The weigh feeders constitute an essential part of any production facility, where its
control and supervision system is one of the important things that should be characterized
by precision and reliability.
From this research we will try to develop
the unreliable control and supervision
system of the weigh feeders in mills of raw materials department in Tartous cement and
building materials company. The work Will focus on trying to avoid errors and problems
that the old control system suffered in order to reach the best possible performance of
weigh feeders, facilitate maintenance process and reveal the problems as they happen by
proposing controlled weigh feeders by programmable logical controllers from SIEMENS
corporation with processor (CPU 315-2 PN / DP), and design supervision and collection
data system using software (WINCC Flexible sp3 2008).
We'll apply the steps of the study practical on the weigh feeder of mill of raw
materials, and we will conduct the necessary tests to ensure the validity and accuracy of the
new control system, therefore the range of reliability.
This paper presents one of the most accurate, stable and fast to response advanced control system (PROPORTIONAL INTEGRAL DIFFERENTIAL CONTROL SYSTEM), which considered one of the special cases of closed loop control systems. Also, display and compare
different forms of control and response of sub modes of PID controller, through using programmable logical controller and programmed it to be (PID) controller, and take advantage of this system for accurate control of the three phase motor speed. In addition, the PLC program is been connected to monitoring and collecting data software, known by acronym (SCADA) for calibration of (PID) and use this software to display the result of the responses for the different types of the controller PID in the form of graphic curves. These response curves show accuracy and fast to response that make this application an integrated system that could be form the infrastructure of many practical applications like large cranes, overlapping product lines and different other applications and the use of PLC systems make them high quality and high reliability systems.
