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Hannover Fair 2013 exclusive show report

23 June, 2013

The Taiwanese automation supplier Delta Electronics used Hannover to launch a series of servodrives with a 100Mbps EtherCat capability. The Asda A2-E drives are aimed at demanding multi-axis motion control applications and offer functions such as vibration suppression, closed-loop control, 20-bit encoder and absolute encoder inputs, Safe Torque Off and torque limiting.

New from Eaton is an IP66 version of its recently-launched PowerXL drives, in ratings up to 7.5kW. The drives can be mounted next to a motor or machine, even in harsh environments. The short motor cable lengths makes EMC compliance easier, while the drives’ ability to work outside cabinets simplifies the retrofitting of older installations where cabinet space is limited.

Maxon motor has produced a larger, more powerful version of its EC 22HD heavy-duty motor designed for environments subject to extreme temperatures (above 200°C), high pressures (up to 1,700 bar), large vibrations or high vacuums. The electronically commutated, four-pole 32 HD motor can, for example, be used for downhole drilling and can operate in air or in hydraulic oil. The 32mm-diameter motors have a power rating of 220W in air or 480W in oil. 

New from Nord Drivesystems is a decentralised frequency inverter designed to be mounted on an asynchronous motor. The SK 180E (above) focuses on speed control and efficiency, dispensing with non-essential functions such as positioning, encoder feedback and sophisticated safety functions. The inverter, for use with motors from 0.25–2.2kW, is said to cut energy use by up to 30% in fan and pump applications by automatic magnetisation adjustment under partial loads.

Other new arrivals on the Nord stand included a range of IE4 motors and as well as the company’s first family of smooth-bodied motors, covering ratings from 0.37–3.2kW.

Another company demonstrating IE4 motors was Regal, whose Symax IHP range of permanent magnet AC machines promise high torque, high efficiency and increased power densities compared to standard induction motors, which they can replace on a drop-in basis. The IP55 motors have a patented insulation system which combines corona-resistant magnet wire with a low-stress winding configuration, in enhance the motor life.

Schneider Electric announced a servodrive with a 130A peak current capability for high-performance servomotor applications. The LXM 62 DC130A drive extends the LXM 62 range of multi-axis servodrives for the PacDrive automation system with a version for continuous currents up to 50A. Used with asynchronous motors, the drives can be linked to diagnostic systems via sercos III. The drive’s power density is said to be one of the highest in its class.

SEW-Eurodrive has developed a frequency inverter, with optional IP66 protection, especially for open-loop control of asynchronous motors in materials-handling applications. The Movitrac LTE-B inverters come in three sizes from 0.37–7.5kW and are factory-set for compatibility with SEW’s gearmotors, cutting start-ups to a few seconds.

SEW has also expanded its Moviaxis multi-axis servo inverter system (above) by adding a regenerative power supply module for recovering braking energy and feeding “blocks” of current back into the supply system. The MXR81 module thus offers an alternative to the existing MXR80 regenerative power supply which feeds sinusoidal current back into the supply.

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