1. Product Overview

2. Key Hardware Features

• Board Type: C-Core Analog Termination Module (CTBA), compatible with Mark V standard cabinet slots, supporting Simplex and Dual redundancy architectures.

• Interface Configuration: Equipped with 2 sets of large terminal blocks, 2 COREBUS connectors (JAI/JAJ), 5 vertical pin connectors, 1 9-pin RS-232 serial port (for TIMN diagnostics), as well as IONET and ARCNET communication links.

• Signal Processing: Onboard Metal Oxide Varistor (MOV), isolation, and filtering circuits provide 2500Vrms electrical isolation to suppress electromagnetic interference, ensuring the accuracy and anti-interference capability of 4-20mA signals, shaft voltage, and shaft current signals.

• Electrical & Environmental: Powered by +5VDC 6A; operating temperature -30°C to +65°C; PCB with standard industrial coating, anti-vibration and corrosion-resistant for harsh power plant environments.

• Diagnosis & Maintenance: 9-pin RS-232 interface supports on-site diagnostics; modular design for easy installation, replacement, and maintenance.

3. Core Functions

1. Analog Signal Termination: Centrally terminates critical analog signals such as 4-20mA I/O, shaft voltage, and shaft current, standardizes field wiring, and improves signal integrity.

2. System Communication Hub: Communicates with the STCA board via IONET/ARCNET and exchanges data with the QTBA board via COREBUS, enabling high-speed data transmission and logical linkage within the Mark V system.

3. Signal Isolation & Conditioning: Isolates, filters, and level-matches field signals to eliminate ground loops and electromagnetic interference, ensuring control accuracy and system stability.

4. Diagnostic & Maintenance Support: 9-pin RS-232 interface supports TIMN diagnostics, enabling maintenance personnel to quickly locate faults and reduce downtime.

5. Redundancy Compatibility: Supports dual redundancy configuration to enhance system reliability and avoid single-point failures.

4. Applications

• Power Industry: C-Core analog signal termination and data interaction for Mark V (LM Series) gas turbine control systems in combined-cycle and gas-fired power plants.

• Industrial Sector: Analog signal acquisition and control systems for heavy-duty gas turbines and industrial drive equipment in petroleum, chemical, and metallurgical industries.

• Scenarios: Spare parts replacement, unit overhaul, system upgrade, and retrofitting of old equipment for Mark V systems.