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31 Cards in this Set

  • Front
  • Back

What does a KNX system require?

1. Power supply.



2. Sensors.



3. Actuators.



4. The BUS.

Power supply

Used for the power of the installation.

Sensors

(Push buttons, thermostats, air speed meters) generate commands as telegrams ( Send signal as telegrams)

Actuators

(Swith relays for lights, blinds) that receive the telegrams and perform a certain actions.

The bus

Connects all sensors and actuators.

KNX application

Lightning, blinds and shutters, security, energy managment, HVAC, monitoring, remote, metering, audio/video control, appliances.

What is the most common transmission medium in KNX ?

Twisted pair.

Backbone


Area


15 Line


4 Segment 3 Line repeater


Backbone 15 Area 15 Line4 Segment 3 Line repeaterEach segment 64 if there is Line repeater 63


15 Area 15 Line4 Segment 3 Line repeaterEach segment 64 if there is Line repeater 63


Each segment 64 if there is Line repeater 63


.

It is possible to connect up to 15 areas to a backbone. Singe areas are connected to the backbone line via a backbone coupler (BC).

.

Individual Address (Physical Address)

Each device connected to a certain topology needs to be uniquely identified by an address.

Individual Address (Physical Address)

It services to identify clearly the bus device and described its location within the topology.

What are the parts of Individual Address (Physical Address) ?

The first corresponds to the area number.


Where the middle part is the line number.


The final part is for the device number in the line.

.

.

What are the three structures(formats) to describe the group address?

1. Three-Level Structure


2. Two-Level Structure


3. Free Structure

.

.

Automation

A technology by which a process is performed with minimal human assistance.

Application of automation

1. Stabilization of ships, cars, air planes


2. Controlling machinery operation


3. Telephone network

Advantage of automation

1. Less cost


2. Less human assistance


3. High production and high efficiency


4. Less risks


5. Saving time


6. Accurate


7. Easy life

KNX

One type of automation systems, used to control many devices in order to do different tasks via sensors and actuators.

Bus

To exchange the sing b/w the sensors and actuator.

Protocol

When devices communicate with each other, there are set of rules and instructions that each device must follow.

Sensor

Send signal via bus.

Actuator

Receive the signal to do certain action.

Line coupler

Connect the line to the main bus.

KNX has a version called ETS , what is referred to ?

Engineering Tool Software

There 4 different types of versions available of ETS program. Mention.

1. Demo


2. Lite


3. Professional


4. Supplenantary version

Demo

Max. Three devices per project.

Lite

Max. 20 devices per project

Proffetional

No restrictions as regards number of devices.

Supplementary

It is intended as an additional license for the professional full version.

Protocol

When devices communicate with each other, there are a set of rules and instructions that each device must follow.