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| Energy-efficient modular frequency inverter  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.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. write your comments about the article :: © 2009 Construction News :: home page |