Siemens is from Germany. Founded in 1847, Siemens AG is a global leader in the field of electronic and electrical engineering. Siemens entered China in 1872. For more than 140 years, it has unremittingly provided comprehensive support for China's development with innovative technologies, excellent solutions and products, and with outstanding quality, trustworthy reliability, leading technological achievements, The unremitting pursuit of innovation has established its leading position in the Chinese market.
After setting up offices in London in 1850 and St. Petersburg in 1855, Siemens quickly established offices in other parts of the world, such as Brussels (1871), Paris and The Hague (1879), Vienna and Warsaw (1879), Stockholm and Turin (1880), New York (1886), Tokyo (1887), Rio de Janeiro (1888), Budapest (1890), Chicago (1892) and Johannesburg (1895) Year).
Extended information:
Siemens inverter is a well-known inverter brand developed, produced and sold by Siemens of Germany. It is mainly used to control and adjust the speed of three-phase AC asynchronous motors. And with its stable performance, rich combination of functions, high-performance vector control technology, low-speed and high-torque output, good dynamic characteristics, super overload capacity, innovative BiCo (internal functional interconnection) function and unparalleled Flexibility occupies an important position in the frequency converter market.
Siemens is classified according to control scale:
It can be divided into mainframe, medium-sized computer and minicomputer.
Minicomputer: The control points of a minicomputer are generally within 256 points, which is suitable for stand-alone control or small system control.
Siemens minicomputer has S7-200: processing speed 0.8~1.2ms, memory 2k, 248 digital points, and 35 analog channels.
Medium-sized machine: The control points of a medium-sized machine are generally no more than 2048 points. It can be used to directly control the equipment and can also monitor multiple lower-level programmable controllers. It is suitable for medium-sized or Control of large-scale control systems.
Siemens mid-range computers include S7-300: processing speed 0.8~1.2ms, memory 2k, 1024 digital points, 128 analog channels, network PROFIBU, industrial Ethernet, MPI.
Mainframe: The control points of a mainframe are generally greater than 2048 points, and it can not only complete more complex arithmetic operations but also perform complex matrix operations. It can be used not only for direct control of equipment, but also for monitoring multiple lower-level programmable controllers.
Baidu Encyclopedia-Siemens