Field Device Replacement with Safe-Mode Network Isolation
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Solution Overview
Problem
In network-centric industrial architectures, replacing a malfunctioning field device is complex and leads to production downtime due to the need for manual intervention and disruption of entire plant segments, making the process tedious and error-prone.
Innovation Solution
An automated industrial field device replacement system that identifies affected devices, transitions them to a safe mode, and either stores their configuration or uses a software-based simulation to minimize downtime, allowing for seamless replacement and reduced manual effort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a field device is replaced in a network-centric architecture, then the device can be updated with new functionality and improved reliability, but the replacement process becomes more complex and requires manual intervention causing production downtime
Solution Approach 1:
The system performs preliminary actions by automatically identifying affected devices and transitioning them to safe mode before the actual device replacement occurs. This preparation work is done in advance to minimize disruption during the replacement process itself.
Solution Approach 2:
The system introduces an intermediary replacement device that temporarily assumes the functionality of the malfunctioning device. This intermediary device acts as a mediator between the failed device and the network, allowing seamless transition without complete system shutdown.
2Manufacturing precision
If manual intervention is used for device replacement, then configuration can be properly transferred, but substantial manual work is required making the process tedious and error-prone
Solution Approach 1:
The system enables self-service by automatically performing configuration backup from the malfunctioning device and restoration to the replacement device. The system serves itself by autonomously completing tasks that would otherwise require manual engineer intervention, such as establishing connections, downloading configurations, and uploading settings.
Solution Approach 2:
The system creates a copy of the device configuration from the malfunctioning device and transfers it to the replacement device. This copying mechanism ensures accurate reproduction of the original device's settings and parameters without requiring manual reconfiguration.
3Reliability
If whole plant segments are manually stopped for device replacement, then device replacement can be performed safely, but production downtime is extended
Solution Approach 1:
The system applies segmentation by isolating only the specific malfunctioning device and its directly affected devices for shutdown, rather than stopping entire plant segments. This fine-grained segmentation allows the rest of the production system to continue operating normally.
Solution Approach 2:
The system maintains continuity of useful action by keeping unaffected plant segments running during device replacement. The automated safe mode transition and configuration transfer processes allow production to continue in other areas without interruption, minimizing overall production downtime.
Data Source
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AI summary
The invention relates to an industrial field device replacement system, comprising: - an input unit; and - a processing unit; wherein the input unit is configured to receive an identification of a specific device to be replaced, wherein the specific device is in a network of a plurality of devices, and wherein the input unit is configured to provide the identification of the specific device to the processing unit; wherein prior to replacement of the specific device the processing unit is configured to determine one or more further devices of the plurality of devices that would be affected by replacement of the specific device, wherein the determination comprises utilization of the identification of the specific device; and wherein prior to replacement of the specific device the processing unit is configured to change a mode of operation of the one or more further devices from a normal mode into a safe mode such that the one or more further devices will not be affected when the specific device is not available.