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LED DRIVERS WITH BLUETOOTH INTERFACE
Highly advanced miniaturisation of wireless communication modules combined with a drop in their price is the reason why radio transmission modules can be found almost everywhere. Despite this, incorporating such a module into the LED power supply is a very innovative solution and makes it incredibly easy to create lighting systems.

By introducing a popular data transmission standard, such as Bluetooth, you can create functional, unique, easy to manage and control lighting systems for buildings, halls, rooms, etc.

The Bluetooth interface is a well-known feature of headsets. Another popular application of this standard is the emulation of the UART virtual serial port, which enables data transfer between devices, usually between a PC and a smartphone. By their nature, these were point-to-point connections, which made it impossible to control extensive networks of devices.

One of the major trends in the field of wireless communication devices are IoT networks, Industry 4.0 and smart buildings. These trends have also been recognised by the consortium that oversees Bluetooth development and the companies cooperating with it, so it is not surprising that the successive versions are increasingly focused not so much on audio devices as on energy-saving solutions powered by batteries or renewable energy sources employed in such systems.

Bluetooth and grid networks

As mentioned before, the Bluetooth interface was mainly focused on point-to-point connections. Although there was a profile to create local PAN (Personal Area Network) networks, it was very rarely used, as these were networks with rather low transmission speeds and limited capabilities.

Bluetooth version 4.0 opens up the possibility of creating grid networks. Their main advantage is their virtually unlimited range, as data can be transferred from the base device to the network node and then from node to node. A node in such a network is any device which, apart from data transfer, may also have some other functionality. It can, for example, have an additional function of a display, switch, sensor etc. *Grid networks are particularly suitable for communication within a smart building, as they offer almost unlimited coverage. Data can be transferred e.g. between floors or rooms without complex wiring. Another great advantage of grid networks is the ease of modification. What is important is that the Bluetooth communication protocol has always been well secured – it ensures device authentication and data encryption, which makes hacking into the network highly difficult.

Drivers with wireless communication

The engineers from MEAN WELL, a well-known manufacturer of power supply equipment, came up with a brilliant idea that responds ideally to the market trends. They decided to equip a LED driver with a Low Energy 4.0 Bluetooth programmable communication module. This opens up the way to control lighting with the use of popular devices such as smartphones, tablets, personal computers and microcomputers, for instance Raspberry Pi. The integration of the radio module directly into the driver has greatly simplified the lighting control system – control takes place in the driver itself, i.e. exactly where it is needed, with no additional intermediary devices required.

The new drivers by MEAN WELL were designed in cooperation with European company Casambi, which was established to develop and improve Bluetooth grid network solutions. Casambi's communication modules have been integrated in drivers from the LCM-25/40/60BLE series. The listed series of drivers offer the possibility to set the output current within the available power range (the number in the driver's name indicates the maximum load power), thanks to which variously connected LEDs can be easily powered using the same driver after the output current is set using the DIP switches. The available load current and voltage combinations are conveniently labelled on enclosures of the respective models (fig.1).

Fig.1. LCM-25BLE series driver.

  • Powering various configurations of LEDs. Output current/voltage modified using a DIP switch.
  • Plastic housing, class II design.
  • Built-in active PFC function.
  • Energy efficiency up to 90%.
  • Lighting dimmed by means of Bluetooth and a button.
  • Protection against short-circuit, overvoltage and overheating.
  • Surge immunity up to 2 kV (L-N).
  • MTBF > 50,000 hours.

The fact that the parameters of the output voltage and current can be changed is a great convenience for the system contractor and service technician. The former can reduce the number of various devices in the lighting system and in the warehouse, while the latter can enjoy significantly easier work because replacing a damaged power supply module with a new one or changing the configuration of powered LEDs only involves setting the load current without the need to use multiple modules for different connection variants. It is also important that both models can be successfully used for indoor as well as outdoor lighting systems.

Lighting control options

Casambi has developed a special application to control the LED driver. It allows you to group power supplies, set scenes, timers, correlations, etc. The drivers can also be operated using devices that are compatible with the communication protocol developed by Casambi, such as wall switches or light sensors, which can be used to extend the range of the network and to develop customised, smart lighting systems. This gives you the opportunity to create advanced lighting control algorithms to achieve a specific aesthetic effect or far-reaching energy savings.

In addition to the possibility of managing lighting using the application, the drivers also feature a freely programmable input connected to the neutral power supply cable by means of a pushbutton (Fig. 2). This input can be programmed in such a way that it controls not only the directly connected driver, but also a group or all of the drivers, allowing for switching on/off the lighting, a single luminaire, a group of luminaires, as well as a scene change.

Fig. 2. Connecting a programmable pushbutton

The variant of Low Energy 4.0 Bluetooth grid network developed by Casambi works in the self-organisation mode, which does not impose on the user or installer the need for complex configuration. In this mode, the network coverage (range) is maximised with the help of the devices operating in the network, and there is no need for additional gates or bridges. The Casambi application for controlling the operation of the drivers, and thus the light sources being supplied, can be connected to the cloud for data storage and status reporting.

Disover LED drivers with Bluetooth interface by MEAN WELL

Final remarks

When installing lighting systems for smart buildings, it is worth considering products by MEAN WELL. They not only enjoy a good reputation but are also practical and offer wide possibilities of configuration and application. Among MEAN WELL products you will find not only the described drivers from the LCM series, but also LED controllers without adjustable current or voltage, but with PWM output, which allows you to regulate colour temperature and light intensity. An example of such a solution is the PWM-120BLE model with 120W and output voltage (depending on model) from 12 to 24V. Wide range of input voltage (90...305V AC) allows the controller to be used in almost any lighting system. The PWM-120BLE has a built-in Casambi BLE 4.0 module, which enables remote communication and control of the lighting.

It is worth mentioning that among products by MEAN WELL you can also find LED controllers without wireless interface.

Discover the full offer of LED drivers by LED MEAN WELL

 

www.tme.eu
2021020401 / 04.02.2021 / Various / Transfer Multisort Elektronik Sp. z o.o. /

GAMING, COMPUTER ACCESSORIES AND OTHER RELATED PRODUCTS
Long gone are the days when gamers had to make do with a worn, dusty PC, whose case was held together by four different screws and a piece of string. Nowadays, computer fiends go for high-performance hardware and flashy computer stations.

POWER SUPPLY BY PANASONIC ‒ AN OVERVIEW OF THE OFFERED SOLUTIONS
In the modern world, basic electronic components, such as resistors, capacitors, and inductors are often overshadowed by the universally applied microprocessors. However, it is these seemingly insignificant components that form the foundation without which no advanced electronic system could exist. Thanks to them, the basic tasks and functions of electronic circuits can be carried out.

HELUKABEL THERMOCOUPLE COMPENSATING CABLES
The TME offer now includes thermocouple compensating cables by HELUKABEL, a highly renowned manufacturer. The company supplies a variety of products designed for making professional connections in accordance with industrial quality and durability standards – from power supply to modern digital communication solutions.

INDUSTRIAL, SIGNAL, AND OTHER TYPES OF CABLES
The use of the right cables determines the quality of the end result in every application: from making connections for power tools to complex installations in the field of industrial automation. TKD is committed to providing solutions that are tailored to the specific requirements in a wide variety of fields...

INDUSTRIAL ICT CABLES BY HELUKABEL
HELUKABEL is a well-recognized supplier of high quality cables for diverse applications. The core part of this manufacturer’s range of products are cables for professional and industrial use. In the TME catalogue, you will find a wide choice of HELUKABEL products, including the most popular transmission standards used in automation systems, as well as industrial IT network cabling.

WAVESURFER 3000Z SERIES OSCILLOSCOPES BY TELEDYNE LECROY
The WaveSurfer 3000Z series oscilloscopes by Teledyne Lecroy are 4-channel devices designed to troubleshoot and analyse electronic circuits – both at the prototyping and servicing stage. Here, advanced functionalities meet simplicity of use thanks to the MAUI touch screen.

COMPONENTS FOR EV CHARGING STATIONS BY PANASONIC
Charging stations are the main element of the infrastructure developed for electric vehicles. Such devices are subject to strict standardisation, and many manufacturers of electronic engineering solutions are involved in producing them. They are supported in this task by prestigious suppliers of electronic elements, including Panasonic, who offer high-quality components and subassemblies for such applications.

WIRES FROM THE ECOGEN® SERIES BY ALPHA WIRE
For many years, one of the most troubling issues for the industry and automation was their impact on the high production of materials that are harmful to the environment. Until recently, any electrical system upgrade meant that some amount of hardly recyclable waste was going to be generated. However, it is the thing of the past.

NEW ZP SERIES OF UNIVERSAL ENCLOSURES BY KRADEX
KRADEX is a Polish manufacturer of plastic enclosures, which started its operations in 1985. Since the beginning, the company has put much emphasis on the development of production processes, selection of materials, as well as ongoing modernisation of its technical facilities.

MINIATURE STEP-UP/STEP-DOWN CONVERTERS FROM POLOLU
The TME catalogue now includes miniature DC-DC converters with constant output voltage (available in versions from 3.3 V to 15 V DC) from the portfolio of an American brand named Pololu.

FEATURES AND CAPABILITIES OF THE SPE SERIES POWER SUPPLIES BY OWON
Choosing the right laboratory power supply may be a challenging task, especially if you want the PSU to be compact, have a wide range of features and, at the same time, be affordable. If this is something you can relate to, you should take a look at OWON’s offer.

BANANA PI SINGLE-BOARD COMPUTERS
Single-board computers greatly facilitate the development of complex projects. They provide an attractive platform not only for school pupils, students or amateurs, but also for professionals. In the difficult times of supply shortages, we recommend to our customers one of the most popular solutions in its field, i.e. Banana Pi computers.

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Calendary
SENSOR+TEST 2024, 11.-13.6.2024, Nuremberg, DE
electronica 2024, 12.11.-15.11.2024, Munich, DE
DistribuTECH, 11.2.-13.2.2025, Dallas, TX

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