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Customer application 28 August 2020

BMW Production Hall: New Lighting Standard Replaces Old Lighting

WAGO’s newly developed lighting concept reduces the power consumed by lights within BMW’s production facilities by more than a quarter.

For decades, BMW has been a household name among car and motorcycle enthusiasts alike, and now the same holds true for building and automation engineering experts. The former associate the brand with innovative motors and vehicles, while the latter is impressed by the new lighting control system, which lowers the energy costs of this established Munich-based company by around 30 percent. BMW is gradually expanding this lighting solution, which is based on WAGO components, to make it a company-wide standard as part of its sustainability strategy.

Environmentally responsible action is only really effective when both sides of the coin are taken into account: the product itself, and its entire development process. BMW gives very high priority to ecological and social issues; the company has been a permanent member of the “Dow Jones Sustainability Group Index” since 1999. And to ensure that it will also remain on the stock index for companies exercising sustainable business practices in the future, the Munich-based company is continuously working on programs for active energy optimization.

BMW Production Facilities

Building Lighting under Scrutiny
A User-Friendly and Area-Oriented Concept
Automated and Integrated Workflows

Building Lighting under Scrutiny

One such measure also carefully scrutinizes the existing lighting technology in the production facilities, even though substantial optimization had already been achieved in this sector using a new central control system. This included, among other improvements, switching off the main lighting in the production facilities during idle times. Furthermore, BMW was already taking advantage of the possibility of switching off individual phases in the three-phase current bars as needed. However, without additional technical changes to the installed current bars with traditional control gears, the savings potential was soon exhausted.

A quick glance at the lighting plan from that time demonstrated to management how far from ideal the system was – all lights had indeed been planned based on the reduction in luminosity that occurs as lights age, but, because the expenses for frequent manual adjustment would have been too high, and the technology necessary for automatic adjustment had not yet been developed, the lights were installed from the beginning with significantly over-designed luminosity. This was the only means of ensuring that the lighting intensity required by the pertinent standards would still be achieved at the predefined time for maintenance. This concept inevitably resulted in inefficient lighting, as energy consumption was unnecessarily high.

A User-Friendly and Area-Oriented Concept

The next logical step, after upgrading the central control system, was to modernize the hardware at the automation level. In fact, this required a solution that could both be installed in newly constructed production facilities that are equipped in the field with DALI and EnOcean, and also retrofitted to projects that retained the existing conventional technology. The fact that the two technologies – both old and new – could be easily combined was one reason that Jörg Tratzl, the electrical systems designer in charge, ultimately decided on components from WAGO. Another reason: the exceptionally user-friendling handling that WAGO developed for BMW for control of operating devices for lighting technology.