1. Product Overview

2. Key Hardware Features

• Processor: Equipped with an Intel 80196 microprocessor, onboard erasable PROM modules store firmware and control programs, supporting program updates.

• Interface: Two 50‑pin connectors (JCC, JDD) for connecting to TBCA terminal boards to access RTD/thermocouple temperature signals; integrated status LED indicator for on‑site fault diagnosis.

• Signal Channels: Supports 8 thermocouple (TC) inputs, 4 RTD inputs, 32 single‑ended / 16 differential analog voltage inputs, 16 analog voltage outputs, 4 4‑20mA current outputs, covering common industrial analog signal types.

• Electrical & Environmental: 24VDC power supply; operating temperature -40°C to +85°C; PCB with standard conformal coating, anti‑EMI, anti‑vibration and corrosion‑resistant for harsh industrial environments.

• Architecture Compatibility: Standard rack‑mounted slot installation, fully compatible with Mark V cabinets, supports Simplex and TMR triple‑modular redundancy architectures for high system reliability.

3. Core Functions

1. Analog Signal Acquisition: High‑precision acquisition of field thermocouple, RTD, voltage/current sensor signals, with signal isolation, filtering, amplification and linearization correction to eliminate interference and improve accuracy.

2. Data Conversion & Transmission: Converts analog signals to digital signals, exchanges real‑time data with main controller and other I/O boards via Mark V internal data bus, uploading process data and receiving control commands.

3. Analog Output Control: Outputs standard voltage/current signals to drive actuators, control valves, frequency converters and other field devices for closed‑loop control output.

4. Fault Diagnosis & Status Monitoring: Real‑time self‑diagnosis of board, channel, power and communication status, triggers alarms on abnormality, supports on‑site LED status indication for quick fault location.

5. Firmware Configuration: Firmware can be updated via PROM modules to adapt to different unit control logic and signal range requirements.

4. Applications

• Power Industry: Gas turbine, steam turbine and combined‑cycle power plant control systems;

• Industrial Sector: Heavy‑duty power equipment, large drive units, excitation systems and process control for analog monitoring and control;

• Scenarios: Spare parts replacement, equipment overhaul, system expansion and technical retrofit for Mark V control systems.