New converters by Siemens for DC technology

DC technology is commonly used in a large number of applications, especially for main drives. The good control characteristics for speed and torque, as well as the wide speed control range, and high rotational accuracy particularly for low speeds are good reasons for using DC drive systems. The Siemens portfolio of Sinamics drives now has a converter for DC applications which means that the functions and expansions of the Sinamics range can now also be used. The engineering and commissioning of the new Sinamics DC Master converter are performed with the standard Sinamics tools Sizer and Starter. The advanced operator panel AOP30 and the numerical basic operator panel BOP20 are used for commissioning and operation. The Profibus and Profinet interfaces and analog and digital interfaces enable the Sinamics DC Master to be integrated in existing and new automation solutions without significant overhead.

The Sinamics DC Master is designed as a scalable drive system and is thus suitable for both basic and demanding applications such as rolling mills, wire-drawing machines or extruders, and for drives in cable railways and lifts. Depending on the relevant application, the converter can be flexibly adapted in its function and performance. For scaling the computing performance the standard Control Unit, the advanced Control Unit, or a combination of the two, are available. The devices can be supplied for two-quadrant or four-quadrant operation, depending on the application in question. The rated direct current of the devices ranges from 15 to 3,000 A. This range can be extended by connecting the DC converters in parallel.

The Sinamics DC Master combines open-loop control, closed-loop control and power unit in a single device. The converter thus has a compact and space-saving design. Redundancy concepts ensure high availability, therefore enhancing the efficiency and productivity of applications and systems.

Siemens AG is a global powerhouse in electronics and electrical engineering, operating in the industry, energy and healthcare sectors. For over 160 years, the company has stood for technical achievements, innovation, quality, reliability and internationality. In addition, Siemens is the world’s biggest provider of ecofriendly technologies. Around €23 billion, or nearly one-third of the company’s revenue, is generated by green products and solutions. In fiscal 2009, ended on September 30, 2009, Siemens had revenue of €76.7 billion and net income of €2.5 billion. At the end of September 2009, the company had around 405,000 employees worldwide.
Siemens resumed the operations of its subsidiary in the Czech Republic in 1990. Currently, with 11,000 employees, Siemens belongs among the largest employers in the Czech Republic. In the fiscal year 2008/2009, Siemens Czech Republic reported a turnover of CZK 30 bn.
Further information is available at www.siemens.com and www.siemens.cz.