1 year ago

MDA Technologies 5/2014

MDA Technologies 5/2014

Product News LVD Sercos

Product News LVD Sercos III: high performance low voltage servo drive by Servotronix Servotronix introduces the LVD Sercos III, a compact, high-power and intelligent servo drive for low voltage 15-48 VDC bus servo motion applications. The drive is ideal for driving small low voltage brushless, stepper or brushed DC motors. In the case of stepper motors, the control is done via a closed loop commutation with no step loss. This sophisticated stepper control delivers a servo-like performance at the low cost of a stepper solution. The LVD fully supports Sercos III to provide high performance, fast multi-axis control at a competitive price. The drive is about the size of a smartphone, and weighs 250 g. With 12 Arms peak current and a switching frequency of up to 100 KHz, the LVD is one of the most powerful low voltage drives in the industry. The drive’s high PWM switching frequency, combined with the field oriented control (DQ) and space-vector modulation, enables operation of low inductance motors while minimizing current ripple and eliminating acoustic noise. Separate logic and bus power supplies allow safe motor power-off while maintaining the drive state, and a fast restart. WEG extends its offering with products by Württembergische Elektromotoren WEG added Württembergische Elektromotoren’s (Balingen, Germany) products to its portfolio. The product line includes the UEX series: electronically commutated (EC) compact motors with attached four-quadrant electronic controllers, and extends WEG’s offering. These compact EC motors with CANopen interface cover the power range from 60 to 250 kW and run at speeds up to 3,000 min -1 . They are available in versions with an attached gear unit (UEXG 3.3 TH and UEXG 513 TH) or as bare motors (UEX 3.3 TH and UEX 513 TH), with IP54 protection rating. The series is designed as standard for a supply voltage of 24 V DC or 42 V DC and can be operated from a power supply. With the electronic controller mounted directly on the motor, installation at the user site has been simplified. The standard operating mode is speed control, but the compact drives can also be used for torque control or positioning tasks. Hall commutation sensors are used for motor speed control. The electronic controller and the motor communicate with each other over the CAN interface, while communication with the drive is possible via the CAN bus or digital inputs. The compact motors have several monitoring circuits: temperature monitoring to protect the winding and the electronics, speed monitoring, and overvoltage/undervoltage monitoring. Metal bellows-cardan shaft with CFRP intermediate tube by R+W The company R+W Antriebselemente has expanded its product portfolio with a metal bellows-cardan shaft with an intermediate tube made of CFRP (ZAL model). Due to its very low mass moment of inertia, the zero backlash cardan shaft is particularly suitable for very high speeds. Thanks to a special support for the metal bellows, an intermediate bearing for the shaft is no longer required and distances up to six meters can be bridged. The intermediate axis has split clamping hubs on both sides, which allow radial and easy assembly. The model series is available graded according to torque in seven different series from 10 to 800 Nm. Depending on the series, a bore diameter from 5 to 72 mm can be achieved. Thanks to the metal bellows, which are made of highly flexible stainless steel, the intermediate axis can also compensate for axial, lateral and angular shaft misalignments. Rolled ball gear drives for miniature applications For positioning tasks in miniature applications, Hiwin recommends the small ball-gear drives with cylindrical single nut from the RSIT-series: the models with diameters of 8, 10 and 12 mm, as well as a pitch of 2.5 or 4 mm, are suitable, among others, for pick and place tasks in automation technology. Where standard requirements are set to the accuracy, the rolled ball-bearing drives offer alternative or ground designs: three accuracy classes with a maximum deviation of 0.023, 0.052 or 0.21 mm per 300 mm path are available. If higher repeat accuracies are needed, the manufacturer will deliver the ball gear drives in a design with reduced axial play. Due to the screw-in angle, the cylindrical individual nuts can be easily integrated into the construction. 38 MDA Technologies 5/2014

ubrizierungsebebe 2 I rubrizierungsebene Fluid Power technology magazine Grand opening of Argo-Hytos in Yangzhou On October 25, 2014, Argo-Hytos celebrated the grand opening of the manufacturing plant in Yangzhou, China. On an area of 2,500 square meters hydraulic components and systems are manufactured and assembled. At two o’clock in the afternoon, Christian H. Kienzle, CEO of Argo-Hytos, his daughters, Nicola and Christine Kienzle, and Mr. Chen Xi, district manager of the Guangling region, welcomed the guests, cut the ceremonial red ribbon and wished the new facility success and growth. Afterwards, the 200 guests were asked into the beautifully decorated production plant, where more surprises awaited. Mr. Li Li, chairman of the CHPSA (China Hydraulics Pneumatics & Seals Association), Mr. Chen Xi, district manager of the Guangling region, and Mr. Rauen from the German engineering association VDMA (Verband Deutscher Maschinen- und Anlagenbau) offered their warmest congratulations. Between speeches, the guests were treated to traditional Chinese music and dance performances. Afterwards, Andreas Briegel, new managing director of Argo-Hytos Yangzhou, opened the Bavarian-style buffet. An amazing fireworks display that lasted almost thirty minutes – an opening present by the industrial park GIP – marked the grand finale of the ceremony. The opening of the Yangzhou branch clearly demonstrates the commitment of Argo- Hytos to China as an industrial powerhouse. On an area of 2,500 square meters hydraulic components and systems are manufactured and assembled. Approximately 60 people will be employed at Argo-Hytos Yangzhou by the end of the year. Other sales offices of Argo-Hytos in China are located in Shanghai, Beijing, Shenzhen, Xiamen and Hong Kong. New challenges Andreas Briegel, new Video General Manager Argo- Hytos China, about his new role. MDA Technologies 5/2014 39


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