XTS | Linear product transport


AT2xxx, ATH2xxx | XTS motor modules

In the XTS motor modules, all active components are combined in a compact mounting space.

AT9xxx, ATH9xxx | XTS guide rails and movers

The guide rails and movers form the passive components of the XTS for a linear motion along a track.

XTS software

The TwinCAT 3 XTS extension enables simple configuration, simulation and operation.

First steps with XTS

The all-round package from system assembly to commissioning enables a quick and simple entry.

The linear transport system from Beckhoff

With the XTS linear transport system, Beckhoff offers a proven drive solution in which magnetically driven movers move along a travel path of fully integrated motor modules. An Industrial PC with the TwinCAT automation software enables the independent control of the movers with individual motion profiles. This results in many system-related benefits: The transport system is ready for operation immediately after assembly, as power electronics and displacement measurement are included in the XTS motor modules and the movers are completely passive. Due to different geometries of the motor modules, both an open and a closed travel path can be created and the machine footprint can be reduced by individual track layouts. The XTS not only replaces conventional conveyor belts, but also enables an innovative design of the entire machine. With the flexible motion profiles, simple to highly complex processes can be realized and the entire manufacturing process can thus be optimized.

Software functions enable flexible motion sequences

Each mover can be controlled independently of other movers and with freely movability for individual product transport on the travel path. As a property of the individual mover, the dynamics can thereby change at any time on the fly according to the respective requirement. If necessary, the movers can be synchronized to external process sequences or other movers. Group formation in motion with any number of movers as well as a moving buffer store are also possible. The individual movers are mapped as “normal” servo axes with all common motion control functions such as flying saw, electronic gearing, and cam plate. Functional enhancements in TwinCAT handle typical XTS requirements, such as automatic accumulation, centrifugal force limitation, and collision and jerk avoidance. All of these and other application-specific motion functions can easily be implemented without the complexity of the motion leading to a high complexity in the engineering.

Alternative solutions open up innovation potentials

The innovation potentials of XTS are by no means limited to highly complex motion sequences. In fact, the system offers finely scalable adaptation options with regard to the application requirements, e. g., in relation to the geometry, the number of movers, and the functional scope. This starts with simple applications, such as the purely linear motion of a mover and the extension by a second mover to create an XY motion. With the closing of the modular geometry consisting of motor modules and guide rails, an endless linear system with any installation position is ultimately created. The application possibilities can be further increased through the combination of several XTS systems, the use of comprehensive TwinCAT function blocks and the integration of robotics. If all this is consistently used together with Condition Monitoring and object-oriented controller programming, the result is a highly intelligent machine or production module in the spirit of Industrie 4.0.

Benefit from intelligent drive technology

The eXtended Transport System in the stainless steel XTS Hygienic version has tapped into a wide range of new applications. It offers advantages over classic transportation solutions, in particular in the primary area of the food and pharmaceuticals industries, as well as the manufacture or filling of liquids. With the high protection class IP 69K and the hygienic design with no concealed edges or undercuts, simple cleaning is also possible in hygienically demanding environments. The electropolished stainless steel 1.4404 AISI 316L with a roughness depth of less than 0.8 µm and the high-pressure cleaner-resistant seals made of VMQ silicone can easily withstand harsh environmental conditions.

As central components of the mechatronic system, the motor modules in the XTS Hygienic can also be quickly mounted and dismounted. The connection of the modules is particularly simple due to the lateral plug contacts for the power and communication transmission. The electronic connection contacts can be implemented with or without a power supply cable. The power supply points or the number of power supplies can be adjusted without dismounting the motor modules.

The modularity of the motor modules is completed by two system solutions for guide rails and movers. Depending on the application requirements, suitable Beckhoff stainless steel guide rails are attached directly to the motor modules with a minimum of mounting effort. This structure can then be driven on by two hygienic design mover types: a stainless steel mover for particularly hygienically demanding environmental conditions and a mover made of anodized aluminum which can transport larger payloads with higher dynamics than the stainless steel variant. The second system solution consists of using a guide rail routed in parallel with the motor modules and a mover from third-party suppliers. A cover for the mounting surface of the rail interface for the motor modules as well as magnetic plate sets for the movers are available for this.

XTS enables a high degree of flexibility for parts transport in machines and plants through the independent control of movers with different motion profiles. Due to different geometries of the motor modules, both an open and a closed travel path can be created. Until now, a mover was tied to such a travel path.

With the help of the new XTS software function Track Management, an XTS structure can be divided into individual, spatially separated track sections. These can comprise just one or any number of consecutive motor modules. The track sections in turn form building blocks from which a variety of connected travel paths can be defined. By using a suitable mechanism, such as a spindle axle or a linear motor, the track sections can be moved with the movers on it. The exchange of movers between different XTS systems becomes possible. The motor modules and movers retain their full functionality at all times, so that even the moving track sections remain fully usable sections. The Track Management is integrated into the existing TwinCAT 3 XTS Extension TF5850.

Application examples

  • Insertion and removal of movers without interrupting the running product stream
    • software-based tool change
    • individual quality control
    • Integration of optional workstations
    • Sorting out of faulty products
    • Maintenance intervals detached from the production process
    • manual workplace
  • Product buffer through the arrangement of several XTS tracks above one another
  • Secondary product stream, for example, a coating process in which the workstations can be passed through several times without changing direction with the help of a closed travel path
  • Freely configurable order of products enables, for example, the combination of different products into packages.

Benefits for the user

With individual motion profiles for each individual product, the XTS makes machine concepts possible that are far superior to previous purely linear machines with a rigid product stream. Wherever the slowest processing station determinates the speed of the complete production, the XTS can achieve a higher throughput rate via variable product speeds. By stopping at a processing station, time losses can be absorbed by accelerated individual product transport between stations. The movers are not subject to a common cycle; distances and motion profiles can be fully individualized. The processing stations are thus decoupled from each other, the processing can be carried out in the flowing product stream and the yield performance is significantly increased. At the same time, the slowest subprocess can be duplicated or even multiplied with the XTS. This additionally increases production speed and yield performance.

How XTS increases productivity:

  • local processing in the flowing product stream
  • downtimes at the processing stations are eliminated
  • decoupling of the processing stations by moving buffer
  • production speed is not determined by the slowest processing station

The XTS significantly reduces the design effort. The flexible modular system and the circulating mover motion make it easier than even before to develop machines and adapt them to the specific requirements of product manufacturers and users. For example, concepts are possible in which the XTS with the circulating product stream represents the center of the plant and all processing stations are docked to the XTS. This shortens the development time; users can use their machines faster in their own production and be present on the market faster with their products. Another factor for shortened time-to-market is the use of tried-and-tested software that replaces mechanical parts; this also significantly reduces the design effort.

How XTS reduces the time-to-market:

  • simplified machine development
  • reduced design effort
  • multiple use of tried-and-tested software replaces the repeated construction of mechanical components
  • users get higher-quality machines
  • machine becomes more flexible; faster adaptation to customer-specific requirements

Format changes are the ultimate discipline of individualized production: They typically require changeover times that interrupt the production flow and severely limit productivity. This is precisely where XTS kicks in, replacing mechanical systems with software. In combination with the flexible, individual controllability of each individual mover, format changes can now be made by changing the software parameters. Manual format changes are eliminated. The changeover times are reduced; downtimes can even be completely avoided in some cases. Tool changes are also optimized; different tool sets are inserted and removed fully automatically. For product manufacturers, this means being able to react much more precisely to changing consumer behavior. They can implement smaller batch sizes with significantly shortened product lead times and gain competitive advantages in their markets with different product sizes and individualized products.

How XTS implements format changes by software:

  • manual format changes are eliminated
    • product-specific parameter sets are called up by software
    • no downtimes
    • automatic tool change
    • fully automatic insertion and removal of different tool sets

A transport system with almost any path configuration, controlled by a single PC via magnetic fields: The XTS redefines a variety of familiar mechanical engineering parameters. It is extremely compact because the movers can circulate in extremely tight curve radii. Production areas are optimally used, as the outward and inward journey as well as the curves can be used for active material transport. The installation positions are freely selectable: previous processing methods can be transferred from the horizontal to the vertical, which means an enormous saving of space. Existing spatial conditions can be ideally exploited – without cabling, without a drag chain, but with an already integrated position measuring system. In addition, it is possible to set up parallel processing stations. In this way, complete machines can be saved, with all the positive consequences for the footprint: With increased output, the production area is significantly reduced in size and the consumption of energy and resources is decreased accordingly.

How XTS minimizes the footprint:

  • compact systems with tight curve radii of only 250 mm
  • free choice of installation position allows use of the hall height
  • different curve-geometries for optimal adjustment
  • parallel operation of several processing stations increases cycle time, one machine is sufficient