Project F

Project Report: Bioplant SCADA and Control System Upgrade 

1. Project Overview  

This project involved a comprehensive upgrade of the Bioplant control and SCADA systems, aimed at improving reliability, maintainability, and operational efficiency. 

The existing Bioplant installation, originally developed in Germany, was based on Siemens WINCC software operating on a remote server located in Germany. Over time, the system became increasingly unreliable, with frequent breakdowns and limited access to technical support. 

To resolve these challenges, the control system was modernized using Siemens TIA Portal, and the SCADA interface was completely redesigned and migrated onto new local hardware. 

2. Project Objectives 

• Replace the legacy German WINCC-based system with a modern Siemens TIA Portal platform. 
• Develop new SCADA screens and PLC software to support updated plant equipment. 
• Integrate a new Huning feeding system and hammer mill into the existing control framework. 
• Eliminate reliance on the remote German PC and server, enabling full local control. 
• Create new database-to-SCADA and SCADA-to-database interfaces for all new process tags. 
• Commission and verify all control sequences, communication links, and operational functions. 

3. Background

The original Bioplant automation system operated through a German-engineered WINCC platform, remotely managed from Germany.

This setup posed significant issues for on-site maintenance and support, with long lead times for troubleshooting and system updates.

The plant featured 21 German-language SCADA screens, which were not user-friendly for local operators. The owner requested a complete modernization and reduction to 14 optimized screens, designed in English and aligned with updated operational requirements. 

Once the new interface was commissioned, the remote German PC and WINCC server were decommissioned and safely removed from the network. 

4. System Design and Integration

4.1 Platform Migration 

The upgraded control architecture was developed using Siemens TIA Portal, providing a unified environment for both PLC and SCADA configuration. This ensured better compatibility, streamlined development, and simplified long-term maintenance. 

The new system was deployed on modernized hardware, significantly improving performance and reliability. 

4.2 SCADA Interface Development 

New SCADA screens were developed to reflect the plant’s actual operational structure.

Although the visual design was inspired by a sister site’s interface, a direct copy was not possible due to differences in auger layout, plant configuration, and address mapping. 

Each screen was purpose-built to ensure intuitive operation, efficient process visualization, and simplified operator control. 

5. Software Development 

As part of the upgrade: 

• A new database-to-SCADA and SCADA-to-database interface was created for all new tags associated with the Siemens PLC and SCADA system. 
• New PLC software was developed to support all newly installed hardware and equipment, none of which previously existed on-site. 
• All Variable Speed Drives (VSDs) and Forward/Reverse starters were integrated into the new control logic. 
• The original German-language feeding program was carefully removed — a complex and time-intensive process due to the code structure and language barrier. 
• A new base feeding module was designed and implemented to manage the new Huning feeding system and ensure correct operational sequencing. 

6. Commissioning and Testing 

Following installation and integration, a full site commissioning process was carried out.

This included:

• Verification of all I/O communications between the PLC and SCADA systems. 
• Validation of control sequences for the Huning feeder and hammer mill. 
• Testing of database connectivity and tag synchronization. 
• Confirmation of reliable VSD and motor starter operation. 

The system was successfully commissioned, achieving full operational capability with stable and reliable performance. 

7. Outcomes and Benefits

The upgrade successfully delivered a robust, efficient, and maintainable control system, fully independent of external servers. Key outcomes include: 

• Elimination of dependency on the remote German WINCC infrastructure. 
• Simplified maintenance with a unified Siemens TIA Portal environment. 
• Improved reliability and significantly reduced system downtime. 
• Enhanced operator usability through redesigned, English-language SCADA screens. 
• Optimized process control for the Huning feeding system and hammer mill. 

8. Conclusion

The Bioplant SCADA and Control System Upgrade transformed a legacy, unreliable setup into a modern, maintainable automation platform.

By implementing Siemens TIA Portal and developing custom SCADA and PLC software, the project achieved enhanced performance, reliability, and control flexibility.

This successful upgrade has established a long-term, sustainable control solution for the Bioplant facility and set a new operational standard for similar sites within the network.