THE CONVERSION PROCESS OF DCS TO PLC-SCADA SYSTEM IN A MEDIUM SIZE PLANT

Yıl 2003, Sayı: 005, 135 - 146, 15.12.2003

Nihat Ada Yılmaz Aslan Serdar Tunaboylu

Öz

The process conducted at Eti Gurnus has complex process control system

and it is working under automation with many instruments. The observation of

analog and digital input/output assigned in all units of the Eti Gumus plant and their

PID control were managed by Distributed Control System (DCS). It was required to

update and/or design new system in order to support new units that will be added in

the future and solve the problems accruing in the software hardware of the DCS. In

addition, proposed control system to Eti Gurnus should not be expensive and it

should be compatible with other systems.

Programmable Logic Controller (PLC) and Supervisory Control and Data Acquisition

(SCADA) were preferred and used instead of DCS in the system. Ethernet and

Modbus + protocol were used to communicate using all variety of the advanced

technology to obtain user-friendly system.

In this paper. PLC and SCADA were compared with DCS. The design criteria of

control system setup. application of the methods and alternative solution were

explained in detail.

Anahtar Kelimeler

Distributed Control System (DCS), Programmable Logic Control (PLC), Process Control

ORTA OLÇEKLi BiR PROSESiN DCS'DEN PLC-SCADA SiSTEMiNE DONUSTURULMESi UYGULAMASI

Öz

BlI makalede, orta olcekli bir endUstriyel prosesin PLC-SCADA sisternine

donusturulerek eski sistemin darbogazlannm giderilmesi incelenmlstir.

PLC ve SCADA sistemleri tarutilarak DCS ile karsilasunlrnas: yapilrmsnr. Proses

kontrol sisteminin kurulmasmdaki tasanrn kriterleri. uygulanan metotlar vc altcmatif

cozumler detayh olarak ele almnnsur.

Yapilan cahsmalar scnucunda sistcmde DCS yerine guclu bir PLC ve SCADA

kullanilarak kullarush ve gorse I bir sistem olusturulrnustur.

Anahtar Kelimeler

Programlanabilen Lojik Kontrolor (PLC), İşlem Kontrol, Dagılmış kontrol sistemi (DCS)

Kaynakça

• [1] Ada, Nihat, PLC-SCADA Sistemleri DCS ile Karstlasttrtlmast, D.p.D. Fen Bilimleri Enstitususu Y.lisans tezi, (2003), 68 s.
• [2] Dorr, J. V.N., ve Bosqui, L.B., Cyanidation and Concentration of Gold and Silver Ores, Mcflrawe Hill Co, (1950), 509 p.
• [3] Yildrz, N., Proses Kontrol ve Ogiitme Devrelerinde Uygulamast, Madencilik Dergisi, (1996), 23-40.
• [4] Krupp Industrietechnic, Process Plant I+C, 15,21, (1985),1-49
• [5] Jacob, J. M., Industrial Control Electronics, Prentice-Hall, (1989), 577 p.
• [6] Fischer & Porter Co, DCI System Distributed Operator's Console, 4, (1985),1-77 p.
• [7] Groupe, Schneider., Modicon IBM Hostbose Devices User's Guide, AEG Schneider Automation, (1996), 189 p.
• [8] Groupe, Schneider., Concept Block Library lEe. Schneider Automation, (1998), 225 p.
• [9] AEG Schneider Automation, Modicon TSX Quantum Automation, AEG S.A., (1996), 30 p.
• [10] PC Soft., Wizcon, the Wise way to control, PC soft international Ltd., 1998,694 p.
• [11] FaUCI,J.L., PLC or DCS: Selection and Trends, ISA, Elsevier Science Ltd. 36,1, (1997), 21-28
• [12] Fischer & Porter Co, DCI-4000 Product Bulletining Fischer & Porter, 40, 4, (1984),1-16
• [13] Fischer & Porter Co, Instruction Bulletining for the DCI-4000 Distributed Control Unit, Fischer & Porter Company, 1, (1985),1-7
• [14] Stivelly, K.H., Low-Budget High-Performance Distributed Control System, lEE, 4, (1996), 2421-2427p.
• [15] Shaw, T., , PLC or DCS Which is Better for you, Electrical Construction & Maintenance, (1999)