084-11 Lohr, 2011-09-05

Maximum Plant Availability

Downtime is reduced thanks to the universal standardization of software and components.

Downtime is reduced thanks to the universal standardization of software and components.

Universal Standardization Reduces Downtime in Photovoltaic Production

Increasing competition and falling prices mean that a high level of production availability is essential in photovoltaic production. Standard components reduce maintenance times. Open communication, uniform software tools and effective condition monitoring systems minimize maintenance times and ensure prompt fault diagnosis and troubleshooting. A lasting reduction in downtime is achieved.

Cost pressure in photovoltaic production is increasing. Globally, manufacturers have built up significant production capacity but, at the same time, feed-in tariffs are falling in a number of European countries. It is therefore becoming increasingly important to reduce manufacturing costs while increasing the availability of production plants.

Universal Standardization

A universal standardization of software and components reduces downtime and helps to further reduce production costs and is therefore increasingly being implemented in the sector.

Standardized components minimize maintenance times and therefore achieve an increase in system availability. Maintenance engineers can focus on significantly fewer components when performing fault diagnosis and troubleshooting. For the manufacturer, the priority is the availability of components that are finely scalable in terms of function and performance. Rexroth's automation range fulfils these requirements, offering manufacturers electric drives, controls with PLC, motion, logic, CNC and robotic functions, linear technology, transfer systems and pneumatics, all from a single source.

Drive Technology with Open Interfaces

A comprehensive drive solution with multiple Ethernet interfaces is increasingly used in solar cell coating systems. Thanks to its high level of positioning accuracy and performance data of 0.1 to 3.5 kW, the Rexroth IndraDrive Cs servo drive is tailored to the requirements of the photovoltaics industry. The certified "Safety on board" safety functions, which are integrated in the drive, allow manual intervention without disconnecting the system from the power. This means that there is no need to restart the machine. Furthermore, with "Safety on board", the safety tests required are performed while the machine is in operation without operator intervention. Thanks to forced dynamics, it is no longer necessary to switch off the machine at least every eight hours. Machines equipped with the safety functions can thus operate in line with standards without being switched off.

Universal Control Solutions

In the case of drive and controller-based controls such as the Rexroth IndraControl, programming of all tasks is carried out in accordance with IEC 61131-3 via the PLC, which also supports object-oriented programming. Pre-defined functions and function blocks in accordance with PLCopen replace complex programming with parameterization and thus minimize conversion times.

Condition Monitoring Safeguards against Failures

Condition monitoring systems also reduce the downtime of photovoltaic systems. The Rexroth Productivity Agent software tool constantly analyzes drive data in the servo drives and detects potential wear, without any additional sensors. The prompt warning to the control allows replacement to be carried out before the machine fails. If axis-specific mechanical and electrical data is already stored in the software, the values to be entered during commissioning of axes are reduced to just a few parameters. The operator also receives maintenance instructions via the axis controller software.

Rexroth will be at the PVSEC 2011 in hall A1, booth B11.

Bosch Rexroth AG is one of the world’s leading specialists in the field of drive and control technologies. Under the Rexroth brand name, the company supplies more than 500,000 customers with tailored solutions for driving, controlling, and moving. Bosch Rexroth is a partner for Mobile Applications, Machinery Applications and Engineering, Factory Automation and Renewable Energies. The company provides customized solutions tailored to the needs and specifications of each individual market. As The Drive & Control Company, Bosch Rexroth develops, produces, and sells components and systems in over 80 countries. As part of the Bosch Group, Bosch Rexroth and its 34,900 associates generated approximately 5.1 billion euros in revenue in 2010.

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The Bosch Group is a leading global supplier of technology and services. In the areas of automotive and industrial technology, consumer goods, and building technology, some 285,000 associates generated sales of 47.3 billion euros in fiscal 2010. The Bosch Group comprises Robert Bosch GmbH and its more than 350 subsidiaries and regional companies in over 60 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. Bosch spent 3.8 billion euros for research and development in 2010, and applied for over 3,800 patents worldwide. With all its products and services, Bosch enhances the quality of life by providing solutions which are both innovative and beneficial.

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