Advanced DALI Interface Also Supports Predictive Maintenance of Systems Using OPTOTRONIC LED Drivers
OSRAM has introduced OPTOTRONIC LED drivers which include an NFC transceiver to accelerate luminaire manufacturing and commissioning, and to provide a simple wireless interface for maintenance technicians to download operating data.
The drivers‘ NFC interface enables luminaire manufacturers to eliminate the common practice of setting the output current with resistors. This practice is outdated, as the assembly of resistors on to a luminaire’s PCB requires manual labor, and resistors are more expensive, less accurate and less flexible than software programming. Users are increasingly demanding customized settings in modern LED luminaires, and software programming also provides more features to enable manufacturers to meet their requirements.
Standard NFC readers support a quick, wireless process for configuring drivers in the factory, without needing a connection to mains power: the connection is made simply by placing the LED driver on top of the NFC interface. In most cases, it is possible to read out the driver’s configuration even after it has failed.
The new OTi DALI NFC LED drivers not only support advanced manufacturing operations, they also enable luminaire users to prepare their lighting installations for the IoT, thanks to their provision of luminaire information and monitoring data based on a standard DALI interface which conforms to the latest DiiA specifications, parts 251, 252 and 253.
Data for Smart Lighting Systems
When integrated into a suitable lighting management system, the OTi DALI NFC LED drivers can supply valuable luminaire data via the DALI interface, including operational data such as lumen output, CRI and color temperature. In addition, energy consumption data provided by the LED drivers can serve as a basis for optimizing energy efficiency.
Luminaire- and driver-related data, such as operating hours and switching cycles, also provide valuable inputs for maintenance and diagnostic functions. In production, the luminaire manufacturer can store data such as model, power and service life in the LED driver; a lighting management system can retrieve these data once the luminaire is installed.
Whenever a luminaire fails, all the relevant data can be read out, so that a replacement luminaire with the correct configuration can be ordered immediately and quickly installed. Diagnostic data also support building operators‘ preventive maintenance programs.
OSRAM’s NFC LED drivers offer additional operation and status information beyond the data sets specified in the DALI standard, such as energy consumption, power and operating time. By using these data, it is possible to perform predictive maintenance for more reliable lighting operation.
These data can also be presented graphically in OSRAM’s Tuner4TRONIC software.
In-Field Reprogramming
To speed up the installation and maintenance of LED luminaires on the field, smartphones with integrated NFC antennas can be used to program selected OSRAM indoor compact NFC LED drivers. Typical examples could be the adjustment of light output or changing the dimming times or levels. Using the copy and paste functionality of the Tuner4TRONICField app, the settings of one luminaire can be transferred to a new one in a matter of seconds.
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