PI 092-14 Elchingen, 2014-11-18

Rexroth extends its BODAS modular system for mobile electronics

The new BODAS controller RC10-10 series 31 from Rexroth will provide even greater support to OEMs in acquiring certification of machine safety.

New controllers and sensors provide the basis for simplified engineering
A growing number of manufacturers of construction machinery control the working hydraulics and the hydraulics for the travel drive as well as system functions electronically. They thereby reduce the fuel consumption and at the same time improve the performance and the handling of their mobile machines. Rexroth is adding a new control unit and two new sensors to its mobile electronics modular system BODAS. The “BOsch Rexroth Design and Application System” is a finely scalable system including all the hardware components, application software and engineering tools required for the electronic control of mobile working machines. BODAS components meet the high quality requirements of the automotive industry and are available long term.

Multifunctional control unit with functional safety
The new multifunctional controller RC10-10/31 is based on a high-performance TriCore 32 processor with 270 MHz, which has already been tried and tested in large production numbers in the automobile industry. It can be programmed using the high-level language “C” or IEC61131-3.

The capacity of the RC10-10/31 to provide functional safety is currently being certified in accordance with ISO 13849 and ISO 25119. This certification formally extends the already available safety planning guidelines of the RC controllers from Rexroth. OEMs thereby receive even greater support in acquiring certification of machine safety.

To simplify the software engineering, Rexroth has concurrently implemented a new modular software structure. MASAR (Mobile Application Software Architecture) enables the realization of predefined functions and software templates: Once functions have been written, programmers can reuse them for new applications or quickly generate variations. This reduces timeconsuming programming by means of simplified parameterization and accelerates the time-to-market for new construction machine designs.

For the BODAS RC controllers of series 30 there are already comprehensive solutions available for the hydrostatic travel drive (wheel and chain). Modules are being implemented for other functions.

Pressure sensor with the latest automobile technology
The new PR4 pressure sensor sets standards in the area of sensor technology. Thanks to its high load capacity, for example when dealing with pressure peaks (up to 750 bar) and thermal shock (temperature range from - 40° C to +150° C), it is optimally designed for the robust ambient conditions faced by construction machinery. It also features a high total accuracy, with a maximum deviation of 1.5% over the temperature and pressure range and service life. An integrated error diagnosis checks the signal range and increases the functional safety. The compact pressure sensor, now in its fourth generation, is based on the technology currently used in motor injection systems and is available in two different versions. PR4/600 covers the pressure range up to 600 bar, and PR4/420 up to 420 bar.

Inertial sensor for future automation
The new five-axis inertial sensor AC1 simultaneously senses three times acceleration and two times rotational speed. It is thus suitable for several different application options, such as, for example, dynamic position control in field sprayers or aerial work platforms, or for controlling the tractive force or the traction in a wheeled loader or telehandler.

Model-based engineering
To further reduce the engineering effort, manufacturers of construction machinery are relying increasingly on model-based development using Matlab and Mathworks tools. Here they simulate the functions of the control in advance and on a modular basis. Rexroth supports this approach with appropriate Matlab models. Moreover, the modules of the new standard application software from Rexroth, such as, for example, the comprehensive travel drive software Drive Control DRC40, are based on Matlab. As result, users can combine all the advantages of Matlab and BODAS.

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, Factory Automation, and Renewable Energies to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, roughly 36,700 associates generated sales revenue of approximately 5.7 billion euros in 2013.

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The Bosch Group is a leading global supplier of technology and services. In 2013, its roughly 281,000 associates generated sales of 46.1 billion euros. (NB: Due to a change in accounting policies, the 2013 figures can only be compared to a limited extent with the 2012 figures). Its operations are divided into four business sectors: Automotive Technology, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 360 subsidiaries and regional companies in some 50 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2013, the Bosch Group invested some 4.5 billion euros in research and development and applied for some 5,000 patents. This is an average of 20 patents per day. The Bosch Group’s products and services are designed to fascinate, and to improve the quality of life by providing solutions which are both innovative and beneficial. In this way, the company offers technology worldwide that is “Invented for life.”

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