KNX_Introduction.pdf

Schneider Electric 2
- ISC Training Academy- March 2010
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KNX Basics
Topics
KNX applications at home
KNX installation
KNX operation/configuration
KNX history / KNX association
What is KNX?
SE KNX product portfolio
KNX benefits
KNX applications in the office
Savings
KNX components

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What is KNX?
The three letters “KNX” stands for:
…………………………………….
However….
●KNX is a bus system
●KNX is a world standard
●KNX brings building functions together
●KNX offers flexibility, safety, comfort and cost efficiency

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Conventional installation
●Every function is realized with one or
more cables
●More functions = more cables
●Each function must be planned in detail
before installation
●If a function should be changed, the
physical installation has to be changed
●Each device is used for one function only
●Even low level interaction between
different functions become complex and
cost intensive

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Bus installation
●Separation of information and energy
●Only one cable (the bus) for all
information = less control cables
●Functions depends on programming
= logical connections between inputs
and outputs replaces physical
connections
●Change of functions without touching
the installation is possible
●Multiple use of single devices
●Complex interaction between
different functions are easy
Bus
230 V

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KNX – the world´s only open STANDARD
for home and building control
●European standard – EN 50090
●Worldwide standard – ISO/IEC 14543
●The KNX-system…
● is truly open and platform independent
● guarantees multi-vendor and cross-discipline
interoperability, ensured via certification
● is based on 15 years experience from the EIB
market and the EIB technology and extended
with additional media, configuration methods
and experience from BatiBUS and EHS
●Several thousands of products from over
hundred manufacturers are easily available

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Here starts the public road
Building functions
Generally handled by KNX
●Lighting
on/off, dimming
●Heating/Cooling/Ventilation
on/off, continuous (valves, heaters, dampers, fans)
●Blinds and other drives
up/down, position (venetian blinds, shutters)
●Any other electrical consumer
●Surveillance / Alarms
●Measuring / Metering
●Gateways to other systems
●Signal transmission for other systems

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Control and Monitoring of Building functions
Examples
● Manually e.g. push-buttons
● Movement dependent
● Time dependent
● Brightness dependent
● Temperature dependent
● Weather dependent
● State (contact) dependent
● Mix/Other dependencies
● Locally/Centrally
● Individually/Group
● Scene control
● Multifunctional Displays
● Building management/SCADA-system
(Supervisory Control and Data Acquisition)

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Benefits
bus system, standard, multi-trade
● Flexibility
Planning, Installation, Adaptation, Use, Multi-vendor
● Safety and security
Monitoring, Alarm, Fire load, Technology
● Comfort
Easiness, Automatic, Scenes, Design
● Cost efficiency
Energy efficiency, Adaptations, Maintenance, Multi-vendor

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Which components does the KNX-system
consist of?
●System components
– Components to build the communicating
network, e.g. power supply
●Sensors
– Receives an external command
– Transform it to KNX-information
– Sends the information as telegram on the bus
●Actuators
– Receives telegram from the bus
– Processes the information
– Execute the function

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KNX – base components
Sensors
●Pushbuttons, thermostats, analogue
and digital inputs, timers, sensors for
wind, rain, light, heating, motion etc.
●Function => Sensors record
information like a simple switching or
environmental condition that is
transmitted to the bus in the form of a
data telegram.

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Actuators
●Switch actuators, dimming actuators,
blind actuators, heating actuators,
visualisation
●Function => Actuators receive data
telegrams and convert these into e.g.
switching/dimming signals or even
visualise states.

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ETS software
● The manufacturer independent
Engineering Tool Software enables to
project, commission, document and
diagnose a KNX installation.
● The device-function related application
programs are part of the free available
manufacturer product database. They are
loaded into the devices by the ETS via
the USB interface of a PC and the bus.
● Besides a onetime fee for the ETS-tool,
no additional costs for projecting and
commissioning will be charged.
● => By now more than 15.000 ETS-
licenses sold!

SE KNX product portfolio
Overview

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The visible parts of the system!
Push-buttons
●Control the functions with push-buttons
in excellent design of your choice
System M
4-gang
Artec
4-gang
Unica
2-gang
Altira
2-gang

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Room Temperature Control units
●Control the temperature with controllers
in excellent design of your choice
System M Artec Unica Altira

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●Control the functions automatically
by movement
● ARGUS 220 IP 55
● ARGUS Presence
● Basic
● Standard
● Light control and IR
● ARGUS 180 Flush mounted
● System M (1m and 2,2m over floor)
● Artec (1m over floor)
● Unica (2,2m over floor)
● Altira (2,2m over floor)
Movement/Presence detectors

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●Control and monitor functions with touch panels
Touch Panels
7” touch panel for residential 10” touch panel for buildings

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●Switch actuators
●Blind actuators
●Dimming actuators
●Control units 0-10V
●DALI-gateways
●Analog actuators
●Heating actuators
●Valve drives
●Fan-coil actuator
The invisible parts of the system!
Actuators

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●Binary inputs
●Analog inputs
●Brightness sensors
●Weather stations
●Time switches
Sensors

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●Power supplies with backup
●Line/Area coupler
●KNX/IP-router
●USB-interface
System components

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16A
L1
L2
L3
16A
16A
N
PE
M
Power supply Switch actuator Dimmer actuator Shutter actuator
Push-button Push-button with room
temperature controller
Binary input Valve drive
Topology within one bus line
• Free topology (mix of line,
tree and star, but no loop)
• max. 64 bus devices
• max. 1000 m bus cable
• max. 350 m between
power supply and device
• min. 200 m between two
power supplies
Bus cable
Example of connection within a bus line

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Bus cable installation (twisted pair, TP)
Free topology
●The topologies line, star and tree can be combined
●Rings have to be avoided
●KNX does not require terminating resistors
Line
Tree
Star

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Bus cable
● Data transfer and power supply via 2 twisted wires (red/black)
● Spare pair (yellow/white), usable for example for extra power supply or
cable breakdown supervision
● Installation together with 230/400 V permitted
● Schneider Electric strongly recommends using an KNX/EIB-certified bus
cable, for example:
Type Structure Cabling
YCYM
2 x 2 x 0.8
KNXA guideline (Basis: DIN VDE 0207 and
0815)
Cores: red (+EIB)
black (-EIB)
yellow (free)
white (free)
Fixed cabling: in dry, damp and wet rooms,
for surface mounting, flush mounting, in
pipes. Outdoors, if protected from direct
sunlight.
J-Y (St) Y
2 x 2 x 0.8
EIB version
DIN VDE 0815
Cores: red (+EIB)
black (-EIB)
yellow (free)
white (free)
Fixed cabling: in dry and damp operating
areas, surface mounting, flush mounting, in
pipes outdoors, in and beneath plaster.

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SELV Safety Extra Low Voltage Network
SELV network

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● SELV System allows installation close to mains
● It is allowed to install the bus cable in the same
pipe as power cables / min 19 mm pipes
● Bus and power cable cores may be present in
the same installation box if the safety separation
of the bus and power cable cores in the
installation box is guaranteed by the installation.
E.g. boxes with fixed terminals or partition wall
Fig. 2: Distance between KNX cable and mains
KNX KNX KNX
Bus cable installation

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Bus cable installation
The metal foil shield is
removed. The shield/drain
wires are not earthed and
are not integrated in the
equipotential bonding.
The shields are not
interconnected in the cable
run either.
Example of labelling: KNX line 1.1
The drain wire and the yellow/white wires (unless they
are used) are bent back and isolated (not cutted)
Example of connection of
a push-button interface
Source: KNX Handbook, section 6.6

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Bus connection terminal/
Spare pair branch terminal
Red/Black
● Supplied with almost all bus devices
● Disconnection of device without breaking the bus line
● 4 plug-in terminals per wire
● Can be used for branch off in a conjunction box
Yellow/White
● Branch terminal for the spare pair
● 4 plug-in terminals per wire

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KNX topology
Twisted pair only
230V
230V
9. Up to 15 Areas
3.
4.
1.
230V
1.1.x
1.1.3
1.1.1
1.1.64
1.1.4
1.1.2
1.1.0
2.
1.2.x
1.2.3
1.2.1
1.2.64
1.2.4
1.2.2
1.2.0
5.
1.15.0
1.0.0
6.
7.
2. > 64 devices => New Line
3. Connect 2 Lines = Line couplers
4. Main line of the Area
1. 1 Line = up to 64 devices
5. 1 Area = up to 15 Lines
6. > 15 Lines => New Area
Area 1
Area 2
Area 3...15
2.0.0
230V
7. Connect 2 Areas = Area couplers
8. Area Line (Backbone)
9.
8.
x.0.0

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Area 3...15
KNX topology
Twisted pair and Ethernet backbone
230V
230V
9. Up to 15 Areas
3.
4.
1.
230V
1.1.x
1.1.3
1.1.1
1.1.64
1.1.4
1.1.2
1.1.0
2.
1.2.x
1.2.3
1.2.1
1.2.64
1.2.4
1.2.2
1.2.0
5.
1.15.0
1.0.0
6.
7.
3. Connect 2 Lines = Line couplers
4. Main line of the Area
5. 1 Area = up to 15 Lines
6. > 15 Lines => New Area
Area 1
Area 2 2.0.0
7. Connect 2 Areas = KNX/IP router
Replaces Area Couplers
8. Area Line (Ethernet backbone)
8. Switch/Router

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KNX topology
Twisted pair and Ethernet backbone
230V
3.
1.
230V
1.1.x
1.1.3
1.1.1
1.1.64
1.1.4
1.1.2
1.1.0
2.
1.2.x
1.2.3
1.2.1
1.2.64
1.2.4
1.2.2
1.2.0
5.
x.y.0
3. Connect 2 Lines = KNX/IP router
Replaces Line Couplers
4. Backbone (Ethernet)
No Area Couplers needed
5. Addressing x.y.0 (x, y: 1..15) =
up to 225 lines
4.
Switch/Router

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Topology example
Line 1.6
Line 1.5
Line 1.4
Line 1.3
Line 1.2 Line 1.1
Line 1.0 Line 2.0
Line 2.1
Line 2.2
Line 2.3
Line 2.4
Line 0.0
Building A
Building B

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Example of cable drawing in a private home
●All actuators are placed centralized in
the distribution board with cables going
to each consumer
●Sensors are placed decentralized and
bus cable is going from one sensor to
another

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Individual address
● Each KNX-device receives a unique address
in the system via parameterization (ETS)
● The individual address provides the device
with a name, i.e. a number
● It is divided into Area, Line and Device
number: _ _ . _ _ . _ _ _
● Example:
Area Line Device
1.1.15
● The KNX device must be labelled with the
individual address when it has been
programmed by ETS
● The individual address is used for
programming and service

KNX operation and configuration

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Necessary for design and commissioning
● Product database
Contains the application programs which
finally shall be downloaded into the
products.
For free at: www.schneider-electric.com
or PL@net (Schneider internal)
● ETS3 (Engineering Tool Software)
The tool to design and commission the
KNX-project. The product database must
first be imported into ETS.
Purchase at: www.knx.org
● KNX-products
When the design is finished the
configuration data are downloaded into
the products

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Configuration steps
In the ETS
● Insertion of products in the project
● Assignment of individual addresses
(physical addresses) to the different
devices (for the unique identification of a
sensor or actuator in a KNX installation);
● Selection and setting (parameterization)
of the appropriate application software
for sensors and actuators
● Assignment of group addresses (for
linking the functions of sensors and
actuators).
● Download of the settings into the devices
Parameter settings of Switch actuator 4-gang with
current detection

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Bus access and data exchange
● KNX is a decentralized and event-controlled
bus system, i.e. no central unit, and the bus
is idle (free) if nothing happens or changes
● All connected bus devices can exchange
data between each other, packed into
telegrams and sent over the bus (serial
transmission of “1” and “0”), e.g. from a
sensor (the command output) to one or more
actuators (the command receiver).
● CSMA/CA (Carrier Sense Multiple Access /
Collision Avoidance) is used for bus access
and collision handling
● Transmission rate: 9600 bit/s
● Average transmission time for sending and
confirmation of a telegram is approx. 25 ms

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Practical example
Physical connections - cable
Lamp 1
Lamp 2
Lamp 3
Lamp 4
1.1.1
1.1.2

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Individual light control
● Deactivation of all electrical
consumers via “Central-OFF”-switch
● Individual light settings (scenes),
easily saved and retrieved, also by
remote
● “Panic button” for illuminating the
house and garden if suspicious
noises is heard in the night
● Time switching to simulate presence
during absence or longer holidays
KNX at home!

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Comprehensive signaling
● Warnings regarding open windows
and doors via a touch panel
● Telephone forwarding of alarm
messages, to e.g. a security
company or neighbor
● Deterrence of intruders by means of
movement detectors
● Messages signaling malfunction of
technical devices via e-mail (SMS)
KNX at home!

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Intelligent blind control
● Central control of electrically
operated shutters and blinds at the
press of a button
● Protection from harsh direct sunlight
or bad weather via awnings and
blinds that react to sun and wind
sensors
● Protection from break-ins via time-
controlled shutters and blinds.
KNX at home!

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Precision-timed temperature control
● Pleasant room temperatures via
individual temperature control
(heating and/or cooling)
● Lowering of heating/cooling costs via
timed control of setpoints
● Automatic limitation of heating/cooling
when windows are opened
KNX at home!

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Flexible building management
● Flexible adjustment of building
functions to suit altered usage of
rooms.
● Worldwide access to all building
technology by means KNX Internet
Controller.
● Central monitoring and control of
building technology via PC or Touch
panel.
● Startup of heating by telephone or
mobile before returning from
holidays.
KNX at home!

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Automatic light control
● Time, brightness and/or presence
dependent control of lighting.
● Daylight-dependent adjustment of
lighting via uniform illumination
control.
● Power savings of up to 70% when
combined with our intelligent
temperature control system.
KNX in the office!

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Intelligent blind control
● Control of sun awnings dependent on
current levels of direct sunlight.
● Retraction of blinds by means of wind
sensors in the event of strong winds.
● Adjustment of the angle of blind slats
depending on the current position of
the sun.
● Individual manual control via push-
button
KNX in the office!

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Individual climate control
● Rooms heated/cooled depending on
occupancy.
● Immediate closure of the
heating/cooling valves when a window
is opened
● Individual, precision-timed supply of
heating/cooling by means of
controllable room temperature
controllers
● No more manual adjustment of
radiators.
● Heating and cooling controlled in
sequence
KNX in the office!

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Flexible building management
● Flexible adjustment of building
functions to suit altered usage of
rooms.
● Worldwide access to all building
technology by means of IC 1 KNX
internet controller.
● Fault messages displayed and
automatically forwarded to the
building‘s electrician
● Monitoring of windows, doors or
underground car parks using sensors.
● Avoidance of cost-intensive load
peaks via planned connection and
disconnection of electrical consumers.
KNX in the office!

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Beautiful on the outside;
intelligent on the inside
● Office buildings
● Private houses/apartments
● Schools and public buildings
● Commercial buildings
● Hotels
● Restaurants
● Laboratories/Industries
● Hospital and retirement homes
● Leisure Facilities / Sport arenas
● Churches
● Cinemas
● Museums and galleries
● ...

KNX is green
Energy Efficiency

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The demand for energy efficiency
●Today there is a high demand for more energy efficient buildings
●The directive 2002-91-EC states that all countries in Europe should have
some kind of energy labelling on their buildings
●The standard EN 15232 defines what kind of functions are mandatory to
achieve an energy efficient building
●KNX is an easy way to accomplish energy efficiency
Classification of functions Example of classification of
buildings (France)

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Energy savings with KNX
●Energy Efficiency
● Closely connected with the KNX building
system engineering is the comfort of
controlling:
●Shutters and blinds
●Lighting system
●Heating system and air-
conditioning
●Audio system and many more
●Furthermore this comfort brings energy
savings of up to 50% as new
researches documented
(Source: www.iia.hs-bremen.de/KNXEnergieeffizienz)

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SeeTool
●A tool to calculate potential savings in
buildings
●Verified and documented solutions
● Wiring diagrams, product info, user manual etc
●Shows the potential savings in a clear way

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What are the savings estimated in SeeTool?
● Energy Total savings compared total energy consumed
for lighting, heating & cooling
● Electricity savings compared energy consumption for
lighting
● Heating & Cooling savings compared energy consumption for
heating &/or cooling
● CO2 savings compared CO2 emissions,
dependent on defined generation
for energy production

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Benefits
bus system, standard, multi-trade
● Flexibility
Planning, Installation, Adaptation, Use, Multi-vendor
● Safety and security
Monitoring, Alarm, Fire load, Technology
● Comfort
Easiness, Automatic, Scenes, Design
● Cost efficiency
Energy efficiency, Adaptations, Maintenance, Multi-vendor

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Flexibility
● Highly flexible and time-efficient
electrical installation and planning due
to modular system
● Integration into building management
systems
● Simple and economic adaptation of the
building functions to changing
requirements.
● System can be extended in stages and
is use-oriented, making it possible to
tailor solutions in modular fashion
Advantages with KNX

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Safety and Security
● Worldwide KNX Standard integrates
different services, applications and
manufacturers.
● KNX – “all round protection” of the
house and its inhabitants – increased
protection from break-ins, fire, etc.
● Reduced fire load due to reduction of
the number of live power lines
● Less electromagnetic fields
Advantages with KNX

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Comfort
● Innovative control interfaces with
superb design features, ideal for
integration in modern architectural
styles
● Building functions can be controlled
and monitored simply, effortlessly and
comfortably
● Electrical installation is simple,
effortless and comfortable to control
and operate.
● Simple handling via easy-to-use
projection, start-up and diagnostics
tools
Advantages with KNX

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Cost efficiency
● Short installation times thanks to clear
wiring and cable routing.
● Cost savings thanks to intelligent KNX
energy management and minimal outlay
for adaptation to changing requirements.
● Short rebuilding and construction times
gives the building a higher flexibility and
it can faster come into use / re-use;
● higher income from rent
● higher profitability
● higher yield
● higher second-hand value
Advantages with KNX

KNX history and
the KNX association

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KNX history
●1987 - The awareness that manufacturer specific and proprietary systems would
hinder a broad market penetration guided the leading manufacturers in electrical
installation techniques to the constitution of the INSTABUS-research and
development organization.
● (Founding members: Merten, Berker, Gira, Jung and Siemens)
●1990 - Constitution of the EIBA (European Installation Bus Association) based in
Brussels to define technical guidelines, certification and awarding of the EIB
trademark, preparing of European and international standards (DIN VDE
0829 and EN 50090) and coordination of the EIBA-member activities.
●1999 - Members of the following associations have founded the
KNX Association:
● BatiBUS Club International (BCI)
● European Installation Bus Association (EIBA)
● European Home Systems Association (EHSA)

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KNX history
●Today => KNX-offer consists of more than 6000 product groups with a
multiple on KNX-certified products from more than 175 registered
manufacturers.
●Nowadays KNX is the first open world-standard for home and building
automation meeting European and International standards.
● Europe: CENELEC EN50090 + CEN EN 13321
● International: ISO/IEC 14543 + GB/Z 20965 Chinese Standard
+ ANSI/ASHRAE 135 US Standard

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Goals of the KNX association
●Definition of testing and quality standards via working and expert groups (KNX
specification)
●Technical hotline for manufacturers developing KNX compatible devices
●Issue of KNX trademark on the basis of specifications through KNC Certification
●National and international Standardization activities
●Promotion of training measures by certification of training centers
●Promotional activities (web site, trade fairs, brochure etc)
●Encouraging forming of national KNX groups
●Scientific partnership for technical institutes
●Rest specifications work/promotion/certification of legacy systems

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Cost of installation
A look at the costs
Costs of
KNX -
Installation
Costs of
today`s
Installation
Functionality
20.000
10.000
5.000
2.000
15.000
25.000
30.000
low middle high
€

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Installation savings on LSC
Savings potential
Time
Concept, idea,
financing
Planning
Construction
phase
Phase of utilization
Costs of
conventional
installation
Costs of
KNX -
installation
Operating costs: 75%
Investment costs: 25%
Savings

KNX Trainings
KNX Certification
KNX Product and Solution trainings

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KNX ETS3 certification training
● Location: Merten in Wiehl, Germany
● Dates: see training catalogue
● Duration:
● Monday 9:00 to
Friday 15:00
● Prerequisite knowledge
● Good English knowledge is mandatory
● Max. number of participants: 10
● Up to 2 persons on each training set
● Trainer: Trond Høyem,
● Registration: Christine Grabolle
christine.grabolle@de.schneider-electric.com
with copy to
trond.hoyem@no.schneider-electric.com

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KNX ETS3 certification training
●Objectives
● To get the KNX Certification.
● This label means you have acquired the level to be able to build applications and
projects.
●Content
● KNX Certification applications.
● KNX Certification possibilities.
● Hardware design.
● Software programming: ETS3.
●This course should be completed by
● KNX product and solution Basic and
● KNX product and solution Supplementary.

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KNX Product and Solution Training - Basic
● Duration:
● Monday 12:30 (incl. lunch) to
Friday 15:00
● KNX Certification (ETS knowledge) is
mandatory
● Trainer: Tomas Nordström,
with copy to
tomas.nordstrom@se.schneider-electric.com

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KNX Product and Solution Training - Basic
Get to know the “Schneider KNX solution building stones”
● Mix between theoretical presentations and practical
exercises with original devices (approx 40% / 60%)
● All major disciplines are covered
● Switch, dimming, blind and temperature control, automatic
and manual control, central functions and scenes
● The participants will…
● learn the scope of Schneider KNX product range
● learn the main functions/features of each product
● learn the easiness of saving energy with KNX
● learn how to configure products with ETS to create
solutions according to customer demands
(function description)
● learn how to test, analyse and correct solutions
on live training panels using ETS

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KNX Product and Solution Training - Supplement.
● Duration:
● Tuesday 09:00 to
Thursday 15:00
mandatory
● Trainer:
● Tomas Nordström, Joachim Dröscher
with copy to
tomas.nordstrom@se.schneider-electric.com

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KNX Product and Solution Training - Supplement.
● Mix between theoretical presentations and practical
exercises with original devices (approx 40% / 60%)
● Focus
● Deeper knowledge of special KNX products
● Advanced solutions for lighting, blind and temperature control and monitoring
● The participants will…
● learn how to use special features of the KNX products
● learn the easiness of saving energy with KNX
● learn how to configure products with ETS to create
solutions according to customer demands
(function description)

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KNX Certified tutor training
● Dates: to be decided
● Duration:
● 5 days
mandatory
● KNX product training
● Trainer:
● Trond Høyem
with copy to
trond.hoyem@no.schneider-electric.com

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KNX Certified tutor training
● Will be offered from Q3 2010 (certification of training centre needed)
● Strictly for Schneider employees
● Participants that passes the exam will be certified tutors and will be allowed
to do KNX ETS3 certification training.
● Need to score at least 60% on the exam to become a tutor
● The training is only theoretical

KNX_Introduction.pdf

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