KNX bus 2*2*0.8 KNX/EIB-BUS control cable

KNX-2 * 2*0.8 bus communication cable

Foreword

Traditionally, the lighting control system is based on the lighting distribution box to control the on-off of the lighting fixtures through manual switches, or through the series of contactors in the loop to achieve remote control. The building automation (BA) system that appears today is based on electrical contacts to achieve regional control, timing on-off, central monitoring and other functions. Because the lighting control system is not independent in the BA system, and the control function is simple, it has certain limitations in use. Therefore, when the BA system fails, the lighting system is also affected. With the development of microelectronics technology and digital technology, a higher level of intelligent professional lighting control system has been developed, which can save energy, extend the life of lamps and improve the quality of lighting. According to the experience of the use of units, not only in the lighting management and equipment maintenance of simple and reduce costs, but also to improve the environment, improve work efficiency has a significant effect.

Structure and composition of the system

According to the topology of the network, the intelligent lighting control system has the following two types, bus type and star structure. They have their own characteristics, the former is more flexible, easy to expand, relatively independent control, low cost. The latter has high reliability, simple fault diagnosis and troubleshooting, simple access protocol and high transmission speed.

The general intelligent lighting control system is a digital lighting management system, which consists of three parts: system unit, input unit and output unit. Each unit except the power supply device is set to a unit address and its function is set with software. Each load circuit is controlled by the output unit, and the various forms of the unit are briefly described as follows:

1. System unit: used to provide working power supply, source system clock and various system interfaces, including system power supply, various interfaces (PC, Ethernet, telephone, etc.), and network bridge. The main system implements the same control and signal sampling network for each area; the subsystem implements different specific control networks for each partition. The main system and the subsystem are connected by elements such as information to realize data.
Transmission.
 

2, input unit: used to convert external control signals into signals transmitted on the network; such as programmable multi-function (on/off, dimming, timing, soft start/soft off, etc.) input switch, infrared receiving switch and infrared remote control (to achieve light dimming or on/off function). Various types and multi-function control panels (if some provide LCD page display and control modes, and use graphics, text and pictures as soft keys, multi-point control, timing control, storage of various bright modes, etc.), various function sensors (such as infrared sensors can sense human activities to control switches of lamps or other loads, brightness sensors), through the detection of the brightness of the surrounding environment, adjust the brightness of the light source, so that the surrounding environment to maintain a suitable illumination, in order to achieve the effective use of natural light to save energy.

3. Output unit: The output unit of the intelligent control system is used to receive signals transmitted from the network and control the output of the corresponding loop to achieve real-time control. The output unit has various types of relays. Dimmer (with load current as the adjustment object, in addition to dimming function, it can also be used as soft start and soft shutdown of lamps) analog output unit, lighting lamp dimming interface, infrared output module, etc.

The system generally adopts the mode of centralized control and management and decentralized execution, that is, the central monitoring center and intelligent control lighting cabinet are configured. The former has control computer, main communication controller and other equipment, which are used to control and manage the whole system. The control command is communicated with the programmable controller of each intelligent control cabinet through the network, at the same time, it receives the automatic and manual working status, lamp on/off status, etc. from the programmable controller in the intelligent control cabinet, and takes measures under abnormal conditions.

Function of the system

At present, the intelligent control system has the following functions!

1. The intelligent system is equipped with a central monitoring device to implement central monitoring of the entire system so as to adjust the on-site effect of lighting at any time. For example, the system sets the lighting scheme mode, and displays the lighting mode and on/off state of each lamp group on the computer screen according to the arrangement of lighting fixtures.

2. It has the function of abnormal start and automatic protection of lamps;

3. It has the statistical function of lamp start time, cumulative record, and lamp service life;

4. In the case of power supply failure, it has the function of automatically switching the dual-channel power receiving cabinet and starting the emergency lighting unit;

5. The system is equipped with an automatic/manual transfer switch to manually operate the on and off of each lamp group when necessary.

6. The system is equipped with interfaces connected to other systems, such as building automation system (BA system) to improve the comprehensive management level

7. It has the functions of scene preset, brightness adjustment, timing, timing control, soft start and soft shutdown. With the further development and improvement of the intelligent system, its function will be further enhanced.

Use effect

The total effect of intelligent lighting control system is as follows!

1, to achieve the humanization of lighting;

Because different areas have different requirements for lighting quality, it is required to adjust and control the illumination to realize various control schemes such as scene control, timing control, multi-point control, etc. The flexible performance of scheme modification and change further ensures the lighting quality.

2, improve the management level

The traditional switch control lighting on-off, into intelligent management, so that high-quality management awareness for the system to ensure the quality of lighting.

3, save energy

The intelligent sensor is used to sense the outdoor brightness to automatically adjust the light, so as to maintain a constant indoor illumination, which can not only make the indoor lighting environment, but also achieve the effect of energy saving. According to the working conditions of each area, the illumination is set, and the lighting is automatically turned on and off on time, so that the system can save energy to a large extent.

4, extend the service life of lamps

As we all know, the service life of lighting fixtures depends on the grid voltage, because the higher the grid overvoltage, the life of the lamp will be reduced exponentially, on the contrary, the life of the lamp will be extended exponentially, so preventing overvoltage and reducing the working voltage is an effective way to extend the life of the lamp. The system is equipped with devices to suppress grid impulse voltage and surge voltage, and artificially limit the voltage to improve lamp life. Adopt soft start and soft shutdown technology to avoid the thermal shock of the lamp filament, in order to further extend the life of the lamp.

Design Example of Intelligent Lighting Control System

This paper briefly introduces the application of intelligent lighting control system in the control of stadium lighting. Through the intelligent control of various lighting fixtures in the stadium according to different requirements, it can adapt to the different needs of different environments and achieve different lighting effects.

6. The cable KNX bus is specially designed for the control and management of building central management systems such as air conditioning, heating, ventilation, timing, energy systems, door locks, etc. The cable is mainly composed of two parts: sensing (transmitting signal) and feedback (receiving signal). The bus cable can be installed and laid in dry and wet spaces, wiring ducts or ducts. Based on shielded installation cable, according to DIN VDE 0815, 0.8mm solid core bare copper wire conductor, cable size 2X2X0.8mm. Four solid conductors are twisted into a star twisted group, and the colors of the core wires are wire pair 1, red/black and wire pair 2, and white/yellow. Covered with aluminum plastic film shield, the cable is tested in the water tank at 4kV high voltage (1 minute). The outer sheath is PVC green, and there are halogen-free types available for purchase.

EIB-BUS /J-Y(ST)Yh, EIB-BUS /-H(ST)Hh 2*2*0.8 Cable KNX Bus Description

Specifications: 2X2X0.8mm

Conductor: Single strand bare copper, 0.8mm

Core wire insulation: new material PVC

Core color: red, black, white, yellow, star-shaped four-wire twisted, plastic waterproof belt

Aluminum foil mark pull tape (ALPET) shield tape separate drain wire (ground wire)

Sheath: new PVC, green (regular), other colors can be provided according to customer requirements

EIB-BUS /J-Y(ST)Yh,EIB-BUS /J-H(ST)Hh 2*2*0.8 KNX bus System

Our factory can customize different types of cables according to customer needs.