Sauer-Danfoss adds PLUS+1 inverter

4th Quarter 2009 Electrical switching & drive systems & components

The new PLUS+1 Inverter MI06 from Sauer-Danfoss is the first in a complete range of products designed to improve the efficiency and drive performance of AC motors.

The new inverter series brings improved AC motor efficiency and precise, intelligent controls for battery-powered vehicles.

OEMs can rapidly configure the inverter to manage motor and vehicle functions using the drag-and-drop PLUS+1 GUIDE graphical programming tool. Used in combination with PLUS+1-compliant AC motors, the inverter is prepared for rapid start-up on installation.

Best point performance

Based on flux vector control, the inverter ensures that the AC motor always runs at its best operating point, no matter what the speed or load mode. In addition to minimising power losses in the drive system, this secures smooth acceleration, superior manoeuvrability and improved machine productivity through more working hours per battery charge.

The overload capacity of the drive system allows vehicles to start up safely even with a full load.

Flexible control choices

OEMs have the option of using the PLUS+1 Inverter to supplement or even replace the master vehicle controller. On applications such as counterbalance forklift trucks, the intelligent inverter is a particularly cost-effective choice, fully accommodating the lifting, lowering, speed and safety control functions. For the more complex control needs of, for example, warehouse reach trucks, the inverter takes over some of the control workload from the master vehicle controller. The result is even more responsive machine control and improved performance.

The inverter’s comprehensive interface, with CAN port and multifunctional input/outputs, adds flexibility when configuring specific functions. That makes it well-suited to use on traditional battery-powered vehicles, such as forklifts, aerial lifts and tow tractors, and newer arrivals on the battery-powered market – turf care vehicles and sweepers.

Robust for long life

Sealed with a breathable, waterproof membrane, the inverters can operate in tough working environments with a high dust and moisture content and temperatures ranging from -40°C to +50°C. Copper-based IMS power electronics minimise thermal stress, helping to extend the inverter’s operating life.

Within the next year, Sauer-Danfoss plans to launch all six frame sizes that will make up the complete PLUS+1 Inverter range, catering for 2 to 30 kW and 24 to 80 V requirements.

For more information contact Ron Sheehan, Sauer-Danfoss, +27 (0)11 803 8390, [email protected], www.sauer-danfoss.com

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