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Hannover Fair 2013 exclusive show report

23 June, 2013

The Austrian motor-maker ATB, owned by China’s Woolong Holdings, announced a range of IE4 asynchronous cast-iron motors. The FS 280-355 Super Premium series cover ratings from 90–315kW, and are available in two- and four-pole versions.

ATB is also developing a package (shown above) consisting of an explosion-proof IE3 motor and an inverter housed in a flameproof enclosure. This package, targeting the chemical industry, will cover ratings from 0.75–11kW and will reduce energy consumption by 50–80%, according to ATB. A prototype is currently being built and will be tested independently. The package is expected to reach the market in early 2014.

Baumüller has been busy extending its range of motors. At Hannover, it was showing a new range of servomotors with nominal speeds up to 6,000 rpm and torque ratings up to 140Nm. These DSP motors have the same external design as the company’s DSC synchronous motors and DSD servomotors, with identical mechanical and electrical interfaces, and the same cooling choices – uncooled, air-cooled or water-cooled.

Baumüller also had a new range of high-torque motors (called DST2) with integrated thrust bearings and top speeds of 600 rpm. In addition, the company has extended its DS range of synchronous motors, giving them about 10% more nominal power, thus allowing machine-builders to save space. The DS2 motors, available in air- or water-cooled versions in ratings up to 300kW, have a top speed of 4,300 rpm.

Baumüller has also extended its b maXX 5000 range of converters (above) for power ratings up to 315kW, offering individual power supplies and up to three plug-in safety modules, allowing users to choose which safety functions they want (including SLS or SLP). The converters, suitable for single-axis applications, have integrated rectifiers and DC link capacitors, and offer a choice of five cooling systems. At present they support EtherCat and Varan, with Profinet IRT and Powerlink due to be added soon.

Italy’s Bonfiglioli group used Hannover to unveil a new range of permanent magnet AC synchronous motors offering six levels of torque from 1.7–37Nm. The BMD brushless motors use a salient-pole technology for low inertia and high torque, while rare-earth magnets help to deliver high accelerations and to withstand high overloads without the risk of demagnetisation. Options include flywheel masses, various forms of feedback and holding brakes.

Bonfiglioli also had a new family of compact, plug-and-play inverters that come in two sizes for controlling motors from 0.2–2.2kW. The S2U inverters (above), powered from 230V single-phase supplies, include Modbus ports and can interface with external gateways using most common communications protocols.

Control Techniques was showing how the open Ethernet capabilities of its new Unidrive M generation of drives can deliver high synchronisation accuracies. In a demonstration on its stand, a drive was controlling the synchronisation between two Unimotor HD servomotors monitored by an IP network camera, with all of the components linked via an open IEEE 1588 Ethernet network.

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