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The E ljo I nstallationb us consists of a two-wire bus cable

and connected bus-adapted installation units, such as

sensors, electrical units, and system components. E ljo

Installationbus units are certified by E IB A according to

European Installation Bus (EIB) standards.

Sensors convert information and send it out on the

bus cable in the form of data telegrams . Sensors could

include rocker switches and binary inlets for the

connection of potential free contacts.

The electrical units receive dat a t elegrams and convert

these to connection a nd dimmer signals. Examples of

electrical units are breakers, dimmers, and a nalogue

outlets.

System-units and components are needed to operate

the system. These are primarily current supply forgenerat ing bus volta ge, connectors for bus sections, and

interfa ces for connecting progra mme-units.

The bus two-wire cable carries both informat ion and

electricity for the bus units electronics. The bus cable is

connected to ea ch bus-unit.

System information

Task-specific sensors and units are selected and consist

of bus connectors and application mod ules with

corresponding application programs.

The application progra ms are part o f E ljos product

data base and are loaded with projection andoperational start-up software ETS from the serial

interface in a P C d own via the bus and into the

participants. Eljos product dat aba se can be obtained

free of charge on request.

The E ljo I nstallationb us is a decentra lised bus system.

E ach unit ha s its own micro-contro ls. The units can

communicate directly via the bus, without a centra l unit.

All units are eq ual bus participants (multi-master

operation).

The CSMA/CA method is used to avo id telegram

collisions and data destruction.

The E ljo I nstallationb us runs on low tension voltage

SE LV. The bus volta ge is D C 24V (+ 6/-4V). P art icipants

using under 20V are disconnected

from the bus. D ata transfer takes

place a t a speed o f 9.6 kbit/s.

Area line

Main line

Area 12

3

56

78

4

9

1011

1213

1415

CS AC 1

LK 1

Line 1 Line 15

LC 15

CS

P 1

P 63

P 1

P 63AC . Area coupler

LC : Line couplerP: Participants

CF: Current supply

Current supply

CS

Wind meterM ovementdetector

L ightsensor

Rockerswitch

L ightingM otors

Curtains/

blinds

H eat/climate/

ventilation

Bus cable

230/400V

ELJO

INSTALLATIONSBUS

Eljo Installationbus-EIB

TopologyThe E ljo I nstallationb us is divided into sections with a

hierarchical structure. The smallest unit is the line.

A line conta ins a maximum of 64 bus participants (D )

and a current supply with o utlet. (SF). Through line

couplers (LC), which are connected together via a main

line, up to 15 lines can be connected. These form an

area . In larger installations, up to 15 area s be

connected via a n area couplers (AC ). The main lines

and area lines require their own power supply with

outlet.

More tha n 14,400 bus participants can be connected

to the Eljo Installationbus if all lines and areas are put

into use.

-

+

B ackbone Line

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ELJO

INSTALLATIONSBUS

Connection of units

Busskopplarenhet

A pplikationsmodul

El jo I nstallation bus - EI B i n Tr end design El jo I nstallation bus - EI B i n D ecora design

The bus installation units consist of:

1. B us connectors

2. Application modules3. Application programs

Info rmat ion which is to be processed reaches the bus

connector via the b us. This sends and receives da ta ,

ensures the supply of power to the electronics, and

stores important data, e.g. its own physical address.

The bus connector a lso stores the a pplicat ion progra m

with its ow n para meters and group a ddresses.

The application module and application progra m

define the bus participants function. The application

program and application module must be tuned to each

other. The functioning of a unit is guara nteed only oncondition that the bus connector, application module,

and application program originate from E ljo.

Units in Trend designThese units are supplied complete and consist of inset

(application module and bus connector integrated into

a unit), supporting fra me, 1-compartment Trend fra me,

and bus connection clamps (exception: room

thermostat PI flush where t he application module andflush mounted bus connector are ordered separately).

The supporting fra me is screwed onto a mounting box

or surface box and the inset a nd Trend frame a re then

snapped onto the supporting frame.

Units in Decora design

The application mod ule and bus connector a re of stick-

in design. The a pplication module, flush bus connector,

and D ecora frame a re ordered separately. The bus

connector is fitted into the mount ing box or surface

box and the application module and D ecora frame are

then pressed on over the bus connector.

Units in flush (not design products), surfaceand built-in designs

The units have integra ted d esign with bus connector

and application mo dule in a single casing. The bus

connection is supplied w ith bus connecting clamp.

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ELJO

INSTALLATIONSBUS

P 1

P 2

P 22

P 23

P 24

P 42

P 43

P 44

P 62

350 m

300 m

350 m

Current supply

Summary ofsystem data

AddressingFor E IB addressing, a distinction is made betw een the

physical a ddress and the group add ress. The physicaladdressis the eq uivalent of the bus participants nameand is given as Area . Line. Pa rticipant (e.g. 5.4.23).

The group addressestablishes the identity o f the buspart icipant s. With the exception o f servicing and

progra mming measures, a part icipant is alwa ys called

up via it s group a ddress/es. The group address isdivided into up to 15 main groups, each with a maxi-

mum of 2048 sub-groups. This is denot ed b y the

structure Ma in group/Sub-group (e.g. 1/127).

Wiring specifications:The following types of w iring can be used as bus

wiring:

Type Construction Placing

YCYM2 x 2 x 0,8

J-Y (St)Y 2 x 2 x 0,8

in EI B -design*

EI B A guideline

(Base: D IN VDE

0207 and 0815)

Wire red (+ EIB )

black (-EIB )

yellow (reserve)

white(reserve)

D IN VD E 0815

(Ba se: D IN VD E 0915)

Wire red (+EIB)black (-EIB )

yellow (reserve)

white(reserve)

Fixed installation:In dry, damp, and

wet spaces, surface,

flush, and in pipes.

Outdo ors, if

protected from

direct sunlight.

Fixed installationIn dry and damp

operationa l spaces,

surface, flush, and in

pipes.

Outdo ors, flush.

Wiring lengthWhen installing bus wiring, the fo llowing values must be

observed:

Max wiring length between voltage supply and bus

participants: 350m

Max wiring length between tw o bus part icipant s: 700m

Tota l length of wiring in one line: 1000m

* The D IN VD E 0829 sta nda rd specifies 4 kV a s the

value for test-voltage for a further test between wiring

and external surface areas a ccording to D IN VD E 0472

part 508. It can be expected that this value will be

changed to 2.5 kV within the framewo rk for E uropean

harmonisation.

If the bus wirings second, yellow -white (reserve)

wire pa ir is used, the f ollowing points should be

noted:

Only SEL V low voltage is permitted.

Max. permitted permanent current 2.5A(short-circuit and overload protection required).

Speech transference is permitted, but not as

telephone wire in public telephone netw ork.

There must be no erroneous exchanging in the wiring

used.

Transfer medium: Twisted pair cable

Functions: Connection, control, regulating,

display, measuring, indicato r,monitoring

No. of participants 64

in one line:

No . o f lines per a rea : ma x. 15 + 1 ma in line

Number of areas: max. 15

B us wiring: Standard telecommunication

circuit , J -Y (ST) 2x2x0.8, and/or

MSR-wiring, YCYM 2x2x0.8.

One w ire pair for signal transfer

and volta ge supply. One wire

pair as reserve

Length o f w ire per line: max. 1000 m

D ista nce pa rticipa nt- ma x. 350 m

voltage supply:

Wiring structure: L ine, sta r or tree structure, or

combinations there of

A ddressing: Individual units or functions

B us ma na gement: Multi-ma ster opera tion, i.e. ea ch

participant is equal, no central

unit. D ecentralised accessibility,

CSMA /CA principle (collision

detection and resolution without

loss of telegram)

Tra nsf er techno lo gy : Seria l t elegra m tra nsf er,baseband, Twisted pair

technology, symmetric transfer

Transfer speed: 9.6 kbits/s

Feed voltage: D C 24V (+ 6/-4 V), short-circuit

protection, low voltage

protection (SE LV), 100 ms

buffered

Operating -5C to + 45C

temperature:

D isturba nce (E MV ) Sta nda rds a nd guidelines

according to IEC and VD E