Fast and efficient communication with few cables at the stand of the Lapp Group in the BIEMH 2010
The range of products is compatible with all systems of fieldbus laid down in the world. The range offers sensor/actuator modules for as-interface, Profibus, CANopen and DeviceNet. With a standardized connection and a high class of industrial protection technique, all sensors and actuators in common use, thus offering the perfect solution for the automation decentralized in the construction of machines and installations can communicate. The costs of installation, even in the most difficult conditions can significantly reduce due to the fast and easy mounting.
Lapp gives special focus to the equipment developed specifically for as-interface. They have been especially designed for cost-effective interconnection of sensors and actuators in the as-I network. The equipment can be installed quickly and safely in a few steps. In the range as-I are available both modules with a class of protection raised as for omega rail mounting.
The IP67 variant offers a locking mechanism which guarantees, without tools, the connection to the as-I flat cable. Used aid of guide against incorrect polarity which connect by clip-on teams to the as-I cable, with a technique of penetration. The covers of metal of the IP30 teams are equipped with Terminal modular. In this way, depending on the application, you can use the technical connection with screw or spring.
For fast wiring of sensors and actuators in the field is also available, as it is natural, a full programme of cables Unitronic, distributors T e and resistor terminals, confeccionables custom connectors, as well as in different versions and lengths sensor/actuator cables, as well as the corresponding accessories.
The use of systems of bus industry has many advantages. The network of communication can be established with few cables. With them not only you can send and receive orders, but it can also be sent parameterization data, as well as error and status messages. More and more frequently used decentralized systems to serve the growing and complex tasks in automation. These units mutually exchange information and data during the production process. The exchange occurs primarily through two wire bus cables. These bus cables are acquiring ever greater importance in industrial production due to its cheap and simple handling, since that can interconnect and coordinate among themselves the various stages of manufacture.
The interconnection of components means that each Member of the network can communicate with each other. This does not happen at the same time, but following a defined process in an established order. The most widely used bus access method is the so-called counterpart (polling).
The use of the technique of bus saves costs:
- If one compares a facility built with the modern technique of automation, buses and an installation with the usual conventional wiring, investment costs are almost equivalent. But thanks to the flexibility and the highest number of functions of the technique of bus, it is possible to transmit a greater variety of information and, therefore, the machine or installation can produce a greater variety of products.
- Installation and commissioning costs are reduced by up to 30%. Considerably reduces the work necessary for the project, wiring, documentation and the location of faults. In addition to that, it is also possible to conduct tests in different parts of the installation.
- A reduction in costs as a result of the optimization of the technique of production and processes takes place in the area of production costs. In addition to the high system availability, reduces the production of defective parts, what is perceived in the form of an improvement in quality control.
- Without additional costs, they are also available auxiliary means for diagnosis and localization of failures. Times of unemployment and the loss of production due to faults or defective parts of the machine can consult and analyze with precision. A unit of indication or visualization is usually served to mark the place and the device.
For the presentation and clear classification of services and functions to be provided by a system of communication, there is standard ISO (International Organization for Standardization) of each protocol, which allows communication between systems. It describes the structure of user-level communication and representation of the information in the data in seven layers cables. Therefore, interfaces, services and functions are defined with accuracy.
The transport of all information and data often assume bus systems or networks, according to the rules of its protocols. There is therefore the exchange of information through data cables between a large number of stations and equipment. Data transport is developed following the rules of a protocol clearly defined and adapted to the application. This is necessary to make all information available in good time and safely. Additional security mechanisms prevent the falsification of data and collisions of the bus cables or network cables. The interpretation of the information transmitted is the task of the user software. There are different needs-oriented and precisely defined application profiles.
Communication systems are, in its hierarchical level, distribution and collection of information for automation tasks and operation of the facilities. Regulate, among other things, compliance with minimum time, availability and security criteria, as well as a certain minimal functionality.
With the linking of sensor/actuator level certain characteristics are controlled as time cycle, number of participants, data or information by participant, signal processing controlled by digital or analog quantities. On the other hand, processes of regulation, control and monitoring in addition to coordinating functions are defined in the area of the level of process management.
In the case of decentralized with a field bus solutions, there are two different variants: the connection of peripherals in situ and the distribution of tasks of automation. Peripherals are connected by input and output units and are linked with the control decentralized by mede a fieldbus. The advantages:
• Less costs of installation thanks to set-up times and wiring shorter.
• Short tours in the event of critical signals such as, for example, analog values.
• Greater accuracy thanks to the digital transmission of data.
• Planning and structure clearer installations
• Simple expansion and rapid changes in the short term.
