Client Challenge
A major wood processing plant required a multi-year effort to modernize its control systems by upgrading 16-20 legacy PLC-5 CPUs to ControlLogix controllers. The upgrades were necessary to improve system performance, reliability, and scalability while maintaining compatibility with the plant’s Wonderware InTouch server-based application.
The primary challenge was completing each upgrade during a 10-hour down-time window. The project demanded a highly efficient process to ensure that the new control systems were fully operational by the end of each planned outage. Any unplanned downtime could result in significant operational disruptions and financial losses.
Our Solution
Over a 5-year engagement, DSI Innovations worked closely with the client to develop and implement a comprehensive methodology for completing the upgrades within the tight downtime constraints. Key elements of the solution included:
- Pre-Debugging and Testing:
- Developed a rigorous process to nearly 100% debug and validate the converted software prior to the changeover. This included extensive offline testing and simulations to minimize on-site troubleshooting.
- Modified and tested the Wonderware InTouch server-based application for each PLC upgrade to ensure seamless integration and functionality.
- Efficient Changeover Execution:
- Coordinated closely with the client to plan and execute each upgrade during the scheduled 10-hour downtime events.
- Performed hardware replacements, software updates, and commissioning tasks efficiently to ensure the plant was fully operational by the end of each downtime period.
- Ongoing Collaboration:
- Maintained a collaborative relationship with the client to continuously refine and improve the upgrade process based on lessons learned from each completed upgrade.
The Results
To date, DSI Innovations has successfully completed approximately 10 of the planned upgrades, achieving remarkable outcomes:
- No Unplanned Downtime: The rigorous pre-debugging and testing process ensured that all upgrades were completed without exceeding the scheduled downtime, minimizing operational disruptions.
- Improved System Performance: The new ControlLogix controllers provided enhanced performance, reliability, and scalability, enabling the plant to operate more efficiently.
- Seamless Integration: Modifications to the Wonderware InTouch application ensured compatibility and optimized functionality with the upgraded PLCs.
- Customer Confidence: The proven methodology and successful execution of each upgrade reinforced the client’s confidence in DSI Innovations’ expertise and commitment to excellence.
This multi-year project highlights DSI Innovations’ ability to deliver complex control system upgrades under strict time constraints, providing long-term value and reliability to the client’s operations.
