Heavy demand for Sinamics G120P energy-saving inverter

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Siemens Industry Automation & Drive Technologies says that the energy-saving features in its new Sinamics G120P modular frequency inverter has resulted in 'unprecedented' demand. Mark Chrimes, Business Development Manager for Siemens, comments: "The response to the new Sinamics G120P, which is specifically designed for pump, fan, and compressor applications, has been incredible. Following a successful launch in August 2010, the product has proven exceptionally popular; we are working on many enquiries for large projects at present and the interest is much greater than anticipated."

Sinamics G120P is a compact drive which provides energy-efficient operation of flow machines in building automation, the process and water management industries. 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 used for level control. Sinamics G120P inverters comprise a Control Unit (CU), a Power Module (PM) and can be optionally equipped with the Intelligent Operator Panel (IOP). They feature IP55 protection and are available six frame sizes covering power ratings from 0.37 to 90kW.

Energy-efficient features

To enable the economical operation of applications and equipment, the inverter has special functions for improving energy efficiency. It is characterised by a very low reactive power value and the integrated hibernation function enables the drive to enter an 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 per cent of the energy consumption can be achieved, while 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 fulfils 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 provides 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.

For any further information, telephone +44 (0)845 7705070 or go to

14 December 2010

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