1. Product Overview

• DS200TCEAG1BNE: Standard DS200‑series TCEA overspeed board, Revision B, NE hardware configuration, designed for the P1 protection zone in standard Mark V cabinets, for single/redundant overspeed protection systems.

• DS215TCEAG1BZZ01A: Customized DS215‑series TCEA overspeed board (same core TCEA functions), Revision B (functional), Revision ZZ (artwork), Version 01A (firmware), equipped with EPROM for firmware storage, a dedicated upgrade/replacement model for DS200TCEAG1B, fully compatible with original system interfaces and logic.

2. Key Hardware Features

General Core Specifications

• Board Type: TCEA Emergency Overspeed Board, dedicated to Mark V P1 Protection Core, independent 16‑bit processor architecture, not dependent on main control CPU, supports single/dual redundancy.

• Core Processor: Intel 80196 16‑bit microprocessor, independently performs overspeed judgment, frequency calculation and fault interlocking, with trip response time < 8ms for millisecond‑level emergency shutdown.

• Memory: Onboard PROM/EPROM/EEPROM stores protection firmware, trip thresholds and configuration parameters permanently, preventing logic tampering.

• Signal Inputs: 4 speed pulse inputs (2 redundant per shaft for HP/LP) + 2 flame detection pulse inputs, compatible with magnetic/optical speed sensors and flame detector signals.

• Trip Outputs: 4 independent hard‑wired trip outputs (24VDC / dry contacts), directly drive fuel valves, shutdown solenoids and main steam valves for instant emergency shutdown.

• Interface Configuration: 2 bayonet connectors (JX1/JX2 for IONET communication), J7 power connector, JL trip signal connector, JW flame detector power connector; 30 configuration jumpers (J1‑J30) for IONET address, trip speed, shaft selection and pulse type setup; 3 built‑in fuses for overcurrent/overvoltage/surge protection.

• Electrical & Environmental: Powered by +5VDC / +24VDC; operating temperature -40°C to +85°C; industrial conformal coating on PCB, anti‑vibration, corrosion‑resistant and EMI/RFI‑resistant; isolation voltage ≥2500VAC (field side / system side).

• Diagnosis & Maintenance: Integrated status monitoring, self‑diagnosis and online test mode, supports channel‑level fault location for quick troubleshooting of sensor, circuit and processor anomalies.

Model Differences

• DS200TCEAG1BNE: Standard DS200 part number, NE hardware configuration, general‑purpose replacement for standard Mark V cabinets.

• DS215TCEAG1BZZ01A: DS215 specialized part number, Revision B (function), Revision ZZ (artwork), Version 01A (firmware), with EPROM, a custom upgrade board for specific units/systems, directly compatible with DS200TCEAG1B in mounting, wiring and logic.

3. Core Functions

1. Independent Overspeed Monitoring & Tripping: Real‑time acquisition of dual‑shaft speed pulses, RPM calculation and comparison with preset thresholds; triggers 4‑channel hard‑wired trip immediately upon overspeed to cut power/fuel, response < 8ms, independent of main control to avoid protection failure due to main control fault.

2. Flame Detection & Flameout Interlock: Receives flame detector pulse signals, judges combustion status; triggers flameout interlock shutdown when flame is lost/abnormal, preventing furnace deflagration and secondary combustion accidents.

3. Signal Isolation & Anti‑Interference: Full electrical isolation between input/output, suppresses industrial EMI and eliminates ground loops, ensures signal accuracy and avoids false/non‑tripping.

4. Redundancy & Safety Compliance: Supports dual TCEA board redundancy with seamless failover; complies with industrial safety standards as an independent hardware safety barrier for unit protection.

5. Configuration & Diagnosis: 30 jumpers for flexible setup of trip speed, shaft type and IONET address; real‑time fault code upload to P1 core, supports online testing, fault tracing and quick maintenance.

4. Applications

• Power Industry: Overspeed protection, emergency shutdown, flame monitoring and P1 core spare parts replacement for Mark V control systems of LM series gas turbines and industrial steam turbines in combined‑cycle, gas‑fired and steam power plants.

• Industrial Sector: Overspeed safety protection for large rotating machinery (compressors, fans, pumps) in petroleum, chemical and metallurgical industries.

• Scenarios: Mark V overspeed protection upgrade, old unit safety retrofitting, faulty board replacement and unit overhaul/maintenance.