SPECIFICATIONS
Part No.: IS220PCAAH1B
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Size: 33.0 cm high x 17.8 cm wide
Technology: Surface mount
Temperature: -30 to 65oC
Product Type: Core Analog Module
Availability: In Stock
Series: Mark VIe
Functional Description
IS220PCAAH1B is a core analog module developed by GE. It is a part of Mark VIe control system. The Core Analog (PCAA) module and optional Core Analog (TCAT) terminal board form an integral part of the gas turbine control system, providing essential analog signal processing and distribution capabilities. With a diverse range of signal I/O functionalities, robust connectivity options, and integrated module design, these components contribute to the efficient and reliable operation of the system.
Signal I/O Capabilities
- Analog Signal I/O: The PCAA and TCAT components offer a comprehensive range of analog signal input and output capabilities, including:
- Thermocouple inputs
- 4-20 mA current loop I/O
- Seismic inputs
- Linear Variable Differential Transformer (LVDT) excitation and inputs
- Pulse rate inputs
- Servo coil outputs
- Application Compatibility: The PCAA module is versatile and can be applied in simplex and Triple Modular Redundancy (TMR) systems, providing flexibility to accommodate different system configurations and requirements.
- Terminal Board Functionality: The TCAT terminal board fans signal inputs to one or three connected PCAA modules, facilitating efficient signal distribution and management within the system.
Connectivity and Integration
- Terminal Supplement: The shield ground and 24 V field power terminals on an adjacent JGPA board complement the terminals on the PCAA and TCAT, enhancing connectivity and power distribution capabilities.
- Module Components: The PCAA module comprises a BPPx processor board, two application I/O boards, and a TCAS terminal board. This integrated setup is considered the least replaceable unit, providing a cohesive and compact solution for analog signal processing.
- Diagnostic and Replacement: It's important to note that there is no support provided to diagnose or replace individual boards within the PCAA module. This emphasizes the module's holistic design approach, focusing on overall functionality and reliability rather than individual component serviceability.
- Input and Power Connections: Input to the module is facilitated through dual RJ-45 Ethernet connectors and a 28 V DC power connector (P5), ensuring convenient and standardized connectivity. Field device I/O is achieved through 120 Euro-style box-type terminal blocks located on the module edge. Power for a JGPA board is supplied through connector P4. Additionally, module connection to TCAT is established through two 68-pin cables on connectors P1 and P2, facilitating seamless integration and communication between the components.
Design Features
- The design of the PCAA (Core Analog) module is meticulously crafted to fulfill specific operational requirements within the gas turbine control system.
- The module is ingeniously composed of four distinct circuit boards seamlessly integrated into a single physical assembly. These boards work in concert to handle various aspects of analog signal processing, ensuring a cohesive and compact design.
- The module is strategically considered the least replaceable unit within the system. This designation is attributed to the intricacy of the module's interconnections and the challenge of isolating a failure to a single board. Due to this complexity, the design emphasizes the integrity of the entire module rather than individual board replacement.
- The decision not to design the module for the replacement of individual boards stems from the difficulty in isolating failures to a single board. Acknowledging this challenge, the design prioritizes system stability and performance over the convenience of individual board replacement.
- The integration of multiple circuit boards within a single module promotes operational efficiency by streamlining signal processing and minimizing points of potential failure.
The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS220PCAAH1B?
It is a core analog module developed by GE under the Mark VIe series.
What is the module, and why is it considered the least replaceable unit?
The PCAA (Core Analog) module is a critical component of the gas turbine control system, comprising four separate circuit boards in a single physical assembly. It is designated as the least replaceable unit due to the complexity of isolating failures to a single board within the module.
Why is the module not designed for the replacement of individual boards?
The decision not to design for individual board replacement is primarily based on the difficulty of isolating failures to a single board. The integration of multiple boards into a single assembly emphasizes the integrity of the entire module rather than individual board serviceability.
What is the philosophy behind the holistic approach to the module design?
The design prioritizes system-wide reliability and efficiency. By consolidating multiple circuit boards into a single assembly, the module minimizes potential failure points, promotes operational efficiency, and enhances overall system robustness.
Are there any operational considerations related to the design of the PCAA?
Yes, operational considerations include limited diagnostic support for isolating faults to specific boards within the module. This underscores the importance of comprehensive testing and quality assurance during manufacturing and integration to ensure optimal performance.
