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Energy-efficient modular frequency inverter for pumps, fans and compressors

At the SPS/IPC/Drives Fair in Nuremberg the Siemens Drive Technologies Division will be presenting its new modular frequency inverter SINAMICS G120P which has been specially designed for pump, fan, and compressor applications.
This compact drive is particularly suitable for the energy-efficient operation of flow machines in building automation, the process industry and in the water management industry. The IP55 degree of protection also enables Sinamics G120P to be used under harsh ambient conditions.

The new Sinamics G120P is a modular frequency inverter with IP55 degree of protection that has been specially designed for pump, fan and compressor applications. The compact drive is particularly suitable for the energy-efficient operation of flow machines in building automation, the process industry, and in the water management industry.

Energy-efficient operation is a core requirement for users of flow machines. The new Sinamics G120P is particularly suitable for plant manufacturers that require an economical, energy-efficient and easy-to-use drive for pumps, fans and compressors. The inverter is available in the power range from 0.37 kW to 18.5 kW. Sinamics G120P comprises a Control Unit (CU), a Power Module (PM) and an operating unit, and can be optionally equipped with the Intelligent Operator Panel (IOP). The high IP55 degree of protection also enables the inverter to be operated under harsh ambient conditions, such as applications in building automation, the process industry or in the water management industry. It can also be used for the closed-loop speed control of fans and circulating pumps for heating and cooling systems, for booster pumps, or for pumps for level control.

To enable the economical operation of applications and equipment, the inverter possesses special functions for improving energy efficiency. The new inverter is characterized by a very low reactive power value. The integrated hibernation function enables energy-saving standby mode as a function of the setpoints. By automatically switching to line-fed operation at rated speed, a saving of up to three percent of the energy consumption can be achieved. The auto-ramping function enables currents to be limited and power peaks to be avoided. The inverter only has low effects on the power supply system and fulfills the requirements of the IEC/EN 61000-3-12 standard. No additional components such as line reactors are needed.The STARTER and SIZER tools familiar from the Sinamics range of drives are also available for this new inverter. The software additionally comprises a large number of application-specific technology functions and modules, such as a digital real-time clock, flying restart and PID controller. The I/O and fieldbus interfaces such as Modbus RTU, CANopen, USS and Profibus have been adapted to the special requirements. A USB interface has been integrated in the inverter for commissioning and diagnostics purposes.

The Siemens Industry Sector (Erlangen, Germany) is the worldwide leading supplier of production, transportation, building and lighting technologies. With integrated automation technologies as well as comprehensive industry-specific solutions, Siemens increases the productivity, efficiency and flexibility of its customers in the fields of industry and infrastructure. The Sector consists of six Divisions: Building Technologies, Drive Technologies, Industry Automation, Industry Solutions, Mobility and Osram. With around 222,000 employees worldwide Siemens Industry posted in fiscal year 2008 a profit of EUR3.86 billion with revenues totalling EUR38 billion.

The Siemens Drive Technologies Division (Nuremberg, Germany) is the world's leading supplier of products and services for production machinery and machine tools. Drive Technologies offers integrated technologies that cover the entire drive train with electrical and mechanical components. This includes standard products but also encompasses industry-specific control and drive solutions for metal forming, printing and electronic manufacturing as well as solutions for glass, wood, plastic, ceramic, textile and packaging equipment and crane systems. The services provided by the Division include mechatronics support in addition to online services for web-based fault management and preventive maintenance. With around 39,900 employees worldwide Siemens Drive Technologies achieved in fiscal 2008 total sales of EUR8.9 billion.

Reference Number: IDT2009112304e

Volker M. Banholzer | Siemens Industry
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