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ACTIVITIES
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Industrial Automation
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In not very far previous years, control process systems operated based on mechanical technologies and analogue equipment.
Pneumatic and hydraulic technologies allowed to control the remote systems through central controller making the operational philosophy of the systems by combining all kinds of relays and contactors.
Adding timers and counters caused to raise running time and assembly capacity and naturally to making the troubleshooting complicated, had the problems for development and advancement of control systems.
But, along with the developments in industries, PLCs were gradually replaced for relay-contactor circuits. The applications for PLCs were increasingly developed in the industry because of having the benefits such as low installation and actuation costs, low physical space, troubleshooting and changing in software content indefinitely, easy to develop and repair and maintain due to modular structure, etc. primary PLCs operated as centralized.
In a centralized set, all sensors and drivers are directly connected to the central monitoring system, but in an extensive process, with thousands
inputs and outputs, the number was accounted more than the processing capacity of controllers in that time. In this case, data collection from inputs lasts more than limited time defined by system. It caused to propose DCS (Distribution Controller System) or distribution of controlling operation between several controllers. In this period, upgrading the data exchange in LAN (Local Area Network), the thought in use of the network for automation was formed. Nowadays, the applications of industrial networks, such as Modbus, Profibus and Industrial Ethernet, have been common due to immunity to noise, low installment costs, easy to test and troubleshoot, and fall in capacity of wiring.
The networks are extensively connected to all levels of automation. In lowest level, there are controllers and protective systems, conducting the different units of process by data collection from sensors and other existing equipment and directing the operators.
In higher levels, there are performed to supervise and enforce the changes in process and, totally to manage the production process. In this level of automation, there are HMI (Human Machine Interface), causing the flexible management.
PLC systems have near relations with HMI and industrial networks and other controllers of different levels of process. The primary and relatively raw data, obtained from PLCs and other equipment, is processed in this unit and then connects with operator, production management and other units in the form of comprehensible reports, tables, graphic data, all kinds of curves and sounds, alarm and messages, and it receives the users’ commands, if required.
The responsibility requires a strong software having the capacity to highly process the data. Therefore, it can be said that WinCC softwares in level of management and Protool and Wincc Flexible in other levels with high abilities have prepared a suitable domain for such activities.
as was mentioned above, it seems that although the past industry owners reluctantly used the automatic lines, nowadays there is obligatory to use the industrial automation systems largely due to the need of high precision, quality and quantity of productions.
Accordingly, offering software and hardware equipment from famous companies and relying on the technical knowledge of its own experts, Control Afzar Company provides the extensive services for national different industries. The company offers the sales and mount equipment for automation unit in three main levels of PLC, Industrial Networks and Monitoring Systems.
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© Copyright Control Afzar
Qeshm ltd. All rights reserved.
Design : Active Idea
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Unit 22,No.207,Beside Taherian
St,Shariati Ave,Tehran,Iran. Tel: (+98 21) 77655714 Fax: (+98 21) 77638757.
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