OTOMASI SISTEM DESTILASI MENGGUNAKAN PLC OMRON CP1H DAN KONTROL SUHU DENGAN KENDALI AUTO TUNING PID DALAM PENAMPIL SCADA

Tito Rano Pradibto, Kusworo Adi

Abstract


Industrial world today can't be separated with the problem of automation for various production facilities, one of them is the process of distillation in industry or the oil refining industry. Distillation is the process of separating substance by boiling point, where the temperature becomes the focal point of the phase that change process so it to control of substances that aims to keep the temperature value in the range of desired values. In this study using a multilevel distillation system, so it has two set of controling temperature points.

Operation of distillation system automatically works with the help of controls Service such as PLC OMRON CP1H and temperature control with auto tuning PID (Proportional Integral Derivative). The system is equipped with SCADA (Supervisory Control and Data Acquisition) and data logger so as to facilitate the operation of automation and configuration PID parameters such as proportional coefficient (Kp), the integral time (Ti), the time derivative (Td). Modeling materials processed using methanol with 64 oC boiling point and ethanol with a boiling point of 78 °C.

Results of the research showed us that the temperature control system can use the auto tuning PID controled by a PLC can be done, a good temperature control is obtained with a small error rate. auto tuning method is still having oscillations, but a PID value will be automatically calculated quickly so that a constant parameter values obtained to get the stability of temperature. The value of maximum overshoot (Mp) of auto tuning of 9,09% and error steady state (ESS) of 1.53%. Results of calculation from the value of parameter auto tuning PID used as next tuning parameters and steady state response is obtained more quickly, with Mp of 4,61% and 0% of ESS.


Keywords


Distillation, Control, PLC, OMRON, PID, SCADA.

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