Automated I/O Loop Checking for Faster Process Commissioning
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Solution Overview
Problem
Manual loop checking in industrial process control systems is time-consuming, costly, and labor-intensive, requiring multiple people to validate and verify I/O connections before commissioning and startup, especially in process industries like oil & gas and petrochemicals.
Innovation Solution
An automated method and interface using a hand-held device and a dongle to simulate I/O signals, perform loop tests, and transmit results, reducing the need for manual intervention by generating an I/O loop check file from engineering databases and executing it on a dongle connected to terminal blocks via a wireless link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual loop checking is performed by multiple people testing cables from control panel to field instruments, then validation and verification of I/O connections can be completed, but the process consumes large amounts of time, cost and manpower
Solution Approach 1:
The system enables self-service automation where the loop checking process performs validation and verification autonomously. The automated system tests I/O connections without requiring multiple manual operators, with the process self-managing the validation sequence from control panel to field instruments, thereby eliminating the need for extensive human intervention while maintaining comprehensive validation coverage
Solution Approach 2:
The patent replaces the manual mechanical testing process with an automated electronic system. Instead of people physically tracing and testing cables, an automated controller executes loop checking sequences electronically, substituting human operators with automated software and hardware that can rapidly validate I/O connections without manual intervention
2Reliability
If manual cable testing is performed by groups of people from cable source to destination, then I/O loop connectivity can be verified, but the activity is time consuming and repetitive
Solution Approach 1:
The automated loop checking system performs connectivity verification autonomously without requiring groups of people to manually trace cables. The system self-manages the entire verification process by automatically sending test signals and evaluating responses, enabling rapid validation of I/O loop connectivity while maintaining comprehensive checking coverage
Solution Approach 2:
The automated system enables continuous loop checking operations without the interruptions inherent in manual processes. Multiple I/O loops can be tested sequentially or in parallel without stopping, eliminating the repetitive start-stop nature of manual cable tracing and enabling uninterrupted productivity during commissioning and startup phases
Data Source
AI summary
A method and interface for automated loop checking of an industrial process control and automation system comprises importing wiring diagrams and alarm setpoints to operating software executing on a hand-held device from a database. The operating software uses the wiring diagrams and alarm setpoints to build an I/O loop check file. The method further includes, installing a dongle adapted to simulate I/O signals on a first terminal block. The dongle making an electrical connection to at least one I/O loop. The method further includes transmitting via a communication link the I/O loop check file to the dongle and instructing the dongle to perform an I/O loop test on the at least one I/O loop by simulating I/O signals based on the I/O loop check file. The results of the I/O loop test is transmitted via the communication link the results to the operating software.