Ekinex 71 Series Instructions for use

Application manual
KNX Room Temperature controller
71 series EK-E72-TP

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
© SBS S.p.A. - All rights reserved Page 2
Index
Foreword.............................................................................................................................................................6
1General information.......................................................................................................................................6
1.1 Function .................................................................................................................................................6
1.2 Main functional features.........................................................................................................................6
1.3 Technical data........................................................................................................................................7
1.4 Design....................................................................................................................................................7
1.5 Delivery..................................................................................................................................................8
1.6 Accessories............................................................................................................................................8
1.7 Marks and certification...........................................................................................................................8
2Installation......................................................................................................................................................9
2.1 Connection...........................................................................................................................................10
3Configuration and commissioning ...............................................................................................................11
3.1 Configuration........................................................................................................................................11
3.1.1 Tree structure of the application program ....................................................................................12
3.1.2 Languages of the application program.........................................................................................12
3.2 Commissioning ....................................................................................................................................13
3.2.1 Displaying physical address and firmware release......................................................................13
4User interface ..............................................................................................................................................15
4.1 LCD display..........................................................................................................................................15
4.1.1 Information displaying ..................................................................................................................15
4.1.2 Segment test................................................................................................................................17
4.1.3 Backlight.......................................................................................................................................17
5Temperature sensor.....................................................................................................................................18
6Input variables .............................................................................................................................................19
7Application program for ETS .......................................................................................................................20
7.1 About EK-E72-TP ................................................................................................................................21
7.2 General ................................................................................................................................................21
7.2.1 Parameter table............................................................................................................................21
7.2.2 Operating mode management .....................................................................................................23
7.3 Internal sensors ...................................................................................................................................24
7.3.1 Parameter and communication objects tables.............................................................................24
7.4 External sensors (from bus).................................................................................................................26
7.4.1 Parameter and communication object tables...............................................................................26
7.5 Weighted temperature value................................................................................................................30
7.5.1 Parameter and communication object tables...............................................................................30
7.6 LCD display..........................................................................................................................................31
7.6.1 Parameters...................................................................................................................................31
7.7 Leds intensity.......................................................................................................................................33
7.7.1 Parameter and communication object tables...............................................................................33

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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7.8 Temperature control.............................................................................................................................34
7.8.1 Settings ........................................................................................................................................34
7.8.1.1 Parameter and communication object tables............................................................ 34
7.8.1.2 Heating/cooling switchover ....................................................................................... 37
7.8.1.3 Valve protection function........................................................................................... 38
7.8.1.4 Remote Setpoint modification................................................................................... 38
7.8.1.5 Remote operative mode modification ....................................................................... 39
7.8.2 Heating.........................................................................................................................................40
7.8.2.1 Parameter and communication object tables............................................................ 40
7.8.3 Cooling.........................................................................................................................................45
7.8.3.1 Parameter and communication object tables............................................................ 45
7.8.4 Main and auxiliary ventilation.......................................................................................................50
7.8.4.1 Parameter and communication object tables............................................................ 50
7.8.4.2 Delayed fan start (“hot-start”) .................................................................................... 53
7.8.4.3 Antistratification function ........................................................................................... 53
7.8.4.4 2-stage configuration with fan-coils as auxiliary stage.............................................. 53
7.8.4.5 Remote fan speed modification................................................................................. 54
7.8.5 Scenes .........................................................................................................................................56
7.8.5.1 Parameter and communication object tables............................................................ 56
7.9 Relative humidity control......................................................................................................................58
7.9.1 Dehumidification...........................................................................................................................58
7.9.1.1 Parameter and communication object tables............................................................ 58
7.9.2 Humidification...............................................................................................................................61
7.9.2.1 Parameter and communication object tables............................................................ 61
7.10 Comfort ................................................................................................................................................62
7.10.1 Comfort area ................................................................................................................................62
7.10.1.1 Parameter and communication object tables............................................................ 62
7.10.2 Calculated psychrometric values .................................................................................................63
7.10.2.1 Parameter and communication object tables............................................................ 63
7.11 Energy saving ......................................................................................................................................65
7.11.1 Window contacts..........................................................................................................................65
7.11.1.1 Parameter and communication object tables............................................................ 65
7.11.2 Presence sensors ........................................................................................................................66
7.11.2.1 Parameter and communication object tables............................................................ 66
7.11.3 Card holder...................................................................................................................................67
7.11.3.1 Parameter and communication object tables............................................................ 67
7.12 Logic functions.....................................................................................................................................69
7.12.1 Parameter and communication object tables...............................................................................69
8List of communication objects .....................................................................................................................71
9Control algorithms .......................................................................................................................................74

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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9.1 Two-point control with hysteresis.........................................................................................................74
9.2 Continuous Proportional-Integral control.............................................................................................76
9.3 PWM Proportional-Integral controll......................................................................................................77
9.4 Fan-coils with On / Off fan speed control.............................................................................................79
9.5 Fan coil with fan speed continuous control..........................................................................................81
9.6 2-point control with hysteresis for auxiliary heating / cooling system..................................................83
9.7 Auxiliaty stage with fan coil..................................................................................................................84
10 Diagnostics..................................................................................................................................................85
11 Warnings......................................................................................................................................................86
12 Other information.........................................................................................................................................86

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
© SBS S.p.A. - All rights reserved Page 5
Revision
Updating
Date
3.00
ETS application version: VER 3.00.
Modified features:
Communication objects added:
74 Building protection HVAC mode active
75 Fan manual speed percentage
76 Fan manual speed off status
20/03/2017
2.00
ETS application version: VER 2.00.
Modified features:
Heating/cooling status out and Heating/cooling status in communication objects (more enhanced
management)
20/06/2016
1.00
Emission
10/03/2016
The latest revision of the application manual is available at www.ekinex.com. For previous revisions, contact
the technical support at [e-mail].

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
© SBS S.p.A. - All rights reserved Page 6
Foreword
The present document describes the ekinex® KNX room temperature controller with LCD display 71 series
version EK-E72-TP.
1 General information
The device described in the present document works as an electronic digital temperature controller for a
room or a zone (consisting e.g. in a group of rooms or a whole floor) of a building and is part of the
secundary regulation for heating and cooling. The room temperature controller was developed according to
the KNX standard for use in systems of control of homes and buildings.
Through the integrated sensor, the device can measure directly the room temperature value that can be
used for control and regulation tasks of heating, cooling and ventilation. Via the bus the device can
furthermore receive temperature values from other bus devices. The integrated display visualizes a series of
information concerning the room controller function. The device is provided with two rockers that can be used
for controlling the thermostat function. The device, if configured to receive a room relative humidity value by
the bus, can also report if the room or the zone are in a configurable thermal comfort range, depending on
the building intended use, activity and other specific factors.
1.1 Function
The main function of the device is to control the temperature of the air mass of the room by means of the
actual temperature (Teff), measured by the device itself or received by the bus, and of the setpoint
temperature (Tset) set by the user; comparing the two values and a series of parameters set before the
commissioning, the regulation algorithm of the device calculates the control variable value that is converted
to a telegram and transmitted on the bus toward KNX actuators (such as binary outputs, fan-coli controllers,
valve drives, etc.) able to control the operation of heating and cooling terminal units.
1.2 Main functional features
The main functions carried out by the device are:
•temperature measuring with possibility of sending the values on the bus;
•2-points (on/off) or proportional (PWM or continuous) room temperature regulation;
•ventilation control with continuous or 3-speed regulation;
•relative humidity regulation by humidification or dehumidification if a relative humidity value is
acquired by a KNX probe;
•seasonal modes: heating and cooling with local or via bus switch-over;
•operating modes: comfort, standby, economy and building protection with separate setpoint values
for heating and cooling;
•manual or automatic control of a fan-coil unit with 2-pipes or 4-pipes connection;
•automatic switching of the operating mode when presence/absence of people or window opening is
detected;
•weighted average of two temperature values;
•temperature displaying (measured, setpoint and outdoor values in °C or °F), alarms and errors (with
alphanumeric codification);
•signaling opening windows;
•limitation of the surface temperature for floor heating radiant panels;

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
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•anticondensation protection for floor and ceiling cooling radiant panels;
•antistratification function;
•delayed fan start (“hot-start” function) time-scheduled or depending on the conveying fluid
temperature measured at the coil battery;
•Comfort area (configurable) internal or external condition sending on the bus;
1.3 Technical data
Feature
Valore
Device
KNX S-mode bus device
Communication
according KNX TP1 standard
Use
dry internal rooms
Environmental conditions
• Operating temperature: - 5 ... + 45°C
• Storage temperature: - 25 ... + 55°C
• Transport temperature: - 25 ... + 70°C
• Relative hunidity: 95% not condensating
Power supply
SELV 30 Vdc from bus KNX (auxiliary power supply not necessary)
Current consumption from bus
< 13 mA
Switching elements
4 frontal capacitive touch buttons. Direct access to 4 independent functions trough short press
(< 5 s). Indirect access to other functions by long press (> 5 s).
Programming elements
1 pushbutton and 1 LED (red) on the front side
Display elements
1 backlighted LCD display
Temperature sensor
1 integrated NTC-type
Installation
On round or square wall-mounting box with distance between fixing holes of 60 mm
Connection
• bus: black/red KNX terminal block
Protection degree
IP20
Dimensions (WxHxD)
81 x 77 x 24 mm
1.4 Design
The device is realised for wall-mounting on round or square wall box with distance between fixing holes of 60
mm. The programming pushbutton and the programming led are on the front side under the transparent
display protection screen. On the rear side of the housing there is the terminal block for the connection of the
bus.

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
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Device execution: frontal and lateral view
1.5 Delivery
The delivery includes the metallic support for mounting on the round 60 mm wall box, the screws (2 pairs), a
plastic adapter and the terminal block for the connection of the bus. The plate and the frame (if present) must
be ordered separately. For further information please refer to ekinex® product catalog or visit
www.ekinex.com.
1.6 Accessories
The device is completed with a 1 or 2 place plate, in combination with another series 71 device or a civilian
55x55 mm series component, that have to be ordered separately. An ekinex®Form o Flank frame is also
required (except for ‘NF - No Frame version).
Code
Mounting
plate
Adapter
Frame
EK-E72-TP
With frame Form or Flank
series
EK-PQS-…, 1 place, 60x60
EK-P2G-…, 2 places, 55x55,
60x60
EK-P2S-…, 2 places, 60x60
Flank or Form,
1-2 places
EK-E72-TP-NF
Without frame (‘NF series),
with black side profile
EK-TAQ-…, 1 place
EK-A71-…, 2 places
EK-E72-TP-NFW
Without rame (‘NF series),
with white side profile
Accessories of the device: set of rockers and frames
1.7 Marks and certification
The KNX mark on the ekinex device ensures interoperability with the KNX devices of SBS and other
manufacturers installed on the same system bus system. The compliance with the applicable European
directives is indicated by the presence of the CE mark.

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
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2 Installation
The device has degree of protection IP20, and is therefore suitable for use in dry interior rooms. The
installation of the device requires the following steps:
a) fix the metallic support with the screws supplied on a wall box with suitable fixing holes. It is
recommended to install the device at a height of 150 cm;
b) snap a square frame of the form or flank series, inserting it from the rear of the device;
c) insert the terminal for the bus, previously connected to the bus cable, in its slot on the rear side.
Connect the sensors (if foreseen) to the device inputs. At this point it is recommended to carry out
the commissioning of the device or at least the download of the physical address;
d) install the device on the metallic support through the spring system, tightening then the two screws
requires also to tighten the screws included in the delivery. For mounting the device follow also the
indication TOP (arrow tip pointing up) on the rear side of the device;.
The device can only be mounted on a round or square wall flush mounting box with 60 mm distance between
fixing holes. If necessary, the metallic support for mounting on the wall box can also be ordered separately.

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
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2.1 Connection
For the operation the device has to be connected to the bus line and addressed, configured and
commissioned with ETS (Engineering Tool Software).
Connection of the bus line
The connection of the KNX bus line is made with the terminal block (red/black) included in delivery and
inserted into the slot of the housing.
Characteristics of the KNX terminal block
•spring clamping of conductors
•4 seats for conductors for each polarity
•terminal suitable for KNX bus cable with single-wire conductors and diameter between 0.6 and 0.8
mm
•recommended wire stripping approx. 5 mm
•color codification: red = + (positive) bus conductor, black = - (negative) bus conductor
Connection of the device of the bus line
Bus
KNX
+
-

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
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3 Configuration and commissioning
The configuration and commissioning are carried out with the ETS (Engineering Tool Software) tool and the
ekinex®application program provided free of charge by SBS; you do not need any additional software or
plug-in tool. For further information on ETS see also www.knx.org.
3.1 Configuration
The device functionality is defined by the settings done via software. The configuration requires necessarily
ETS4 (or later releases) and the ekinex® APEKE72TP##.knxprod (## = release) application program that can
be downloaded from the website www.ekinex.com. The application program allows the configuration of all
working parameters for the device. The device-specific application program has to be loaded into ETS or, as
alternative, the whole ekinex®product database can be loaded; at this point, all the instances of the selected
device type can be added to the project. The configurable parameter details are described in this application
manual.
Application program for ETS APEKE72TP##.knxprod (## = version)

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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3.1.1 Tree structure of the application program
At its opening, the tree structure of the program includes the following main items:
About EK-E72-TP
General
Temperature sensor
External sensors (from bus)
LCD Display
LED
Settings
Heating
Temperature control
Relative humidity control
Comfort area
Calculated psychrometric values
Comfort
Windows contacts
Presence sensors
Card holder
Energy saving
Logic functions
Other items may appear depending on the choices done for the parameters of the folders.
3.1.2 Languages of the application program
The application program is available in four languages: English, Italian, German and French. The language
displayed can be changed in ETS choosing "Settings / Presentation language".

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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3.2 Commissioning
For the commissioning the device is provided on the front side (in the area usually occupied by the rockers)
of:
•a red LED (1) for indication of the active operating mode (LED on = programming, LED off = normal
operation);
•a pushbutton (2) for switching between the normal and programming operating mode.
Device programming: led (1) and pushbutton (2)
Important! During commissioning, the device performs a starting phase consisting in a self-
calibration of the capacitive keys. It is recommended to connect the bus terminal avoiding to
manipulate the thermostat in the front or otherwise interfering with the keys: this can lead to
unexpected reactions to key pressing during normal operation of the device.
For commissioning the device the following activities are required:
•make the electrical connections;
•turn on the bus power supply;
•switch the device operation to the programming mode by pressing the
programming pushbutton located on the front side of the housing. In this
mode of operation, the programming LED is turned on;
•download into the device the physical address and the configuration with the
ETS®program.
When downloading the application program the display shows "PrOg" and the
flashing symbol of the clock. At the end of the download the operation of the device
automatically returns to normal mode; in this mode the programming LED is turned
off. Now the bus device is programmed and ready for use.
3.2.1 Displaying physical address and firmware release
Once the first addressing is done, you can check anytime the physical address and the firmware release
directly on the device display. In order to display it, press for more than 3 seconds the –(minus) symbol on
the lower-left touch button and the (circle) symbol on the upper-right touch button. All segments of the
display are turned off; displaying a physical address only the 3 large digits and the small one are active. The
information displayed in sequence are: the area number (A), the line number (L), the device number (d) and
i
2
1
2
2

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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the firmware release (F). To scroll through the three elements of the physical address press + or –. For
example:
Example of displaying the physical address 10.5.43 (device nr. 43, installed on the line 5 of the area 10) and the firmware release 001
To exit from the physical address displaying press shortly (< 3 seconds) the symbol on the lower right side.
If you elapse of time interval set in parameter “Time to exit change without saving” without pressing any
rocker, the device returns automatically to the previously displayed information.

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
Release 3.00 - Updating: 20/03/2017 Application Manual
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4 User interface
The user interface of the room temperature controller includes a LCD display and 4 capacitive touch
pushbuttons located near the angles of the plastic case.
User interface: LCD display (1), toch buttons (2)
The symbols on the rockers recall the function carried out:
+temperature or fan speed increase;
‒temperature or fan speed decrease;
information sequence, operating mode change, ventilation control, seasonal change-over.
Through a combined pressure of various symbols other functions can be carried out.
4.1 LCD display
The device is provided with a LCD display (1) with adjustable backlight that occupies a vertical area of
approx. 28 x 48 mm (WxH) in the central area of the device. Thanks to the integrated brightness sensor, you
can set the automatic adjustment of the backlight intensity according to the room brightness conditions.
4.1.1 Information displaying
Depending on the configuration done with ETS, the connections and the availability of information (local or
received from the bus), the series of symbols allow to display:
room actual temperature (it may be the temperature calculated using a weighted average of two
values);
outdoor temperature, preceded by a ‒ (minus) sign in case of outdoor temperature below 0°C;
room relative humidity value (%, without decimals);
preceived temperature (calculated using actual temperature and relative humidity);
temperature setpoint (for the actual operating mode);
alarm and error condition (A01, A02… E01, E02…);
window opening;
2
2
2
1
2
2

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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operating mode (comfort / standby / economy / building protection);
seasonal mode (heating / cooling);
device status calling / not calling (or setpoint reached / not reached);
operation in manual mode (M);
operation as slave device (clock);
fan status (1-2-3-automatic-off), when present;
device physical address assigned by ETS.
Display symbols
Digits (for numeric values display)
Heating mode active (device not calling
or setpoint reached)
Celsius degrees
Heating mode active (device calling or
setpoint not reached)
Fahrenheit degrees
Manual operation (M)
Percentage (relative humidity)
Cooling mode active (device not calling
or setpoint reached)
Indoor temperature
Cooling mode active (device calling or
setpoint not reached)
Outdoor temperature
Slave (operation subordinated to a
supervising KNX device)
SET
OFF (fan-coil switched off)
Alarm
Automatic fan-coil operation (example:
speed 3)
Building protection operating mode
(off)
Manual fan-coil operation (example:
speed 2)
Economy operating mode (night)
Standby operating mode
Comfort operating mode
Symbols that can be activated on the LCD display

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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4.1.2 Segment test
The segment test allows you to check at any time the proper functionality of the display. In order to do the
test, press simultaneously + (plus) on the upper-right side and the symbol on the lower-left side for more
than 3 seconds. All symbols are activated simultaneously; then all the symbols are turned off. In the test
phase keep available the instructions or the user guide.
If you elapse the time set in the parameter "Time to exit change without saving" (General folder) without
pressing a button, the device will return to the previous situation.
4.1.3 Backlight
The backlight intensity of the LCD display is adjustable. The first setting is done when configuring the device
using ETS, but the intensity can be changed later at any time.
To access the change press simultaneously + (plus) and on theupper-righ side for more than 3 seconds.
All symbols are turned off except the digits and the percentage symbol. The actual value (as a percentage)
of backlight intensity is displayed. At each pressing of + or –the intensity is increased or decreased by 5%.
To confirm the selected intensity press shortly (< 3 seconds) the symbol either on the upper-right side.
Three rapid flashes of the digits indicate that the new value was saved. If you elapse of time interval set in
the "Time to exit change without saving " (General folder) without pressing any rocker, the device returns to
the previous situation.

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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5 Temperature sensor
The integrated temperature sensor allows the measureming of the room temperature in the range from 0 °C
to +40 °C with a resolution of 0.1 °C. To keep into account significant environmental interferences such as
the proximity to heatsources, the installation on an outer wall, the chimney effect due to rising warm air
through the corrugated tube connected to the wall-mounting box, the measured value can be corrected by
means of a offset of ± 5 K or, preferably, can be used a weighted average between two values of
temperature chosen from the following ones: value measured by the integrated sensor, value measured by a
temperature sensor connected to one of the inputs of the device, value received via bus from another KNX
device (such as ekinex pushbuttons).
Positioning of the sensors: temperature (1)
The temperature sensor (not to be seen in the drawing) is located under the plastic half-shell.
2
1

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KNX Room Temperature controller 71 series EK-E72-TP
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6 Input variables
The data that the device usesin its control algorithms and /or to be displayed may come from:
•the internal sensors;
•the KNX bus through standard Communication Objects.
The processed data can also be transmitted on the KNX bus as Communication Objects.The classification of
the input variables is shown in the following table.
Data
Coming from
Description
Room temperature
Internal sensor
Analogic value for thermoregulation functions
Room brightness
Object 4 (from bus)
Room temperature
KNX bus (through
communication
objects)
Object 5 (2 bytes)
Room relative humidity
Objects 7 (1 byte or 2 bytes)
Antistratification temperature
Object 8 (2 bytes)
Outdoor temperature
Object 9 (2 bytes)
Exchange coil temperature
Object 10 (2 bytes)
Floor surface temperature
Object 11 (2 bytes)
Conveying fluid flow temperature
Object 12 (2 bytes)
Presence of condensation
Object 18 (1 bit)
Window state (open/close)
Objects 13 e 14 (1 bit)
Presence of people in the room
Objects 15 e 16 (1 bit)
Card holder state (badge in/out)
Object 17 (1 bit)
Input variables from internal sensors, physical inputs and standard communication objects.
The device does not have outputs for direct switching or control of heating /cooling terminals or for status or
values signalling. The output variables include exclusively communication objects that are sent on the bus,
received and processed by KNX actuators (general-purpose or dedicated to HVAC applications).

Application manual
KNX Room Temperature controller 71 series EK-E72-TP
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7 Application program for ETS
In the following chapters there is the list of folder, parameters and communication objects of the application
program. Some specific functions of the thermostat are described in more detail in the dedicated paragraphs.
The tree structure of the application program as imported into ETS (or by pressing the "Default Parameters"
button of ETS) is the following:
About EK-E72-TP
General
Temperature sensor
External sensors (from bus)
LCD Display
LED
Settings
Heating
Temperature control
Relative humidity control
Comfort area
Calculated psychrometric values
Comfort
Windows contacts
Presence sensors
Card holder
Energy saving
Logic functions
Other folders may appear depending on the choices done for the parameters of the folders represented in
the main tree structure.