Description
DS200DTBAG1AAA: Product Overview
The GE DS200DTBAG1AAA is a digital contact terminal board designed specifically for GE Speedtronic™ Mark V distributed control systems (DCS), the industry standard for gas, steam, and hydro turbine control in power generation. As part of the Mark V ecosystem, it acts as a “signal gateway” between field devices (e.g., emergency stop switches, valve position indicators) and the turbine control unit. Its primary role is to terminate and distribute digital contact signals—converting raw switch states into a format suitable for the control unit—ensuring reliable data transmission for turbine stability and efficiency.
Engineered for the demanding conditions of turbine halls, the DS200DTBAG1AAA features a robust PCB layout and high-isolation signal processing to withstand vibration, dust, and electromagnetic interference (EMI). Its legacy compatibility makes it ideal for retrofitting aging Mark V systems—common in power plants operating turbines for 20+ years—where replacing the entire control architecture is cost-prohibitive. Whether used in 7EA gas turbines or 9F steam turbines, the DS200DTBAG1AAA ensures reliable signal termination, directly extending the operational life of critical turbine control systems.
Role in Automation Systems
Positioned as a “field-to-controller signal interface” in Mark V architectures, the DS200DTBAG1AAA performs two key functions:
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Signal Termination: Receives digital contact signals from field devices (e.g., a switch indicating a turbine valve is open) and terminates them into the module’s input channels.
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Signal Distribution: Routes terminated digital signals to the turbine control unit via the Mark V bus, enabling real-time monitoring and control of field devices.
Its core value lies in bridging the gap between field devices and the control unit—a critical step in maintaining turbine stability, as even minor signal inaccuracies can lead to process instability (e.g., turbine speed variations) or equipment damage (e.g., excitation system failure).
Core Functionality
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High-Isolation Signal Processing: The DS200DTBAG1AAA uses optocouplers to isolate field devices from the controller, protecting sensitive electronics from voltage spikes and EMI in harsh industrial environments.
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Flexible Terminal Configuration: With 190 terminals (two blocks of 95), the board can accommodate a wide range of field devices, reducing the need for additional wiring.
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Legacy Compatibility: Fully compatible with existing Mark V components (e.g., STCA, TCQC boards), reducing the cost of system upgrades. This makes it an ideal choice for power plants with aging Mark V systems, where replacing the entire control architecture is not feasible.
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Easy Maintenance: The board’s modular design allows for quick replacement during maintenance, reducing downtime. The terminal blocks are clearly labeled, simplifying troubleshooting.
DS200DTBAG1AAA
Technical Specifications
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Parameter
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Specification
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Model Number
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DS200DTBAG1AAA
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Manufacturer
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General Electric (GE)
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Product Type
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Digital Contact Terminal Board
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Series
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Mark V (Gas/Steam Turbine Control)
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Form Factor
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6U Eurocard (160 mm × 233 mm)
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Bus Standard
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Proprietary Mark V bus (compatible with Mark V Series controllers)
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Terminal Count
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190 (two blocks of 95 terminals each)
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Isolation
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Galvanic isolation (optocouplers, 1500 V AC channel-to-channel)
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Operating Temperature
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0°C to +55°C (32°F to 131°F)
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Storage Temperature
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-40°C to +85°C (-40°F to 185°F)
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Humidity
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5–95% non-condensing
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Weight
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~0.2 kg (0.44 lbs)
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Certifications
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CE, UL (inferred from GE industrial product standards)
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Core Features & Customer Value
1. Reliable Signal Termination:
The DS200DTBAG1AAA’s high-isolation signal processing ensures that the turbine control unit receives accurate data from field devices. For example, in a power plant, the board can reliably terminate the signal from an emergency stop switch, allowing the control unit to trigger an immediate shutdown to prevent damage.
2. Flexible Configuration:
With 190 terminals, the board can accommodate a wide range of field devices, reducing the need for additional wiring. This flexibility saves time and money during installation, especially in retrofit projects.
3. Rugged Industrial Design:
The board’s operating temperature range (0°C to +55°C) and compact form factor make it suitable for harsh industrial environments. Its DIN rail mounting option simplifies installation in crowded control cabinets.
4. Easy Integration:
Mark V bus compatibility ensures seamless integration with existing Mark V systems, minimizing downtime and effort during upgrades. This is invaluable for facilities with legacy Mark V installations, allowing them to enhance system capabilities without replacing entire architectures.
DS200DTBAG1AAA
Typical Applications
The GE DS200DTBAG1AAA is widely used in industrial automation systems for:
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Power Generation:
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Terminates digital contact signals from gas/steam turbines (e.g., valve position switches, emergency stop buttons) for real-time control, ensuring stable power output.
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Manufacturing:
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Used in assembly lines to terminate digital signals from sensors (e.g., limit switches, proximity sensors), enabling precise control of manufacturing processes.
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Petrochemical Industry:
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Terminates digital signals from refinery equipment (e.g., pump start/stop commands, valve positions), ensuring safe and efficient operation in hazardous environments.
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