Because performance matters: Electronics by Liebherr.

Liebherr-Elektronik GmbHPeter-Dornier-Strasse 11, D-88131 Lindau☎ +49 (8382) 2730-0, Fax +49 (8382) 2730-4102www.liebherr.com, E-Mail: info.leg@liebherr.com

The Liebherr Group of Companies

Printed in Germany by Höhn GKW LEG 10348086-1-10.07

Wide product rangeThe Liebherr Group is one of the largest construction equipment manufacturers in the world. Liebherr’s high-value products and services enjoy a high reputation in many other fi elds, too. The wide range includes domes-tic appliances, aerospace and transportation systems, machine tools and maritime cranes.

Exceptional customer benefi tEvery product line provides a complete range of models in many different versions. With both its technical excel-lence and acknowledged quality, Liebherr-products offer a maximum of customer benefi ts in practical application.

State-of-the-art technologyTo provide consistent, top quality products, Liebherr attaches great importance to each product area, its com-ponents and core technologies. Important modules and components are developed and manufactured inhouse, for instance the entire drive and control technology for construction equipment.

Worldwide and independentHans Liebherr founded the Liebherr family company in 1949. Since that time, the enterprise has steadily grown to a Group of 100 companies with over 28,000 employees located on all continents. The corporate headquarters of the Group is Liebherr-International AG in Bulle, Switzerland. The Liebherr family is the sole owner of the company.

www.liebherr.com

2 3

Be it in construction machinery, the aviation industry, or traffi c engineering: Liebherr products stand for top quality and reliability all around the world. That is, not least, on account of the performance of their electronics. For this core competence, Liebherr relies on state-of-the-art technology developed internally. Liebherr-Elektronik GmbH in Lindau develops and manufac-tures high-grade electronic sub-assemblies and components. They are successfully used in the most diverse fi elds of application. Their development, production, and service are always oriented by project-specifi c and economic requirements. That is how Liebherr implements customised electronics solutions on the highest technological level and provides its customers a future-oriented partnership.

The electronics competence centre.

InnovationThe 140 members of the development team use their multi-faceted competence to implement innova tive and economic solutions in co operation with you. Tomor-

row’s technologies and applications are already devel-oped in our research department today.

ReliabilityThe components developed and manufac-tured by Liebherr-Elektronik GmbH meet the highest demands regarding functional safety and serviceable life, even under ex -

treme conditions. They are developed and made for heavy duties.

ResponsibilityWe see each project as an individual task. That is why Liebherr-Elek tronik GmbH accepts a far-reaching responsi-bility: for the products, their quality, and

their long-term availability.

Custom designLiebherr-Elektronik GmbH offers you custom-made solutions, perfectly tailored to your indi-vidual requirements and most diverse fi elds of application. For the sake of your success,

we pledge full commitment, from the development to the maturity phase and beyond.

12

34

Climate controller for the high-speed train ICE 3 Complete solution for large wheeled-loader appliancesPower electronics for the spoiler drive of the Airbus A380 with a maximum power of more than 10 kW 5

As individual as your requirements.

No matter how specifi c your wishes may be: we will fi nd a solution tailored to your task. The range of compe-tences of Liebherr-Elektronik GmbH enables top fl ex-ibility in the design, development, and manufacturing phases of electronic components.

Individuality is also one of Liebherr’s top priorities with regard to partnership. We escort and support your product, from the idea to serial production.

Our versatility – your advantage. Liebherr-Elektronik GmbH offers you a broad, inter-sector know-how basis. From this starting point, optimal results can be achieved for the most diverse requirements and application fi elds – func-tional, cost-optimised, and punctual. From individual components to complete systems, we implement solutions that are tailored to your requirements, down to the detail. That way, you do not only benefi t from innovations developed for companies belonging to the Group, but also from synergy effects. For example, the extremely demanding safety concepts in the avia-tion sector lead to valuable impulses for other application fi elds.

System solutions: single-stop high-tech. Functional automation is becoming ever more important, especially for mobile applications. For that purpose, Liebherr offers complete solutions which integrate all the required components, from the operating and display unit to input and output modules as well as power electronics and high-performance computers, in a single system. One-stop and well balanced systems. The networking is based on intelligent bus systems. High-perform-ance modules ensure maximum performance. At request, we also provide the suitable application and hardware-based software solutions for the application fi eld concerned. Of course, all com-plete systems by Liebherr meet the highest safety-technological requirements.

4

1

State-of-the-art manufacturing technology: the SMD assembly line Up to 16,000 components per hour are processed on the SMD assembly line7

As a customer of Liebherr-Elektronik GmbH, you can rely on a safe partnership. We take over the responsibil-ity for each of our products on all levels. Throughout the entire life cycle of a product, we remain your depend-able partner.

Top quality.The products of the Liebherr Group set quality standards for many technological fi elds. This high demand requires continuous top per-formance from Liebherr-Elektronik GmbH. A consistent monitoring system on all development and manufacturing levels ensures an exem-plary quality level and leads to the convincing functional safety and performance of our products, even under extreme conditions.

Lifelong safety. We consider ourselves responsible towards our customers from the fi rst day on and for a long time. That is why we promise reliable technologicaland logistical support throughout the entire life cycle of our products. That includes a well-organised management of discontinued compo-nents, a repair service for sub-assemblies that is always available, and a guaranteed spare-parts supply.

Responsibility – Throughout the product life cycle.

© A

irbus

6

2

Qualifi cation of electronic sub-assemblies Laser-guided manual assembly9

State-of-the-art manufacturing and testing procedures. State-of-the-art technology is used in the manufacturing process. With the fully automatic assembly based on SMD technology, up to 16,000 components can be processed per hour. Some of the components used here are so small that it takes a microscope to see them. In a THT process, boards are manually assembled on a laser-guided table. After completion, the assembled and soldered printed cir-cuit boards undergo various intensive quality and function test procedures. The testing technologies for serial pro-duction include Automatic Optical Inspection (AOI), X-ray inspection, In-Circuit Tests (ICT), and Flying-Probe Tests (FPT). In the fi nal mounting process, the assembled boards and mechanical components such as the housing, front panel, etc. are mounted together and form the fi nal sub-assembly. The complete sub-assembly then undergoes a fully automatic total-function test.

Qualification follows endurance test. The new developments of our competence centre are put through their paces before they are qualifi ed. The compo-nents must endure signifi cant strain on specially devel-oped test and simulation benches, for instance lightning strokes, moisture, or strong vibrations. Only if the result is 100% satisfactory, a new development is qualifi ed.

Fully certified. Liebherr-Elektronik GmbH has a series of certifi cations according to international industry and aviation standards. Regular internal and external audits ensure the sustain-ability of the quality-assurance measures in the individual departments.

8

Eurocopter military helicopter NH90 with fl y-by-wire fl ight controls by Liebherr

Liebherr harbour mobile crane LHM 250 in the arctic with control electronics as well as operating and display unit by Liebherr

High-speed train ICE 3 with Liebherr climate-control electronics 10 11

Reliable, even under extreme conditions.

Temperature variations, vibrations, dust, or salt water – environmental conditions are often very demanding for electronic com-ponents. Only top quality components can endure such strain and ensure permanent

functional safety. Liebherr products have a good interna-tional reputation, not least because their electronics are so reliable.

Robust, right from the start.Already in the development phase, the sub-assemblies are designed to endure real-life strain. Thus, critical environ-mental conditions such as mechanical stress, contamina-tion, and extreme temperatures are taken into account, right from the start. That is how Liebherr ensures the high stress capacity and long serviceable life of the sub-assem-blies.

Experience with extreme conditions.Liebherr products are successfully used all around the world and prove their reliability under harsh everyday conditions. Mining excavators, offshore cranes, harbour mobile cranes, high-speed trains, and aviation equipment are built to meet particularly multi-faceted requirements. Liebherr-Elektronik GmbH has many years of experience with load and safety critical applications and is therefore your competent partner for durable solutions.

3

Nitrogen supply during the stress-screening temperature test Automatic coating, to protect the sub-assembly from external infl uences 12 13

Printed circuit board coating for long-term protection. The assembled printed circuit boards are coated, either fully automatically, in a select-coat process, or manually. That protects them from environmental effects and enhances their functional safety during operation.

Intensive environmental tests. Our electronic sub-assemblies undergo practical test series. To ensure their functional reliability under severe real-life conditions, we carry out special environmental tests, for example vibration tests. For this purpose, the sub-assem-blies are vibrated in a vibration system in several axes and with various intensities for a pre-defi ned number of hours. Their function is permanently checked during the test. The test programme of Liebherr-Elektronik GmbH also includes combined environmental tests: the temperature and vibration test simulates extreme environmental condi-tions. The sub-assembly is vibrated in a vibration system and exposed to several temperature cycles during the test, for example -40 °C to +70 °C for industrial applications and -55 °C to +100 °C for aviation applications.

Verifi cation of a new development Circuit design and simulation 14 15

Innovative poweris part of our service.

Today, complex automation solutions are increasingly expected from electronic com-ponents. At the same time, the international competition in the components sector de - mands high cost-effi ciency. The develop-

ment processes must be able to keep up with the innovation cycles in the industrial sector, which are becoming ever shorter. With its research and development department, Liebherr-Elektronik GmbH promises its customers an opti-mal position in this dynamic market environment.

Ideal innovation conditions.The laboratories of Liebherr-Elektronik GmbH are always state-of-the-art. They are equipped with up-to-date testing and measuring facilities with which innovative components can be developed and qualifi ed.

A strong team for new ideas.The 140 highly qualifi ed members of the development team of Liebherr-Elektronik GmbH have comprehensive experience in electronic hardware design and broad know-how regarding aviation and industrial applications. Already to day, a special research team develops the solu-tions our customers will successfully use in their products of tomorrow.With concentrated competence, high innovative power, and state-of-the-art technology, Liebherr supports you in gain-ing a market lead: your powerful partner on the way to success.

4