SIEMENS STL Programming | Chemical Treatment Plant control in SIEMENS STL - TIA Portal
Автор: PLC Tutor
Загружено: 2025-09-18
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SIEMENS STL Programming | Chemical Treatment Plant control in SIEMENS STL - TIA Portal
The Neutralization and Cooling System in a Chemical Treatment Plant is automated using SIEMENS TIA Portal with Statement List (STL) programming to achieve accurate control of both pH levels and process temperature. The PLC continuously acquires data from field instruments such as pH probes, level transmitters, and temperature transmitters, then processes the logic to regulate dosing of neutralizing agents (acid or alkali) and manage cooling devices including heat exchangers and circulation pumps. Interlocks, alarms, and safety routines are programmed in STL to prevent overdosing, minimize thermal stress, and maintain safe operating conditions. This systematic control strategy ensures reliable chemical treatment, safeguards downstream equipment, and upholds environmental and safety compliance standards.
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