IO Module Adapter for Legacy Base Plate Replacement

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Solution Overview

Problem

Replacing IO modules in process control systems becomes complex when the original module family is no longer manufactured, requiring extensive rewiring and testing due to differences in connector types and protocols, especially in large installations.

Innovation Solution

An adapter with specialized connection terminals and conductors facilitates seamless integration of new IO modules by reducing the number of necessary electrical connections and allowing reuse of existing wiring and bus infrastructure, even when the new module has different connectors or dimensions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the original IO module family is no longer manufactured and a different model/family is installed, then the replacement becomes more complex, but the need for replacement arises due to end-of-life status

Engineering Contradiction:

ImproveIO module availabilityVSAvoidreplacement complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

An adapter is introduced as an intermediary component between the base plate and the new IO module. The adapter contains connection terminals that interface with both the base plate connection terminals and the IO module connection terminals, enabling compatibility between different IO module families without requiring direct connection between incompatible components.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The connection interface is segmented into three distinct parts: the base plate with its connection terminals, the adapter with its own connection terminals, and the IO module with its connection terminals. This segmentation allows each component to be independently designed and replaced, with the adapter serving as a flexible intermediary that can accommodate different IO module types.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If field wiring is removed and reinstalled on a new base plate and IO module, then compatibility with the new module is achieved, but installation time and testing effort increase significantly

Engineering Contradiction:

ImprovecompatibilityVSAvoidinstallation time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The adapter is pre-configured with connection terminals that are internally connected via conductors before installation. The field wiring remains connected to the original base plate connection terminals, and the adapter is subsequently mounted to bridge the connection between the base plate and the new IO module, eliminating the need to remove and rewire field connections.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The adapter serves as a mediator that establishes electrical connections between the existing base plate infrastructure and the new IO module. The conductors inside the adapter create the necessary electrical pathways without requiring field wiring to be disconnected or reterminated.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If all instruments are tested after replacement to check for wiring errors, then installation reliability is ensured, but the testing process becomes time-consuming in large projects

Engineering Contradiction:

Improveinstallation reliabilityVSAvoidtesting time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The adapter incorporates internal conductors that are pre-established and protected within the adapter housing before installation. This pre-configured connection structure cushiones against potential wiring errors by providing a reliable, factory-tested electrical pathway between the base plate and IO module, reducing the likelihood of installation errors that would require extensive field testing.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Adaptability or versatility

If the adapter includes all necessary connection terminals and conductors, then compatibility and functionality are improved, but the device complexity increases

Engineering Contradiction:

ImprovecompatibilityVSAvoidadapter complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Multiple connection terminals and conductors are merged into a single integrated adapter component. The adapter combines the function of multiple connection points and internal wiring into one unified device that can be installed as a single unit, simplifying the overall system architecture despite the internal complexity of providing multiple electrical connections.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250338414A1IO Signal Handling Arrangement and Process Control System Comprising an IO Signal Handling Arrangement

Publication Date: 2025.10.30 ABB (SCHWEIZ) AG

AI summary

An IO signal handling arrangement includes an adapter having a first set of connection terminals connected to a first set of connection terminals of a first base plate, a second set of connection terminals connected to a second set of connection terminals of the base plate, a third set of connection terminals connected to a first set of connection terminals of a first IO module, a fourth set of connection terminals connected to a second set of connection terminals of the first IO module, a first set of conductors between the first and third sets of connection terminals and a second set of conductors drawn between the second and fourth sets of connection, where the first set of conductors are adapted to carry field device signals and the second set of conductors are adapted to carry IO bus signals.