1. Product Overview

• DS200TCQAG1BHF-W01: Standard DS200-series TCQA Analog I/O Board, Revision B (functional), HF hardware configuration, W01 firmware/label version, designed for R1/R2/R3 I/O cores in standard Mark V cabinets, a general-purpose analog signal acquisition/output board.

• DS215TCQAG1BZZ01A: Customized DS215-series TCQA Analog I/O Board (same core TCQA functions), Revision B (functional), Revision ZZ (artwork), Version 01A (firmware), a dedicated upgrade/replacement model for DS200TCQAG1B, fully compatible with original system interfaces, wiring and logic, with enhanced firmware storage and diagnostic capabilities.

2. Key Hardware Features

General Core Specifications

• Board Type: TCQA RST Analog I/O Board, dedicated to Mark V R1/R2/R3 I/O cores, independent signal processing architecture, not dependent on main control CPU, supports single/redundant configuration.

• Core Processor: Intel 80196 16-bit microprocessor, independently performs signal sampling, filtering, range conversion, isolation and data upload with high sampling accuracy and fast response.

• Signal Input Channels: Supports multiple analog/pulse signals including thermocouples (K/J/T/E/R/S/B/N), LVDT displacement, 4-20mA current, ±10VDC voltage, vibration, speed pulse and servo valve feedback, compatible with TBQA/TBQC/TBQB terminal board inputs.

• Signal Output Channels: 4-20mA current output, servo valve drive, relay drive, ±10VDC analog output, directly driving actuators, instruments and alarm loops.

• Interface Configuration: 8 core connectors (2PL power, 3PL data bus, JA thermocouple, JB 4-20mA, JD trip, JE TCQC communication, JF LVDT, JG vibration); 4×34-pin and 2×40-pin connectors; 6 configuration jumpers (J1-J6), 6 status LED indicators for channel setup, range selection and fault indication; built-in fuses and surge/overcurrent protection.

• Signal Processing: Full-channel electrical isolation (≥2500VAC), high-precision instrumentation amplification, low-pass filtering, cold junction compensation (thermocouples), linear calibration; acquisition accuracy: voltage ≤±0.1%FS, current ≤±0.2%FS, temperature ≤±1℃, suppresses 50/60Hz power frequency interference.

• Electrical & Environmental: Powered by +5VDC/+24VDC (from TCPS power board); operating temperature -40°C~+85°C; industrial conformal coating on PCB, anti-vibration, corrosion-resistant and EMI/RFI-resistant; dimensions approx. 178×119×30mm, weight approx. 0.36kg.

• Diagnosis & Maintenance: LED status indication, channel-level self-test, online testing, fault code upload, supports quick location of sensor, circuit and processor anomalies, hot-swap replacement allowed (when system permits).

Model Differences

• DS200TCQAG1BHF-W01: Standard DS200 part number, HF hardware configuration, W01 version, general-purpose, fits standard Mark V cabinets, basic firmware, no extra custom storage.

• DS215TCQAG1BZZ01A: DS215 specialized part number, Revision ZZ (artwork), Version 01A (firmware), with enhanced EPROM storage, custom parameters/logic, designed for specific unit/system upgrades, directly compatible with DS200TCQAG1B in mounting, wiring and communication protocols.

3. Core Functions

1. Multi-channel Analog Signal Acquisition & Conditioning: Real-time acquisition of field signals including thermocouple temperature, LVDT displacement, 4-20mA process variables, vibration, speed, voltage/current; isolation, amplification, filtering, calibration and range conversion; output standard digital/analog signals, upload to COREBUS/3PL bus for main control system closed-loop control.

2. Analog Control Signal Output: Generates 4-20mA, ±10VDC and servo valve drive signals to control fuel valves, speed governors, excitation systems and actuators, realizing precise speed regulation, load control and temperature control.

3. Signal Isolation & Anti-interference: Full-channel electrical isolation eliminates ground loops and suppresses industrial electromagnetic interference, avoids signal distortion and maloperation, ensures safe and reliable control.

4. Communication & Data Interaction: Communicates with STCA/TCQE via 3PL bus, exchanges data with TCQC via JE, uploads acquired data and receives main control commands, synchronizes data between I/O cores and main control system.

5. Protection & Diagnosis: Monitors signal over-range, open circuit, short circuit and overcurrent, triggers alarm/protection; real-time self-test, uploads fault codes, supports online diagnosis and quick maintenance.

4. Applications

• Power Industry: Mark V control systems for LM series gas turbines and industrial steam turbines in combined-cycle, gas-fired and steam power plants, used for analog acquisition (temperature, displacement, pressure, flow, vibration, speed), servo control, safety interlocking, spare parts replacement and system upgrade.

• Industrial Sector: Analog signal monitoring and control for large rotating machinery (compressors, fans, pumps) and transmission equipment in petroleum, chemical, metallurgical and paper industries.

• Scenarios: Fault replacement of Mark V I/O core Analog I/O boards, retrofitting of control systems for old units, unit overhaul/maintenance, spare parts inventory.