Posted on May 8, 2012 - ( views)
The XTS drive system combines the previously separate advantages of rotary and linear systems. The result is a drive system that effectively turns the previous linear motor principle around.
In the XTS drive system (eXtended Transport System) the motor is completely integrated together with power electronics and displacement measurement. One or more wireless movers can be controlled with high dynamics at up to 4m/s on an almost arbitrary and flexible path.
The advanced mechatronic system contains all functions necessary for operation. It offers a modular, fully integrated linear motor with power electronics and displacement measurement in one device. It consists of one or more wireless movers as the moving parts, a mechanical guide rail and an Industrial PC with TwinCAT control software
The desired geometries, lengths and radii are determined by the number and type of the components selected. Complex wiring and drag chains can be eliminated. In addition, the position measurement system is already integrated. The machine footprint is fully and efficiently utilised, since the outward and return path as well as the curves can be used for active material transport. In this way, not only is hardware saved, but so is expensive production space. Speeds of up to 4m/s can be while maintaining maximum positioning accuracy.
The movers can accelerate, brake, position and synchronise themselves. They can take up absolute positions and positions relative to each other; group themselves and accumulate; create clamping forces in motion, drive through curves and along straights, recover energy through regenerative braking and use both the return paths and the outward paths for transport purposes.
This linear motor principle gives rise to new possibilities in Drive Technology:
linear motor characteristics on an endless path
any desired number of movers on a common path
modular structure, simple adaptation to the application
low spatial and power requirements
simple implementation of demanding transport tasks
low project engineering and assembly expenditure
The XTS system is simple and modularly configurable: the motor modules form a complete unit with the movers and guide rails. They contain the electromagnetic coils and all other active functions necessary for the operation of the system. The only further requirements are a power supply and an EtherCAT connection. The motor modules contain no moving parts and are not subject to any wear.
The mover contains magnetic plates which, together with the coils in the motor modules, can generate propulsive forces. It absorbs the attractive forces of the magnets on both sides and compensates them as far as possible. This means that the rollers on the movers, which are equipped with a particularly low-wear plastic surface, can move at high speed in the guide rails. A mechanically robust encoder flag conveys the mover position to the motor module.
XTS can be used in an unlimited number of ways in the most diverse industries. The solution is predestined for high-speed material handling like push product, adapt product spacing, reduce or increase speed, clamp and move, transport and discharge products or manipulations like: lift out, close, rotate, screw cap on
An irregular product flow is isolated and transferred at a constant interval and constant speed to the next workstation. Products are picked up and transported from one workstation to the next. The distances in between are traversed at high speed if the path is free, or the products move in a travelling buffer to the destination. The products can be processed in parallel in groups at slow workstations. Fast stations only process one product at a time. The return path can always be actively used.
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PCN Europe's November issue features an Industry Special concerning the Oil & Gas industry; in our technical article on the subject we look at the role rotary encoders play in the oil or gas production , in another one we discuss the opportunities fracking could offer for the valve industry. Our Product Focus on Pumps, Valves & Compressors includes among others an application story showing how screw blowers increase the energy efficiency of water treatment. You might also be interested in our case study showing you how automation and drive technology help the brewery industry to maintain their market position. This edition also presents you with many other application stories and product news from all areas of the processing industries, enhanced with datasheets and videos.