DS200TCCAG1BAA Gas Turbine Control Board Card

Description

Product Overview

The DS200TCCAG1BAA is the core I/O expansion board card of the GE Mark V gas turbine control system, specifically designed for real-time control of heavy-duty gas turbines and combined cycle power plants. This module provides high-precision analog quantity acquisition and digital control interfaces, undertaking key tasks such as temperature/pressure monitoring, fuel valve control, and speed protection. It is suitable for power control in fields such as power generation, oil and gas, and ship propulsion.

Core functions and technical highlights

Technical characteristics of functional modules

16-channel 24-bit high-precision ADC channels for analog quantity acquisition (supporting thermocouple /RTD/4-20mA)

Digital control 32-channel isolated DI/DO (dry contacts, switch response time <2ms)

High-speed communication dedicated TCC bus interface (synchronization cycle with the main controller ≤10ms)

The redundant architecture supports dual-module hot backup (automatic switching time <50ms)

Fault diagnosis on-board self-checking circuit (channel-level open circuit/short circuit/out-of-range alarm)

Technical Specification Sheet

Details of category parameters

Electrical characteristics

16-channel analog input: <br> – Thermocouple (K/E/J type) ±80mV range <br> – RTD (PT100/1000) three-wire system <br> – 4-20mA (250Ω sampling)

Digital I/O 32 channels (configurable) : <br> -DI: 24V DC/ dry contact <br> -DO: relay output (5A@30VDC)

Power supply voltage: 24VDC ±10% (redundant input terminals)

Maximum power consumption: 25W (full load)

Performance parameters

ADC resolution: 24 bits (effective accuracy: 18 bits)

Sampling rate: 10Hz (full-channel scan)

Temperature measurement accuracy: ±0.1°C (RTD mode)

Machinery and Environment

Dimensions (L×W×H) : 235mm × 120mm × 45mm

Installation method: VME rack slot (compliant with IEEE 1014 standard)

Operating temperature: -25°C to +70°C

Protection grade IP20 (to be installed in the control cabinet)

Communication interface

The main control is connected to the TCC bus (optical fiber, 100Mbps).

Diagnostic interface RS-485 (Modbus RTU protocol)

System integration characteristics

• Mark V system compatibility

• Supports seamless collaboration with CPCI main controllers (such as DS200CTBAG1A)

• Automatic synchronization clock (IEEE 1588 PTP protocol)

Signal conditioning capability

Programmable filtering (cut-off frequency 0.1Hz-1kHz)

Thermocouple cold end compensation (on-board temperature sensor)

• Safety interlock

• Overspeed protection (hardwired trigger at ≥110% of rated speed)

Real-time monitoring of pressure fluctuations in the combustion chamber

Typical application scenarios

Key signal types for industry control functions

The start-stop sequence control of the speed/vibration/exhaust temperature of the gas turbine in the combined cycle power plant

Pressure/flow/valve feedback for fuel valve opening regulation (PID closed loop) of oil and gas booster station

Load distribution shaft power/lubricating oil pressure of ship power propulsion system

Anti-surge control of inlet flow rate/outlet pressure for industrial drive compressors

Maintenance and diagnostic functions

Diagnostic items, detection methods, response measures

The channel disconnection current loop open circuit detection (4-20mA) triggers the AI_OPEN alarm

The signal over-limit hardware comparator (±10% range redundancy) forces the output of a safe value

When the module communication is interrupted and the heartbeat packet times out (≤100ms), the standby module will be automatically switched

The power supply fault voltage monitoring circuit records events to SOE (1ms resolution)

Compatible spare parts and upgraded models

Model description and compatibility instructions

The basic version of DS200TCCAG1AAA (without redundant functions) is replaceable and requires configuration modification

The firmware of the upgraded DS200TCCBG1AAA (with HART protocol support added) needs to be upgraded to Mark V v7.0+

The IS200TCCAG1ABA enhanced protection type (-40°C to +85°C) is suitable for offshore platforms

Certification and Standards

• Safety certifications: UL 508 (Industrial control equipment), IEC 61508 SIL 2 (Single Channel)

• Electromagnetic compatibility: EN 61326-1 (Immunity to Industrial environments)

• Environmental tests: IEEE C37.90 (Surge Immunity), MIL-STD-810G (Vibration)

• Industry standards: API 670 (Mechanical Protection System), NFPA 85 (Combustion Safety)

Precautions

1. Installation requirements
• Do not share power with the frequency converter (it is recommended to install an isolation transformer)

The analog signal lines should use twisted-pair shielded cables (with a single-point grounding of the shielding layer).

2. Maintenance cycle
Calibrate the analog channel every two years (accuracy drift < ±0.15%)

Replace electrolytic capacitors every five years (in high-temperature environments)

3. Troubleshooting
• LED status code: Green light (running)/Yellow light (Alarm)/Red Light (Fault)

• Error code Query: Read via PCMCIA diagnostic card (GE dedicated tool)

Declaration: Technical data is based on the GEH-6721E Mark V system manual (Document No. : GEK-113888), and the actual performance is subject to the hardware version Rev.C. This model has been discontinued. It is recommended to upgrade to the DS200TCCBG1AAA series.

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