PI 016-17 Lohr am Main, 2017-04-10

Modular mechanical engineering made easy: Rexroth Motion Controls for electro-hydraulic axes

Finely scalable power range: From the single-axis controller without control cabinet up to the complex multi-axis applications in mixed operations.

The same software and identical engineering from the decentralized single-axis controller up to the multi-axis controller

Cost pressure and the shortest possible development periods drive the trend towards modularization of machinery and plants. Constructional engineers are looking for solutions in which they can freely combine electro-mechanical and electro-hydraulic axes and scale them in accordance with the requirements of the respective application without the need for major software interventions. Rexroth simplifies this modularization with a finely graded range of motion controls for electro-hydraulic axes. With the same open programming standards and engineering tools, they include a broad spectrum ranging from single-axis controllers without control cabinets to the control cabinet versions up to a multi-axis controller for a number of electro-hydraulic and electro-mechanical axes.

Multi-Ethernet interfaces and standards, such as OPC UA, guarantee the seamless horizontal and vertical networking of the electrified hydraulics. Thus, they can be integrated independently of the control unit into different automation architectures up to industry 4.0 environments.

The single- and multi-axis controls for hydraulic actuators close the control loop in a decentralized manner and unburden the higher-level control system. Rexroth is the only manufacturer using identical control hardware platforms as well as integrated software standards based on IEC 611331-3 and identical engineering tools for all intelligent drives. This provides the machine manufacturers with large degrees of freedom, with minimum cross-technology software interventions, and the option to provide varying numbers of drives in their concepts in accordance with customer-specific requirements. Program parts which have been written once can be simply transferred to all motion controls.

Digital twins shorten time to market

Rexroth software automatically considers the non-linearity of fluid technology and compensates it. With respect to the higher-level control system, hydraulic drives thus show the same behavior as electro-mechanical drives. For this purpose, Rexroth has relocated previously purely hydromechanical functions into the software. Pre-defined, best-in-class hydraulic controllers integrated there assume the regulation of position, speed, path/force, various synchronizations of several cylinders or the path-dependent braking. The Wizard-supported commissioning does not require any deeper knowledge in hydraulics.

For the design and configuration of electro-hydraulic axes, Rexroth provides virtual images of the motion controls and their hydraulic actuators. With them, machine and system manufacturers can validate their concepts on the computer and avoid under- or overdimensioning without having to build a prototype first. Additionally, the control simulation enables the programming and validation of movements before or during the machine assembly. This reduces the time to market and the engineering costs significantly.

Intelligent, connectible hydraulics by Rexroth offer all physical advantages of fluid technology, with the same automation-technical degrees of freedom and the same comfort as offered by their electro-mechanical counterparts.

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, and Factory Automation 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, more than 31.100 associates generated sales revenue of approximately 5.4 billion euros in 2015.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 390,000 associates worldwide (as of December 31, 2016). According to preliminary figures, the company generated sales of 73.1 billion euros in 2016. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT company, Bosch offers innovative solutions for smart homes, smart cities, connected mobility, and connected industry. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to create solutions for a connected life, and to improve quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 450 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. The basis for the company’s future growth is its innovative strength. At 120 locations across the globe, Bosch employs 59,000 associates in research and development.

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Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573

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