2 years ago

MDA Technologies 5/2016

MDA Technologies 5/2016

A compact motion

A compact motion controller with no cabinet cooling system required With modern machines becoming more flexible and increasingly modular, the company Lenze has upgraded its 3200C controller platform. The performance of the new DIN rail mounted motion control units has been boosted with new processors. Up to double the processing speed which means higher computing power for the control of more co-ordinated axes. Because the new controllers use less current than before, heat losses are minimal so the control cabinets can be made without expensive cooling systems. The 3200C platform is a range of controller for PLC logic, motion and visualization. The upgraded Intel Atom processors run at a frequency of 1.91 GHz allowing faster processing of more complex motion systems. However the extra performance comes without any increase in costs. The 3200C has control panels with compact dimensions and no cooling fans. As the heat generated is minimal, cabinet cooling systems are not required, saving on size and cost. Furthermore the absence of cooling fans, and no batteries for the 3200C controllers, means no maintenance is required. Torque limiter with robust design and high precision Torque Limiters react to even the smallest increase of torque and disconnect the drive in a split second. The disconnection is forced, that means it is unaffected by electrical power outages. The ECE type torque limiter has a short axial design, which requires a very small installation space. Its functional principle is robust, reliable and needs just few parts. Its special disc springs offer high precision over a wide range of torque. The torque between the drive and the machine is cut within a few angle degrees. It offers couplings with a fixed switching point which means one switching point per turn. This in turn is important to retain the reference point of the machine. In case of a torque overload, the signal from proximity switch, located near the disc spring, can be used to stop the drive entirely. ECE has a keyway for the torque transmission between drive and torque limiter. Chain wheels, belt pulleys etc. are mounted on the drive shaft and screwed on the flange ring of the ECE for the torque transmission. The torque limiter ECE is available in 28 sizes, and torque ranges from 2 to 900 Nm. High precision measurement with eddy current displacement sensors Non-contact eddy current sensors from Micro-Epsilon are designed for the measurement of displacement, distance, position, oscillation and vibration. They are suitable for harsh industrial environments since, they are resistant to factors such as dirt, pressure and fluctuating temperatures. Their eddy current measuring principle allows them to measure through non-conductive materials, hence are resistant to media such as plastics, dirt and oil. Micro-Epsilon, with its new NCDT 3001 and 3005 series, offers sensors that are compact and robust. The eddyNCDT 3001 sensors are housed in an M12 body. They are used, for example, in the monitoring of the oil gap in hydrostatic bearings. As the sensor is resistant to oil and water splash, as well as high temperatures, in combination with its compact design, these sensors are ideal for integration into restricted installation space. The eddyNCDT 3005 model is a temperature compensated, i.e. even at high temperatures or temperature fluctuations from -30 to 180 °C, these sensors achieve extraordinary measurement accuracy. Its high accuracy, combined with a favorable price/performance ratio, make these sensors suitable for high volume applications and for integration into plant, equipment and machinery. V-Drive servo worm gearheads: Upgrade and extended portfolio PRODUCT NEWS Wittenstein alpha, the specialist in mechatronic drive technology, extends its portfolio of servo worm gearheads in its V-Drive Basic series. The V-Drive Basic is now also available in sizes 50 and 63 with hollow or solid shaft output and a total of 5 different reduction ratios. At just 7.4 and 12 kg respectively, the V-Drive is definitely lightweight: its smaller mass helps save energy when the gearhead is used in moving machine axes. The special geometry of the teeth provides high efficiency and a very quiet running, with a maximum of 65 dBA at full load. Designed for ambient temperatures between -15 and + 40 °C and featuring IP64 protection, the V-Drive Basic is ideally suited for price sensitive applications with no specific requirements of maximum torsional backlash. At the same time, other 2 versions in the V-Drive series have been upgraded in regards to torque and torsional backlash. The V-Drive Value and V-Drive Advanced upgraded versions offer extra torque – about 20 % more – but it is the significantly lower torsional backlash that is especially convincing: only 6 arcmin with the V-Drive Value and 2 arcmin with the V-Drive Advanced. The optimized design of the input seal guarantees these V-Drive versions a service life 25 to 50 % better than the current market standard. MDA Technologies 5/2016

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