- High-volume, low-profit margin operation requires the best from every batch
- Seamless integration on a single EtherNet/IP network
- Optimizes processes by deploying controller-based modular predictive control (MPC) on the pasteurizer
- Offers real-time energy monitoring, scalable engineering practices and standardization
- Reduced batch cycle time by 20 minutes using an MPC-based controller
- Increased productivity from 5 to 5.5 million liters a day
- Increased energy savings by reducing clean-in-place (CIP) cycles and delivering better temperature control
A growing middle class in India has created a growing market demand and increased consumption of dairy products.
This dairy, one of Asia’s largest, has a processing capacity of 50,00 lac liters of milk a day. With the increasing demand for quality milk throughout India, the plant is challenged to increase production for various dairy products. To meet demand, they need an integrated liquid milk plant.
The goal of the expansion was process optimization, manpower reduction (doing more through automation) and faster time to market. The dairy also focused on maintaining low operating margins.
In addition, the control systems of various plants would need to integrate with the systems in the dairy. The plant required greater visibility and productivity, while optimizing resources including water, air, gas, electric and steam (WAGES).
The goals of the plant included reducing batch cycle time to increase productivity of plant, and creating a flexible storage matrix for raw materials to improve operations.
Given the scope and complexity of the project, the dairy recognized they needed a single vendor to manage the design and implementation of the control system. Choosing a company with the right set of skills and experience was critical.
The dairy selected Rockwell Automation due to its extensive experience in automation and global reach. With a local sales office and distributor located close to the project site, Rockwell Automation had the required expertise and partnerships to manage the entire project from initial design through engineering and implementation.
Effective solutions included seamless integration on a single EtherNet/IP network; process optimization by deploying controller-based modular predictive control (MPC) on the pasteurizer; real-time energy monitoring; scalable engineering practices and standardization.
Rockwell Automation Global Solutions implemented a batch solution that:
- Monitors and controls 50 LLPD of milk daily.
- Allows operators to create and run different recipes, specify daily production rates and run multiple batches in parallel via the batch production entry system.
- Provides trending, alarming, and exception handling, and real-time monitoring of parameters at the refrigeration plant for energy saving.
- Allows the plant manager to have complete and accurate production information at any given time, and provided different types of reports, including performance, quality and material.
The solution is built on:
- The PlantPAx® distributed control system using a common control engine with a common development environment to provide high performance in an easy-to-use environment. The system’s tight integration between the programming software, controller, and I/O modules reduced development time and cost at commissioning and during normal operation.
- ControlLogix® L7X controllers from various plants integrated on one EtherNet/IP plant-wide network and Add-on Instructions (AOI) to increase productivity and make troubleshooting easier.
- E300™ electronic overload relays for better motor control, protection and predictive diagnostics.
The project was delivered by the Rockwell Automation Solutions Business through various OEMs including GEA Process, IDMC, Tetra Pak, Frick India and Forbes Marshall. Each of these OEMs relied on Rockwell Automation control systems to enable plant-wide visibility and real-time monitoring. The dairy is now in discussions to create real-time dashboards for production and utility data.
The solution increased productivity from five to 5.5 million liters per day. The dairy now enjoys a significant energy savings as clean-in-place (CIP) cycles have been reduced and temperature control is more precise and also, faster.
Overall, the solution offers equipment OEE monitoring and real-time, role-based dashboard reporting tools for better decision-making.
The results mentioned above are specific to this dairy’s use of Rockwell Automation products and services in conjunction with other products. Specific results may vary for other customers.
ControlLogix, E300 and PlantPAx are trademarks of Rockwell Automation Inc.