Dali lighting system and advantage introduction

DALI DigitalAddressahle Lighting Interface has been dimmed. Since its application of fluorescent light lighting, it has developed greatly. At present, there are many cases of applying DALI systems in LED lighting in Europe and the United States, and in China, there are very few research on DALI lighting.

The DALI lighting system provides a good solution for future large -scale lighting projects.

So what is Dali?

Dali is the abbreviation of "Digital Addressable LightingInterface Number Disabled Lighting Interface". It is a data transmission protocol. Dali defines the digital communication method between lighting appliances and system equipment controllers. DALI is not a new bus. But support open systems. The original goal of designing DALI is to optimize a smart light control system. This system has simple structure, convenient installation, easy operation, and good function. ) Docking. DALI systems are different from BMS, EIB or LON bus systems, not to extend it into a system with various complex control functions, but just as a lighting subsystem application. It is integrated in BMS through the gateway interface. The BMS control command can be accepted. , Or recover the operating status parameters of the subsystem.

The biggest feature of DALI technology is that a single lamp has an independent address, which can perform accurate dimming control of single lamps or lamp groups through the DALI system. DALI system software can independently address the same strong electric circuit or single or multiple lamps on different circuits, thereby achieving separate control and any grouping. Therefore, the DALI lighting system brings great flexibility to the lighting control. Users can design the corresponding lighting scheme according to their needs. This adjustment can be used during the operation after the installation. Make any changes. The DALI system is an ideal and simplified digital communication system designed to meet the needs of today's lighting and lighting technology.

What about DALI-2?

DALI-2 is an update of DALI, according to which, not only have 101 and 102 protocols been updated, but a 103 protocol is also additionally adopted. (Note: 103 protocol is a DALI control unit.) DALI-2 in fact is DALI-1 with some additional features that are relevant for sensors and control devices in the DALI network. On this basis, only 1 DALI address is required to realize color temperature or hue control by a single one power supply of multiplexed output.MOONS' dual drive is DALI-2 compatible. Each dual DALI drive has two (or four) DALI-2 DT6/8 LED outputs. With driver for Tunable White, one LED output controls the intensity of the overall light output, and the other controls the CT mix of the 2 LED outputs.

Dali application advantage

1. The design is simple and easy:

Dali digital control system is simple design. As long as the design is connected to each other through the digital signal interface, and it is connected to the 2 -core control line. All groups and scenarios can be programmed by computer software during installation and debugging, which not only saves wiring costs, but also only needs to change the software settings for design modification, re -layout and separation without re -wiring. It is very easy to run.

2. Simple installation economy:

There are 2 main electrical sources and 2 control lines to install the DALI interface. There are no special requirements for wires. There is no polarity during installation. As long as the main power line is separated from the control line, the control line does not need to be shielded. The online current is 250mA and the voltage drop does not exceed 2V when the line is 300 meters long. Control lines and power cables are parallel without buried wires. The design of compact control components does not require a special control cabinet, so it is easy to install and economical.

3. Precise and reliable control:

Dali is a digital signal. Unlike analog signals, the signal of 1010 can achieve non -disturbing control, and the control signal distorted will not be caused by long -distance voltage drop. Therefore Directly. The DALI signal is a two -way transmission. Not only can the front transmission control command, but also the state, fault information, switch, and actual brightness value of the ballast and lamp can be returned to the system.

4. The communication structure is simple and reliable:

The DALI interface communication protocol consists of 19bit digits, the first bit is the starting bit, the 2nd to 9th bit is the address bit, the 10th to the 17th bit is the data, and the 18th and 19th bits are stopped. Using a unique Manchester code to avoid error codes. The transmission rate of 1200 Potter can ensure that the communication between the device is not disturbed, and the high level on the control line is 16V. Each controller on the control line is used as a master function in the communication, and the control electrical appliances like a ballast on the control line just respond to the command of the command of the Master, and the system has distributed intelligent functions.

5. Wide application scope:

Today, the DALI interface is not limited to the lighting of the fluorescent lights, various halogen tungsten lamp electronics transformers, gas discharge lamp electronics ballasts, LED also uses Dali interface lighting; the control device also includes: radio receiver also includes: radio receiver , Relay switch input interface. Various keys control panels, including LED display panels, already have DALI interfaces, which will make DALI applications wider and wider. The controller expands from the smallest office to the office building of multiple rooms, from a single store to the star to the star Class hotel.