Welcome to our guide on designing high-performance HMI displays that deliver exceptional user experiences. In this article, we will explore the detailed design principles behind creating effective HMIs (Human-Machine Interfaces) that provide operators with the information they need without overwhelming them. So, let’s dive in!
Contents
The Philosophy of Display Levels
To ensure clarity and efficiency, a well-designed High-Performance HMI typically consists of four display hierarchies, known as levels. Each level focuses on a specific aspect of the process, gradually zooming in on the details. The purpose of these levels is to present operators with the information they require in a logical and intuitive manner.
Level 1: Process Area Overview
The Level 1 display serves as the starting point, offering operators a broad view or the “big picture” of the plant or facility. It presents essential information such as production levels, process efficiency, and safety indicators. Level 1 displays are primarily information-based, providing easy navigation to Level 2 displays. They also highlight major upstream and downstream processes and visualize abnormal situations and alarms.
Level 2: Process Unit Control
Moving from Level 1 to Level 2, operators gain access to more specific information and controls related to the selected process. Level 2 displays should include all the necessary details and controls required to perform most tasks in the process. It is important to design Level 2 screens in a manner that aligns with the physical layout of the facility and the Piping & Instrumentation Diagram (P&ID). However, Level 2 screens should not merely replicate the P&ID but offer a user-friendly representation.
Level 3: Process Unit Detail
Level 3 displays provide operators with detailed views and information related to specific equipment or processes. They offer runtime data, faults and alarms, speed measurements, and custom trend visuals for process values like pressure or flow. Level 3 displays also include advanced control capabilities and diagnostic information. Operators can access Level 3 displays from Level 2 displays, allowing for seamless navigation between levels.
Level 4: Process Unit Support
At Level 4, operators can access the most detailed information about sensors, subsystems, individual components, and even PLC processor performance. This level is specifically designed for advanced troubleshooting, interlock programming, and process setpoint adjustments. Level 4 displays provide comprehensive operating procedures, alarm response instructions, and abnormal situation response guidance.
FAQs
Q: Where can I order HMIs for my projects?
You can easily order HMIs online from the RealPars marketplace. Visit their website at marketplace.realpars.com and explore their wide range of options.
Q: Can you recommend any resources for further learning about High-Performance HMIs?
Certainly! For further insights, we recommend referring to the “High Performance HMI Handbook,” which offers in-depth knowledge on this topic. You can find more information about the handbook in the video description.
Conclusion
Designing high-performance HMI displays requires careful consideration of the user’s needs and the information that needs to be conveyed at each level. By following the principles outlined in this guide, you can create intuitive and efficient HMIs that empower operators to monitor and control processes effectively. Remember, in High Performance HMI design, information trumps fancy graphics. For all your automation needs and to explore additional resources, visit RealPars.
Now it’s your turn to apply these design principles and create exceptional HMIs that enhance the user experience. Happy designing!
