Description
IS200EXTBG1AAA: Product Overview
The GE IS200EXTBG1AAA is an EXTB (Extended Terminal Board) control board designed specifically for GE Mark VI gas and steam turbine control systems, a legacy platform renowned for its reliability in industrial power generation. As part of the Mark VI ecosystem, it acts as a “signal gateway” between field devices (e.g., turbine blade position sensors, fuel flow meters) and the VMEbus controller, ensuring accurate signal transmission and real-time monitoring—critical for maintaining turbine stability and efficiency.
Role in Automation Systems:
Positioned as a “field signal interface” in Mark VI architectures, the IS200EXTBG1AAA performs two primary functions:
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Signal Acquisition: Receives digital/analog signals from field devices (e.g., a thermocouple measuring turbine exhaust temperature) and converts them into a format suitable for the VMEbus controller.
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Signal Routing: Directs processed signals to the VMEbus controller for real-time analysis (e.g., adjusting fuel flow to maintain optimal efficiency) and routes control commands from the controller to field actuators (e.g., solenoid valves).
Core Functionality:
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VMEbus Compatibility: Conforms to VMEbus Rev. C.1, ensuring seamless integration with VME64 backplanes and controllers (e.g., GE Fanuc 90-30 series). This allows the board to work with existing Mark VI components without major system upgrades.
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Flexible Signal Handling: Supports multiple signal types (LVDT, thermocouple, 4–20 mA, ±10 V DC) through configurable input channels, making it adaptable to diverse field devices.
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Redundant Control: Equipped with Close Relay 41, the board enables redundant control mechanisms, ensuring fault tolerance and system uptime—critical for high-risk industrial applications where downtime can lead to significant financial losses.
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Rugged Design: Industrial-grade components and a compact rectangular form factor enable 24/7 operation in high-temperature, high-vibration environments (e.g., power plant turbine halls). The normal coating provides protection against dust and minor environmental impacts, extending the board’s lifespan.
Platform Benefits (Mark VI Series):
The IS200EXTBG1AAA inherits the Mark VI platform’s strengths, including:
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Reliability: The Mark VI system is the industry standard for gas turbine control, with a proven track record of 24/7 operation in power plants worldwide.
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Legacy Compatibility: The board is designed to work with existing Mark VI components (e.g., I/O modules, contactors), reducing the cost of system upgrades.
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Scalability: Supports expansion with additional I/O modules to accommodate growing system demands (e.g., adding more sensors to a turbine control system).
GE DS3800HLEA1C1B
Technical Specifications
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Model Number: IS200EXTBG1AAA (Variant of IS200 Series)
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Manufacturer: GE (General Electric)
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Product Type: EXTB Control Board
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Series: Mark VI (Gas/Steam Turbine Control)
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Form Factor: Rectangular (compact design for space optimization)
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Bus Standard: VMEbus Rev. C.1 (supports 8/16/32-bit data transfer)
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Contact Inputs: 3 (configurable for various field devices)
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Power Supplies: M1 and M2 (dual power inputs for redundancy)
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Relay Usage: Close Relay 41 (for redundant control)
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Operating Temperature: -10°C to +50°C (14°F to 122°F)
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Storage Temperature: -40°C to +85°C (-40°F to 185°F)
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Humidity: 5–95% non-condensing
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Weight: Approximately 0.45 kg (0.99 lbs)
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Certifications: CE, UL (inferred from GE industrial product standards)
Core Features & Customer Value
1. Reliable Signal Transmission:
The IS200EXTBG1AAA’s VMEbus compatibility and galvanic isolation (via optocouplers) ensure accurate signal transmission from field devices to the controller, even in electrically noisy environments. For example, in a power plant, the board can reliably measure turbine exhaust temperature (via a thermocouple) and transmit the data to the VMEbus controller, which adjusts fuel flow to maintain optimal efficiency.
2. Flexible Configuration:
Configurable contact inputs allow engineers to customize the board’s functionality for different field devices, reducing the need for additional signal conditioning hardware. This flexibility saves time and money during installation.
3. Redundant Control:
The inclusion of Close Relay 41 enables redundant control mechanisms, ensuring fault tolerance and system uptime. This feature is particularly valuable in critical applications where downtime can lead to significant financial losses or operational disruptions.
4. Rugged Industrial Design:
The board’s operating temperature range (-10°C to +50°C) and compact rectangular form factor make it suitable for harsh industrial environments. Its normal coating provides protection against dust and minor environmental impacts, extending the board’s lifespan.
GE DS3800HLEA1C1B
Typical Applications
The GE IS200EXTBG1AAA is widely used in industrial automation systems for:
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Power Generation:
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Monitors digital signals from gas/steam turbines (e.g., valve position switches, emergency stop buttons) and communicates them to the VMEbus controller for real-time control.
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Manufacturing:
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Used in assembly lines to monitor the status of limit switches, proximity sensors, and other digital devices, enabling precise control of manufacturing processes.
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Petrochemical Industry:
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Controls valves and pumps in chemical plants, ensuring safe and efficient operation in hazardous environments.
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