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Hannover Fair 2015 exclusive show report

09 June, 2015

Danfoss announced an option for its VLT AutomationDrives that provides safety up to Pl d Cat 3 / SIL 2 when used in a ProfiSafe network in combination with the VLT Profinet MCA 120 option. The new MCB 152 option allows certified safety functions to be integrated easily with minimal wiring. It has two safe digital inputs for connecting sensors, reducing the need for PLC safe I/O modules.

The Taiwanese manufacturer HiWin was showing a range of AC synchronous servomotors in ratings from 50–1,000W which, it says, can deliver high torque (with peaks from 0.48–14.3Nm) across the entire speed range up to 4,500 rpm. The FR series brushless, permanent magnet motors (below) have low torque ripple, high power densities and low mass moments of inertia, making them suitable for dynamic tasks such as high-frequency reversing.

The Welsh drives-maker Invertek made its Hannover debut and reports a high level of interest with visitors from more than 30 countries, most of them representing new potential business. There was particular interest in the new Optidrive E3 general-purpose drive which is due to enter production in August.

Lenze was demonstrating a family of synchronous servomotors with mid-level dynamic performance. The compact IP65-protected MCM motors (below) come in three sizes with power ratings from 0.2–2.5kW and torque ratings from 0.6–26.4Nm. Resolver feedback is standard, with multi-turn sin-cos encoders as an option. The smooth-bodied motors are aimed at simple positioning tasks.

Nord was celebrating its 50th anniversary with a racing car simulator on its stand actuated by six inverter-controlled axes. The simulator, capable of responding to steering commands in real time, demonstrated the dynamic, precise control of asynchronous motors. Visitors to the Nord stand included the German chancellor, Angela Merkel, and the Indian prime minister, Narendra Modi (below).

The Swiss motor-maker Portescap launched a 16mm brushless, slotless motor which it claims to be one of the highest performing in its class. The 16ECH motor is optimised for high continuous torque at low to medium speeds, and has a rated speed of about 60,000 rpm. A high-efficiency magnetic circuit reduces iron and recirculation losses – the main causes of stator heating – while a patented EC motor coil helps to deliver more torque and mechanical power than similar motors.

SEW-Eurodrive was highlighting a range of inverters designed from the outset for recycling. At the end of their working lives, users can return the Movi4R-U inverters to SEW which will take them apart and recondition the reusable parts and feed them back into production. Other parts will be recycled.

SEW was also showing new encoder and fieldbus option cards for its IP55-protected Movitrac LTP-B inverters (below) which come in power ratings from 0.75–160kW. The cards for HTL/TTL encoders allow the inverters to be used in speed-controlled applications, expanding their setting range, and improving control quality. The fieldbus option cards support Profibus DP, Profinet, EtherCat, Ethernet/IP, Modbus/TCP, DeviceNet and BacNet.

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