2nd Quarter 2010Electrical switching & drive systems & components
The power of simplicity.
By using EtherCAT for motion control, drives can be simplified because many functions that have traditionally resided in the drive can be migrated to the PC-based controller.
The AX5000 servo drive series from Beckhoff is being expanded to include drives with higher rated currents. A total of six new servo drives enhance the universally designed family for highly dynamic positioning tasks. Beckhoff is responding to the increasing demand for drives with greater power to replace pneumatic or hydraulic drives with more maintenance-friendly electrical axes, or to better cope with high dynamic demands under increased load conditions.
Since no local parameter storage is required at the drive, commissioning, maintenance and replacement are greatly simplified. All motion control functions are intelligently handled by the centralised PC-based controller. The advantage of full EtherCAT integration means that no additional interface cards are required in the drive.
The drive series from Beckhoff integrates high-end control technology while supporting fast and highly dynamic positioning tasks. The drives utilise EtherCAT for high-performance system communication that is ideal to interface with PC-based control technology. The single-channel servo drives from the AX51xx series (rated up to 25 A) and the dual-channel AX52xx series (rated up to 2 x 6 A) are available and already in use.
The AX51xx will be supplemented with servo drives rated from 60 to 170 A for higher power. The drives are designed in three sizes with rated currents of 60, 72, 90, 110, 143 and 170 A. Motors of different sizes and types can be connected without additional measures. Examples include synchronous, linear, torque and asynchronous motors. The multifeedback interface supports all common standards.
The 120 kW power packs are suitable for the replacement of hydraulic drives or for use as the main drive in machines with many small drives. Preferred applications for these high-powered drives include plastics processing, extruders, metal working, milling and boring machines.
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The EP3751-0260 EtherCAT Box module by Beckhoff connects an acceleration sensor with an inertial measurement unit - a gyroscope. This provides accurate detection of acceleration and rotational motion in addition to shock, vibration and tilt measurement, both as preprocessed values and as raw sensor data.
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In the machine manufacturing industry, more drive systems are being converted from servo-hydraulic throttle to electrohydrostatic actuation systems. The four-quadrant capability of the electrohydrostatic pump unit and servo drive used in this technology, in combination with the new Moog energy management system, allows regenerative power flows generated during braking or pressure relief to be stored and reused.
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Hägglunds Drives South Africa recently completed a retrofit project on the bucket wheel of a stacker reclaimer at Richards Bay Coal Terminal. The project entailed replacing a gearbox drive solution with a direct drive solution from Hägglunds Drives SA.
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With well over 100 units already delivered, SEW-EURODRIVE is set to continue supplying Ivanhoe Mines’ prestigious Kamoa-Kakula Copper Complex in the Democratic Republic of Congo.
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Read more...The time is now to implement a motor management strategy Schneider Electric South Africa
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Read more...PC-based motion control on a labelling machine Beckhoff Automation
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For 50 years, Bausch+Ströbel in Germany has been developing packaging and production systems for the pharmaceutical industries. The company’s goal is to offer the best technical and economical solutions for the challenges of modern industry. Its new ESA1025 labelling machine shows how this is achieved with PC-based control from Beckhoff as the central motion controller.
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Aerotech has been supplying standard product solutions such as motors, drives, controls and positioning tables since 1970. Customised motion subsystems include positioning systems on granite structures with undercarriage and vibration isolation, and also external measurement systems.
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