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Elevator drives and motors promise smoother rides

17 October, 2013

At the Interlift elevator show in Germany, Control Techniques and Leroy-Somer – sister companies in Emerson Industrial Automation – have previewed new ranges of variable speed drives and permanent magnet motors designed specifically for the elevator market. The E200 and E300 VSDs and the E27 synchronous, gearless motors are said to simplify commissioning and to improve ride comfort.

John Orrells, Emerson Industrial Automation’s elevator market strategic manager, says that the new products “take speed and ease of set-up and ride comfort to new heights”. He adds that have been developed after “extensive market research and feedback from our customers. Our research has directly influenced our engineering and design program, resulting in drives and motors designed specifically to operate together.”

The compact, silent E27 motor (above) has been designed to ease mechanical installation and to remove the constraints linked to machine room-less configuration. A central sheave simplifies the chassis while offering full access to the sheave and traction ropes. 

The new drives (below) incorporate a high-resolution multi-step S-ramp for start, run, slowdown and stopping, as well as a fast current loop for vibration-free motor control. Advanced brake control management means rollback is avoided on starting, without needing a load-sensor.

The E300 drive offers extra levels of ride comfort with direct-to-floor positioning, an advanced communications interface that supports the DCP3/4 and Modbus RTU protocols, short floor operations, and a black box “flight recorder”. When the drive is used with the E27 motor equipped with optional loadcell, ride comfort is improved because the starting torque adapts to the load.

Both new ranges of drives have an intuitive user interface which allows easy adjustment via a back-lit LCD keypad, and rapid set-up in familiar elevator language and units.

The new elevator drives and motors will go on sale during 2014.

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