IO Module Adapter for Base Plate Retrofit Without Field Rewiring
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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 time-consuming reconnection and testing of field wires due to the need for new base plates and IO modules with different models.
Innovation Solution
An adapter with specialized connection terminals and conductors facilitates the connection between existing base plates and IO modules, reducing the number of required electrical connections and allowing seamless integration of new IO modules without altering field device connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the original IO module family is no longer manufactured and a new base plate with different model/family IO module is installed, then the system can use updated hardware, but the field wiring must be removed and reconnected requiring time-consuming loop checks and testing
Solution Approach 1:
The patent introduces an adapter as an intermediary component between the base plate and the IO module. This adapter contains connection terminals that interface with both the base plate connection terminals and the IO module connection terminals, allowing electrical connections to be maintained without altering field device connections. The adapter acts as a mediator that enables compatibility between different IO module families while preserving the existing field wiring infrastructure.
Solution Approach 2:
The patent segments the connection interface into multiple independent parts: the base plate connection terminals, the adapter connection terminals, and the IO module connection terminals. This segmentation allows each component to be independently replaced or updated without affecting the others. The adapter can be installed on the base plate and connected to the IO module, enabling modular replacement of IO modules while maintaining stable connections to field devices.
2Adaptability or versatility
If field wiring is removed and reconnected to a new base plate and IO module, then hardware compatibility is achieved, but the complexity of the replacement process increases significantly
Solution Approach 1:
The adapter serves as an intermediary that simplifies the replacement process by providing pre-configured connection interfaces. Instead of removing and reconnecting field wires to a new base plate and IO module, the adapter maintains the existing connection topology while enabling compatibility with different IO module families. This reduces the replacement complexity to simply installing the adapter and connecting the IO module.
Solution Approach 2:
The adapter is designed with universal compatibility to work with multiple IO module models and families. The connection terminals on the adapter are configured to interface with standard base plate connection terminals and various IO module connection terminals, making the adapter a multi-functional component that can accommodate different hardware configurations without requiring custom wiring solutions.
3Reliability
If all field wires are toughed and reconnected to ensure proper connections, then connection reliability is improved, but the installation time and effort increase substantially
Solution Approach 1:
The adapter is pre-configured with connection terminals that are already arranged to match the base plate and IO module interfaces. This preliminary configuration eliminates the need for现场 toughing and reconnection of field wires during the replacement process. The adapter maintains existing reliable connections while enabling quick installation of new IO modules, thus preserving connection reliability while dramatically improving installation productivity.
Data Source
Figure 1~2
Figure 3~4B
Figure 5~6
AI summary
An IO signal handling arrangement comprises an adapter (30) having a first set of connection terminals (32) connected to a first set of connection terminals of a first base plate, a second set of connection terminals (34) connected to a second set of connection terminals of the base plate, a third set of connection terminals (36) connected to a first set of connection terminals of a first IO module, a fourth set of connection terminals (36) connected to a second set of connection terminals of the first IO module, a first set of conductors (54) between the first and third sets of connection terminals (32) and a second set of conductors (56) drawn between the second and fourth sets of connection, where the first set of conductors (54) are adapted to carry field device signals and the second set of conductors (56) are adapted to carry IO bus signals.