Universal I/O Base Plate Layout for Mixed Field Signal Wiring
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Solution Overview
Problem
The complexity of connecting field devices to I/O modules in process control systems due to the need for multiple base plates and varying signal types, voltages, and redundancy configurations leads to labor-intensive, time-consuming, and costly planning, ordering, and installation processes, often requiring qualified personnel and complicating changes in signal types or redundancy levels.
Innovation Solution
A universal I/O module arrangement with a single base plate capable of accommodating various I/O modules for different signal types, including analog and digital inputs/outputs, and voltage levels, using a local bus for fieldbus communication, and allowing for easy changes by simplifying the connection of multicore cables based on signal types, reducing the need for multiple base plates and unnecessary signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple base plates are used to accommodate different signal types and voltage levels, then the system can interface with various field devices, but the device complexity and installation complexity increase significantly
Solution Approach 1:
The patent implements a universal base plate design that can accommodate multiple types of I/O modules (analog input, analog output, digital input, digital output, RTD, thermocouple) through standardized sockets and terminal blocks. The base plate includes multiple terminal blocks with different configurations (e.g., 4-terminal, 5-terminal, 6-terminal blocks) that can be selectively connected to support various signal types and voltage levels (24V, 48V, 120V, 230V) without requiring separate base plates for each module type.
Solution Approach 2:
The universal base plate is divided into functional segments including multiple terminal blocks (TB1, TB2, TB3, etc.), socket modules, and connection components that can be independently configured. Each terminal block can be selectively connected to specific sockets based on the required signal type, allowing the system to be segmented into functional units while maintaining overall universality.
2Manufacturing precision
If multiple base plates with different configurations are deployed, then specific signal types can be handled appropriately, but the planning, ordering, and installation time increase
Solution Approach 1:
The universal base plate is pre-configured with multiple terminal blocks and connection components in standardized positions during manufacturing. The terminal blocks are pre-labeled and arranged to match specific socket configurations, so that during installation, the technician only needs to connect the appropriate terminal block to the corresponding socket based on the I/O module type, rather than selecting and configuring entire base plates.
Solution Approach 2:
The system uses configurable connection parameters where terminal blocks can be selectively connected to different sockets based on the required signal type and voltage level. The base plate maintains physical universality while achieving signal-type specificity through configurable connection topologies that can be changed without replacing hardware components.
3Measurement precision
If qualified personnel are used for wire connection and cross-connection, then connection accuracy improves, but the labor cost and installation complexity increase
Solution Approach 1:
The terminal blocks and connection components use color-coding and visual indicators to identify different signal types, voltage levels, and connection purposes. This visual differentiation allows installers to quickly identify the correct connections without requiring deep knowledge of signal routing, reducing the need for highly qualified personnel while maintaining connection accuracy.
Solution Approach 2:
The universal base plate acts as an intermediary device that simplifies the connection between field devices and control systems. It provides standardized interfaces and pre-organized terminal blocks that mediate the complex wiring requirements, transforming a complex many-to-many connection problem into a series of simple, standardized connections.
4Adaptability or versatility
If changes in signal types or redundancy configurations are required, then system adaptability improves, but the base plate changes become difficult and time-consuming
Solution Approach 1:
The universal base plate provides a dynamic reconfiguration capability where terminal blocks can be disconnected and reconnected to different sockets based on changing requirements. The standardized socket interfaces and modular terminal block design enable hot-swapping and reconfiguration of signal types and redundancy configurations without replacing the entire base plate, making the system adaptable to changing process requirements.
Data Source
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AI summary
An I/O module arrangement (10) for a process control system comprises a first base plate (12) for at least one I/O module (14), the first base plate (12) comprising a first socket (16) for a first I/O module (14) and a first set of connection terminals (18) for connection of the first I/O module (14) to a first set of wires leading to a first group of field devices of the process control system, the first base plate (12) being adapted to allow the first and any other I/O module that is attached to it to be any type of I/O module operating on input and output signals of any type of field device.