.1. Installation notes ...................................................................................................... 4
2.2. Installation position .................................................................................................. 5
2.3. Mounting and connection ....................................................................................... 5
2.3.1. Composition of the sensor ........................................................................... 5
2.3.2. Connection of the sensor ............................................................................. 6
2.4. Notes on mounting and commissioning ................................................................ 6
3. Addressing of the device at the bus .................................................... 6
4. Transfer protocol ................................................................................. 7
4.1. List of all communications objects ......................................................................... 7
5. Parameter settings ............................................................................. 10
5.1. Behaviour on power failure/ power restoration .................................................. 10
5.2. General settings ..................................................................................................... 10
5.3. Temperature measured value ............................................................................... 10
5.4. Temperature threshold values .............................................................................. 11
5.4.1. Temperature threshold value 1...4 ............................................................ 11
5.5. Temperature PI controller ...................................................................................... 13
5.6. Logic ........................................................................................................................ 20
5.6.1. AND and/or OR logic 1 / 2 / 3 / 4 ................................................................ 21
5.6.2. AND logic connection inputs ..................................................................... 21
5.6.3. OR logic connection inputs ........................................................................ 22

2 Clarification of signs
This manual is amended periodically and will be brought into line with new software
releases. The change status (software version and date) can be found in the contents footer.
If you have a device with a later software version, please check
www.elsner-elektronik.de in the menu area "Service" to find out whether a more up-to-
date version of the manual is available.
Clarification of signs used in this manual
Installation, inspection, commissioning and troubleshooting of the device
must only be carried out by a competent electrician.
Safety advice.
Safety advice for working on electrical connections, components,
etc.
DANGER! ... indicates an immediately hazardous situation which will lead to
death or severe injuries if it is not avoided.
WARNING! ... indicates a potentially hazardous situation which may lead to
death or severe injuries if it is not avoided.
CAUTION! ... indicates a potentially hazardous situation which may lead to
trivial or minor injuries if it is not avoided.
ATTENTION! ... indicates a situation which may lead to damage to property if it is
not avoided.
ETS In the ETS tables, the parameter default settings are marked by
underlining.

3 Description
Temperature Sensor KNX T-UN 130 • Status: 27.01.2020 • Technical changes reserved. Errors reserved.
1. Description
The Temperature Sensor KNX T-UN 130 consists of evaluation electronics and
measuring sensor. The sensor measures temperature in indoor and outdoor areas. The
sensor can receive an external measured value via the bus and process it with the own
data to an overall temperature (mixed value).
The KNX T-UN 130 provides four switching outputs with adjustable threshold values
as well as additional AND and OR logic gates. The sensor has got a PI controller for
heating and cooling.
Functions:
•Measurement of temperature
•Mixed value from own measured value and external value (proportions can
be set in percentage)
•PI controller for heating (one or two step) and cooling (one or two step)
•Threshold values can be adjusted per parameter or via communication
objects
•4 AND and 4 OR logic gates with each 4 inputs. Every switching incident as
well as 8 logic inputs (in the form of communication objects) may be used as
inputs for the logic gates. The output of each gate may optionally be configured
as 1 bit or 2 x 8 bits
Configuration is made using the KNX software ETS. The product file can be down-
loaded from the Elsner Elektronik website on www.elsner-elektronik.de in the “Ser-
vice” menu.
1.1. Technical specifications
Housing Plastic material, sensor sleeve metal
Colour Housing white, cable black
Installation Mounting
Protection category meas.
sensor
IP 68
Dimensions evaluation
electronics
approx. 38 x 47 x 24 (W x H x D, mm)
Dimensions measuring
sensor
length sensor sleeve approx. 20 mm,
diameter approx. 6 mm,
cable length approx. 300 cm
Ambient temperature Evaluation electronics:
Operation -20…+70 °C, storage -55…+150°C
Measuring sensor and cable:
Operation -30…+130 °C, storage -55…+150°C
Ambient air humidity Evaluation electronics: max. 95% R. H., avoid bedewing
Operating voltage KNX bus voltage
Bus current max. 8 mA
Data output KNX +/- bus terminal plug

4 Installation and commissioning
Temperature Sensor KNX T-UN 130 • Status: 27.01.2020 • Technical changes reserved. Errors reserved.
The product conforms with the provisions of EU directives.
2. Installation and commissioning
2.1. Installation notes
Installation, testing, operational start-up and troubleshooting should
only be performed by an electrician.
CAUTION!
Live voltage!
There are unprotected live components inside the device.
• National legal regulations are to be followed.
• Ensure that all lines to be assembled are free of voltage and take
precautions against accidental switching on.
• Do not use the device if it is damaged.
• Take the device or system out of service and secure it against
unintentional use, if it can be assumed, that risk-free operation is no
longer guaranteed.
The device is only to be used for its intended purpose. Any improper modification or
failure to follow the operating instructions voids any and all warranty and guarantee
claims.
After unpacking the device, check it immediately for possible mechanical damage. If it
has been damaged in transport, inform the supplier immediately.
The device may only be used as a fixed-site installation; that means only when assem-
bled 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.
BCU type Own micro controller
PEI type 0
Group addresses max. 184
Allocations max. 184
Communication objects 80
Measurement range -30…+130°C
Accuracy at +25°C housing
temperature of evaluation
electronics
Sensor temperature Max. difference of measured
value
±0°C ± 1.0°C
-30…+25°C ± 1.5°C
-30…+70°C ± 2.5°C
-30…+130°C ± 4.0°C

5 Installation and commissioning
Temperature Sensor KNX T-UN 130 • Status: 27.01.2020 • Technical changes reserved. Errors reserved.
2.2. Installation position
The evaluation electronics of the sensor is installed in a socket. When selecting an in-
stallation location for the measuring sensor, please ensure that the measurement re-
sults are affected as little as possible by external influences. Possible sources of inter-
ference include:
• Direct sunlight
• Drafts from windows and doors
• Warming or cooling of the building structure on which the sensor is mounted,
e.g. due to sunlight, heating or cold water pipes
• Connection lines which lead from warmer or colder areas to the sensor
Temperature variations from such sources of interference must be corrected in the ETS
in order to ensure the specified accuracy of the sensor (temperature offset).
2.3. Mounting and connection
2.3.1. Composition of the sensor
1 Slot for KNX terminal +/-
2 Programming LED
3 Programming button for teaching the instrument
4 Connection clamp for measuring sensor
5 Connection cable measuring sensor
6 Sensor tip (measuring sensor)
1
2
4
3
5
6

6 Addressing of the device at the bus
Temperature Sensor KNX T-UN 130 • Status: 27.01.2020 • Technical changes reserved. Errors reserved.
2.3.2. Connection of the sensor
Connect the cable of the measuring sensor to the evaluation electronics (connection is
reverse polarity protected). The cable connection may be extended up to 10 m maxi-
mum.
2.4. Notes on mounting and commissioning
Never expose the device to water (e.g. rain) or dust. This can damage the electronics.
You must not exceed a relative humidity of 95%. Avoid condensation.
After the bus voltage has been applied, the device will enter an initialisation phase last-
ing a few seconds. During this phase no information can be received or sent via the
bus.
3. Addressing of the device at the bus
The device is supplied with the bus address 15.15.255. You can program another ad-
dress into the ETS by overwriting the 15.15.255 address or by teaching via the pro-
gramming button.

7 Transfer protocol
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
4. Transfer protocol
Units:
Temperatures in degrees Celsius
4.1. List of all communications objects
Abbreviation flags:
C Communication
R Read
WWrite
T Transfer
UUpdate
No. Text Function Flags Size
0 External measured temperature value Input -WC- 2 bytes
1 Internal measured temperature value Output R-CT 2 bytes
2 Complete-Temperature measured value Output R-CT 2 bytes
3 Requirement min./max.
Temperature measured value
Input -WC- 1 bit
4 Minimum measured value for
temperature
Output R-CT 2 bytes
5 Maximum temperature measured value Output R-CT 2 bytes
6 Reset min./max. Temperature measured
value
Input -WC- 1 bit
7 Sensor malfunction Output R-CT 1 bit
8 Reserve Output R-CT 1 bit
9 Temp. threshold value 1: Absolute value Input/Output RWCT 2 bytes
10 Temp. threshold value 1: (1:+ | 0: -) Input -WC- 1 bit
11 Temp. threshold value 1: Switching
output
Output R-CT 1 bit
12 Temp. threshold value 1: Switching
output block
Input -WC- 1 bit
13 Temp. threshold value 2: Absolute value Input/Output RWCT 2 bytes
14 Temp. threshold value 2: (1:+ | 0:-) Input -WC- 1 bit
15 Temp. threshold value 2: Switching
output
Output R-CT 1 bit
16 Temp. threshold value 2: Switching
output block
Input -WC- 1 bit
17 Temp. threshold value 3: Absolute value Input/Output RWCT 2 bytes
18 Temp. threshold value 3: (1:+ | 0: -) Input -WC- 1 bit
19 Temp. threshold value 3: Switching
output
Output R-CT 1 bit

8 Transfer protocol
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
20 Temp. threshold value 3: Switching
output block
Input -WC- 1 bit
21 Temp. threshold value 4: Absolute value Input/Output RWCT 2 bytes
22 Temp. threshold value 4: (1:+ | 0: -) Input -WC- 1 bit
23 Temp. threshold value 4: Switching
output
Output R-CT 1 bit
24 Temp. threshold value 4: Switching
output block
Input -WC- 1 bit
25 Temp. controller: Switching object
(0:Heating | 1:Cooling)
Input -WC- 1 bit
26 Temp. controller: Current setpoint Output R-CT 2 bytes
27 Temp. controller: Blocking object Input -WC- 1 bit
28 Temp. controller: Setpoint, daytime Input/Output RWCT 2 bytes
29 Temp. controller: Setpoint, day (1:+ | 0: -) Input -WC- 1 bit
30 Temp. controller: Setpoint, daytime
(cooling)
Input/Output RWCT 2 bytes
31 Temp. controller: Setpoint, daytime
(cooling) (1:+ | 0: -)
Input -WC- 1 bit
32 Temp. controller: Control variable,
heating (level 1)
Output R-CT 1 byte
33 Temp. controller: Control variable,
heating (level 2)
Output R-CT 1 byte
34 Temp. controller: Control variable,
heating (level 2)
Output R-CT 1 bit
35 Temp. controller: Control variable,
cooling
Output R-CT 1 byte
36 Temp. controller: Control variable,
cooling (level 2)
Output R-CT 1 byte
37 Temp. controller: Control variable,
cooling (level 2)
Output R-CT 1 bit
38 Temp. controller: Night-time reduction
activation
Input -WC- 1 bit
39 Temp. controller: Heating setpoint, night Input/Output RWCT 2 bytes
40 Temp. controller: Heating setpoint, night
(1:+ | 0:-)
Input -WC- 1 bit
41 Temp. controller: Cooling setpoint, night Input/Output RWCT 2 bytes
42 Temp. controller: Cooling setpoint, night
(1:+ | 0:-)
Input -WC- 1 bit
43 Temp. controller: Heating status (1=ON |
0=OFF)
Output R-CT 1 bit
44 Temp. controller: Heating 2 (1=ON |
0=OFF)
Output R-CT 1 bit
45 Temp. controller: Cooling status (1=ON |
0=OFF)
Output R-CT 1 bit
No. Text Function Flags Size

9 Transfer protocol
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
46 Temp. controller: Cooling 2 status (1=ON
| 0=OFF)
Output R-CT 1 bit
47 Temp. controller: Window status (0:
CLOSED | 1: OPEN)
Input -WC- 1 bit
78 Logic input 1 0 -WC- 1 bit
79 Logic input 2 0 -WC- 1 bit
80 Logic input 3 0 -WC- 1 bit
81 Logic input 4 0 -WC- 1 bit
82 Logic input 5 0 -WC- 1 bit
83 Logic input 6 0 -WC- 1 bit
84 Logic input 7 0 -WC- 1 bit
85 Logic input 8 0 -WC- 1 bit
86 AND logic 1 Switching output R-CT 1 bit
87 AND logic 1 8-bit output A R-CT 1 byte
88 AND logic 1 8-bit output B R-CT 1 byte
89 AND logic 2 Switching output R-CT 1 bit
90 AND logic 2 8-bit output A R-CT 1 byte
91 AND logic 2 8-bit output B R-CT 1 byte
92 AND logic 3 Switching output R-CT 1 bit
93 AND logic 3 8-bit output A R-CT 1 byte
94 AND logic 3 8-bit output B R-CT 1 byte
95 AND logic 4 Switching output R-CT 1 bit
96 AND logic 4 8-bit output A R-CT 1 byte
97 AND logic 4 8-bit output B R-CT 1 byte
98 OR logic 1: Switching output R-CT 1 bit
99 OR logic 1: 8-bit output A R-CT 1 byte
100 OR logic 1: 8-bit output B R-CT 1 byte
101 OR logic 2: Switching output R-CT 1 bit
102 OR logic 2: 8-bit output A R-CT 1 byte
103 OR logic 2: 8-bit output B R-CT 1 byte
104 OR logic 3: Switching output R-CT 1 bit
105 OR logic 3: 8-bit output A R-CT 1 byte
106 OR logic 3: 8-bit output B R-CT 1 byte
107 OR logic 4: Switching output R-CT 1 bit
108 OR logic 4: 8-bit output A R-CT 1 byte
109 OR logic 4: 8-bit output B R-CT 1 byte
117 Software version Output R-CT 2 bytes
No. Text Function Flags Size

10 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
5. Parameter settings
5.1. Behaviour on power failure/ power
restoration
Behaviour following a failure of the bus power supply:
The device sends nothing.
Behaviour on bus restoration of power and following programming or reset:
The device sends all outputs according to their send behaviour set in the parameters
with the delays established in the "General settings" parameter block. The "Software
version" communications object is sent once after 5 seconds.
5.2. General settings
Configure the parameter display for the Temperature Sensor KNX T-UN as follows:
Set the basic data transfer characteristics and activate the malfunction object as re-
quired.
5.3. Temperature measured value
Use Offsets to adjust the readings to be sent.
Use parameters and objects for
the humidity sensor
No
Type of logic Logic for temperature sensor
Use parameters and objects for
display
No
Transmission delays after power-up and programming for:
Measured values 5 s • ... • 2 h
Threshold values and switching outputs 5 s • ... • 2 h
Setpoints and actuating variable 5 s • 10 s • ... • 2 h
Logic outputs 5 s • 10 s • ... • 2 h
Maximum telegram quota • 1 message per second
• ...
• 5 messages per second
• ...
• 20 messages per second
Use malfunction object Yes • No
Offset in 0.1°C -50…50; 0

11 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
The unit can calculate a mixed value from its own reading and an external value. Set
the mixed value calculation if desired.
Note: If an external portion is used, all of the following settings are related to the over-
all reading!
The minimum and maximum readings can be saved and sent to the bus . Using the
"Reset temperature min/max. value" objects the values can be reset to the current read-
ings.
Note: The values are not retained after a reset.
5.4. Temperature threshold values
Activate the threshold values that you want to use here. The Temperature Sensor
KNX T-UN provides four threshold values for temperature.
5.4.1. Temperature threshold value 1...4
Temperature threshold value
The threshold value can be directly set in the application program using parameters,
or via the bus using a communications object.
Threshold value setpoint using parameter:
Set the threshold values and hysteresis directly.
Use external reading Yes • No
Ext. Reading proportion of the total reading 5% • 10% • ... • 50% • ... • 100%
Internal and total measured temperature
value
• do not send
• send periodically
• send on change
• send on change and periodically
On change of
(if sent on change)
0.1°C • ... • 0.5°C • ... • 5.0°C
Send cycle
(if sent periodically)
5s• ... • 2 h
Use min. and max. temperature values Yes • No
Use threshold value 1/2/3/4 Yes • No
Temperature threshold value specification
per
Parameter • Communications object
Indoor temperature threshold value in
0.1°C
T-UN 130: -300 … 1300; 200
T-UN 100: -350 … 1000; 200
Hysteresis of the threshold value in % 0 … 50; 20

12 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
Threshold value setpoint using a communications object:
Beforehand, enter how the threshold value will be received from the bus. Basically, a
new value can be received, or simply a command to increase or decrease.
During initial commissioning, a threshold value must be defined which will be valid un-
til the first call with of a new threshold value. For units which have already been taken
into service, the last communicated threshold value can be used. Basically, a temper-
ature range is given in which the threshold value can be changed (object value limit).
A set threshold value will be retained until a new value or a change is transferred. The
current value is saved in EEPROM, so that this is retained in the event of a power sup-
ply failure and will be available once the power supply is restored.
Temperature switch output
Set the behaviour of the switching output when a threshold value is exceeded/under-
cut. The output switching delay can be set using objects or directly as a parameter.
Temperature threshold value specification
per
Parameter • Communications objects
The last communicated value should • never be retained
• be retained after power restoration
• be retained after power restoration and
programming.
Start temperature threshold value in 0.1°C
valid until first call
T-UN 130: -300 … 1300; 200
T-UN 100: -350 … 1000; 200
Type of threshold value change Absolute value • Increase/decrease
Step size
(upon increase/decrease change)
0.1°C • 0.2°C • ... • 1°C • ... • 5°C
Hysteresis of the threshold value in % 0 … 50; 20
When the following conditions apply, the
output is
(LV = Threshold value)
• TV above = 1 | TV - Hyst. below = 0
• TV above = 0 | TV - Hyst. below = 1
• LV below = 1 |LV + hysteresis above = 0
• LV below = 0 |LV + hysteresis above = 1
Switching delay from 0 to 1 None • 1 s • 2 s • 5 s • 10 s • … • 2 h
Switching delay from 1 to 0 None • 1 s • 2 s • 5 s • 10 s • … • 2 h
Switching output sends • on change
• on change to 1
• on change to 0
• on change and periodically
• on change to 1 and periodically
• on change to 0 and periodically
Send temperature switching output in the
cycle of
(only if sent periodically)
5s• 10 s • 30 s… • 2 h

13 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
Block
The switching output can be blocked using an object. Define specifications here for the
behaviour of the output when blocked.
The behaviour of the switching output on release is dependent on the value of the pa-
rameter "Switching output sends" (see "Switching output")
5.5. Temperature PI controller
Activate the controller if required.
General control
Then define the type of setting. Heating and/or cooling may be controlled in two stages.
Use temperature switching output block No • Yes
Analysis of the temperature blocking object • At value 1: block | At value 0: release
• At value 0: block | At value 1: release
Value of the temperature blocking object
before first call
0• 1
Behaviour of the switching output
On block • Do not send message
• send 0
• send 1
On release
(with 2 seconds release delay)
[Dependent on the "Switching output
sends" setting]
Switching output sends on change • Do not send message
• Send switching output status
Switching output sends on change to 1 • Do not send message
• if switching output = 1 send 1
Switching output sends on change to 0 • Do not send message
• if switching output = 0 send 0
Switching output sends on change and
periodically
Send switching output status
Switching output sends on change to 1 and
periodically
if switching output = 1 send 1
Switching output sends on change to 0 and
periodically
• if switching output = 0 send 0
Use controller Yes • No
Type of control • Single stage heating
• Dual-stage heating
• Single-stage cooling
• Single-stage heating + single-stage cooling
• Dual-stage heating + single-stage cooling
• Dual-stage heating + dual-stage cooling

14 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
Then configure a temperature control block by the blocking object.
Specify when the current control variables are to be sent to the bus. Periodic transmis-
sion is safer if a message does not reach a recipient. You may also set up periodical
monitoring by the actuator with this setting.
Controller setpoint
Specified setpoint per parameter:
Set the setpoint.
Specifying a setpoint per communications object:
A starting setpoint value is defined as well as a temperature range in which the setpoint
value may be changed.
Behaviour of the blocking object with value • 1 = Blocking regulation |
0 = Releasing regulation
• 0 = Blocking regulation |
1 = Releasing regulation
Blocking object value
before first call
0• 1
Transmit control variable • on change
• on change and periodically
Send cycle
(is sent only if "periodically" is selected)
5 s • … • 5 min • ... • 2 h
Specified setpoint using Parameter • Communications object
Specified setpoint using Parameter
Setpoint in 0.1°C -300 … 800; 200
Specified setpoint using Communications object
The last communicated value
should
• never be retained
• be retained after power restoration
• be retained after power restoration and
programming (not to be used for
first commissioning)
Start setpoint in 0.1 °C
valid until first call
(only if the last retained value is "not"
retained, or retained "after power restora-
tion")
-300 … 800; 200
Object value limit (min) in 0.1°C -300 … 800; 140
Object value limit (max) in 0.1°C -300 … 800; 250
Type of setpoint value change • Absolute value
• Increase / Decrease
Step size
(only when "increasing/decreasing")
0.1°C • 0.2°C • 0.3°C • 0.4°C • 0.5°C • 1°C •
2°C • 3°C • 4°C • 5°C

15 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
Heating control level (1./2. level)
If a heating control mode is configured, one or two setting sections for the heating lev-
els are displayed.
In the first level, heating is controlled by a PI controller which allows to either enter con-
trol parameters or select predetermined applications.
In the second level (therefore only in case of 2-stage heating), heating is controlled via
a PI or a 2-point-control.
In stage 2, the setpoint deviation between the two stages must also be specified, i.e.
beyond which setpoint undershoot the second stage is then added.
PI controller with control parameters:
This setting allows individual input of the parameters for PI control.
Specify the deviation from the setpoint value at which the maximum control variable
value is reached, i.e. the point at which maximum heating power is activated.
The reset time shows how quickly the controller responds to deviations from the target
value. In case of a short reset time, the control responds with a fast increase of the con-
trol variable. In case of a long reset time, the control responds somewhat less urgently
and needs longer until the necessary control variable for the target value deviation is
reached.
You should set the time appropriate to the heating system at this point (observe man-
ufacturer's instructions).
Now specify what should be sent when the control is blocked. Set a value greater 0
(=OFF) to receive a basic heating level, e.g. for floor heating.
On release, the control variable follows the rule again.
setpoint value difference between first and
second stages (in 0.1°C)
only for stage 2
0...100; 40
Control type
only for stage 2
• 2-point-control
• PI control
Control type
only for second stage
• PI control
Setting of the controller by • Controller parameter
• specified applications
Maximum control variable is reached
at set point/actual difference of (in °C)
0...5
Reset time (in min.) 1...255; 30
When blocked, the control variable shall • not be sent
• send a specific value
Value (in %)
only if a value is sent
0...100

16 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
In case of a common control variable for heating and cooling, 0 is always transmitted
as a fixed value.
PI control with predetermined application:
This setting provides fixed parameters for frequent applications.
Now specify what should be sent when the control is blocked. Set a value greater 0
(=OFF) to receive a basic heating level, e.g. for floor heating.
On release, the control variable follows the rule again.
In case of a common control variable for heating and cooling, 0 is always transmitted
as a fixed value.
2-point-control (only stage 2):
2-point-control is used for systems which are only set to ON or OFF.
Enter the hysteresis that prevents frequent on/off switching of temperatures in the
threshold range. Then set whether a 1-bit object (on/off) or an 8-bit object (on with per-
centage/off) should be used.
Control type
only for second stage
• PI control
Setting of the controller by • Controller parameter
• specified applications
Application • Warm water heating
• Floor heating
• Convection unit
• Electric heating
Maximum control variable is reached
at set point/actual difference of (in °C)
Warm water heating: 5
Floor heating: 5
Convection unit: 4
Electric heating: 4
Reset time (in min.) Warm water heating: 150
Floor heating: 240
Convection unit: 90
Electric heating: 100
When blocked, the control variable shall • not be sent
• send a specific value
Value (in %)
only if a value is sent
0...100
Control type • 2-point-control
Hysteresis (in 0.1°C) 0...100; 20
Control variable is on • 1-bit object
• 8-bit object
Value (in %)
only for 8-bit objects
0...100

17 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
Now specify what should be sent when the control is blocked. Set a value greater 0
(=OFF) to receive a basic heating level, e.g. for floor heating.
On release, the control variable follows the rule again.
Cooling control level (1./2. level)
If a cooling control mode is configured, one or two setting sections for the cooling lev-
els are displayed.
In the first stage, cooling is controlled by a PI controller in which either control param-
eters or predetermined applications can be selected.
In the second stage (therefore only ifor 2-stage cooling), cooling is controlled via a PI
or a 2-point-control.
In stage 2, the setpoint deviation between the two levels must also be specified, i.e. be-
yond which setpoint value undershoot the second stage is then added.
PI controller with control parameters:
This setting allows individual input of the parameters for PI control.
Specify the deviation from the set point value which reaches maximum variable value,
i.e. the point at which maximum cooling power is activated.
The reset time shows how quickly the controller responds to deviations from the target
value. In case of a short reset time, the control responds with a fast increase of the con-
trol variable. In case of a long reset time, the control responds somewhat less urgently
and needs longer until the necessary control variable for the target value deviation is
reached.
You should set the time appropriate to the cooling system at this point (observe man-
ufacturer's instructions).
When blocked, the control variable shall • not be sent
• send a specific value
Value
only if a value is sent
0• 1
setpoint value difference between first and
second stages (in 0.1°C)
only for stage 2
0...100; 40
Type of controls for the second stage • 2-point-control
• PI control
Control type
only for second stage
• PI control
Setting of the controller by • Controller parameter
• specified applications
Maximum control variable is reached
at set point/actual difference of (in °C)
0...5
Reset time (in min.) 1...255; 30

18 Parameter settings
Temperature Sensor KNX T-UN • Version: 27.01.2020 • Technical changes and errors excepted.
Now specify what should be sent when the control is blocked.
On release, the control variable follows the rule again.
PI control with predetermined application:
This setting provides fixed parameters for a cooling ceiling
Now specify what should be sent when the control is blocked.
On release, the control variable follows the rule again.
2-point-control (only stage 2):
The 2-point-control is used for systems which are only set to ON or OFF.
Enter the hysteresis that prevents frequent on/off switching of temperatures in the
threshold range. Then set whether a 1 bit object (on/off) or an 8 bit object (on with per-
centage/off) should be used.
When blocked, the control variable shall • not be sent
• send a specific value
Value (in %)
only if a value is sent
0...100
Control type
only for second stage
• PI control
Setting of the controller by • Controller parameter
• specified applications
Application • Cooling ceiling
Maximum control variable is reached
at set point/actual difference of (in °C)
Cooling ceiling: 5
Reset time (in min.) Cooling ceiling: 30
When blocked, the control variable shall • not be sent
• send a specific value
Value (in %)
only if a value is sent
0...100
Value (in %)
only if a value is sent
0...100
Control type • 2-point-control
Hysteresis (in 0.1°C) 0...100; 20
Control variable is on • 1-bit object
• 8-bit object
Value (in %)
only for 8-bit objects
0...100