DS3800NRFA1F1E
DS3800NRFA1F1E
DS3800NRFA1F1E

GE DS3800HSQD1J1E | Mark IV Series Sequence Assembly Board for Gas/Steam Turbine Control

  • Brand: GE (General Electric)
  • Model: DS3800HSQD1J1E (Variant of Mark IV Series)
  • Product Type: Sequence Assembly Board (Critical Component for Turbine Control Systems)
  • Series: Mark IV (Legacy GE Turbine Control Systems)
  • Core Function: Serves as a critical sequence control interface​ in GE Mark IV turbine control systems, designed to manage and execute sequential logic for turbine operations (e.g., startup, shutdown, load changes). It coordinates signal transmission between field devices (sensors, actuators) and the turbine control unit, ensuring orderly and reliable process execution.
  • Key Specs:
    • Bus Compatibility: VMEbus Rev. C.1 (fits into Mark IV I/O racks)
    • Form Factor: 6U Eurocard (160 mm × 233 mm, standard for Mark IV devices)
    • Status: Discontinued by manufacturer (aftermarket suppliers offer repair/replacement)
    • Weight: ~0.45 kg (1 lb)
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Part number: DS3800HSQD1J1E
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Description

DS3800HSQD1J1E: Product Overview​
The GE DS3800HSQD1J1E​ is a sequence assembly board​ belonging to the Mark IV series​ (a legacy platform for GE turbine control systems). It is engineered for sequential logic control​ in industrial automation systems, particularly in gas and steam turbine control applications. As part of the Mark IV ecosystem, it acts as a “process orchestrator” between field devices (e.g., temperature sensors, pressure transducers, servo valves) and the turbine control unit, ensuring that turbine operations follow predefined sequences (e.g., startup checks, fuel ramp-up, load stabilization).
Role in Automation Systems:
Positioned as a “sequence controller” in Mark IV architectures, the DS3800HSQD1J1E performs two primary functions:
  1. Sequential Logic Execution: Executes preprogrammed sequences (e.g., turbine startup) by processing input signals from field devices (e.g., “valve open” sensors) and triggering corresponding output signals (e.g., “fuel valve open” commands).
  2. Signal Coordination: Coordinates signal transmission between the Mark IV controller and field devices, ensuring that actions are executed in the correct order (e.g., verifying lubrication pressure before starting the turbine).
Core Functionality:
  • VMEbus Compatibility: Conforms to VMEbus Rev. C.1 standards, ensuring seamless integration with existing Mark IV I/O racks and controllers. This eliminates the need for additional adapters or modifications, minimizing installation time and cost.
  • Legacy Support: Designed to work with existing Mark IV components (e.g., I/O modules, terminal boards), reducing the cost of system upgrades. This makes it an ideal choice for power plants with aging Mark IV systems, where replacing the entire control architecture is not feasible.
  • Rugged Design: Industrial-grade components and a compact form factor (6U Eurocard) enable 24/7 operation in high-temperature, high-vibration environments (e.g., turbine halls).
Platform Benefits (Mark IV Series):
The DS3800HSQD1J1E inherits the Mark IV platform’s strengths, including:
  • Reliability: The Mark IV system is a proven platform for turbine control, with a track record of 24/7 operation in power plants worldwide.
  • Scalability: Supports expansion with additional I/O modules to accommodate growing system demands (e.g., adding more sensors to a turbine control system).
  • Easy Integration: Compatible with GE Fanuc/Emerson PLC/PAC systems, ensuring seamless integration with existing automation architectures.

    DS3800NRFA1F1E

    DS3800NRFA1F1E

Technical Specifications​
Parameter
Specification
Model Number​
DS3800HSQD1J1E (Variant of Mark IV Series)
Manufacturer​
GE (General Electric)
Product Type​
Sequence Assembly Board
Series​
Mark IV (Turbine Control Systems)
Bus Compatibility​
VMEbus Rev. C.1 (fits into Mark IV I/O racks)
Form Factor​
6U Eurocard (160 mm × 233 mm)
Status​
Discontinued by manufacturer
Weight​
~0.45 kg (1 lb)
Certifications​
CE, UL (inferred from GE industrial product standards)
Core Features & Customer Value​
1. Seamless Legacy Integration:
The DS3800HSQD1J1E’s VMEbus compatibility ensures seamless integration with existing Mark IV systems, minimizing downtime and effort during upgrades. This is invaluable for facilities with legacy Mark IV installations, allowing them to enhance system capabilities without replacing entire architectures.
2. Reliable Sequence Control:
The module’s rugged design and legacy support ensure reliable execution of sequential logic, which is critical for turbine control (e.g., preventing incorrect startup sequences that could damage the turbine).
3. Cost-Effective Retrofit:
By enabling integration with existing Mark IV components, the DS3800HSQD1J1E eliminates the need for costly system upgrades. This makes it an ideal choice for power plants with aging Mark IV systems, where replacing the entire control architecture is not feasible.
4. Easy Maintenance:
The module’s modular design allows for quick replacement during maintenance, reducing downtime. Aftermarket suppliers like Turbine Industrial​ and Radwell​ provide repair services for the DS3800HSQD1J1E, ensuring that facilities can extend the lifespan of their existing systems.

DS3800NRFA1F1E

DS3800NRFA1F1E

Typical Applications​
The GE DS3800HSQD1J1E​ is widely used in industrial automation systems for:
  1. Power Generation:
    • Controls gas/steam turbines in power plants, ensuring stable power output and efficient fuel use.
  2. Manufacturing:
    • Used in assembly lines to process digital/analog signals from sensors (e.g., pressure, flow) and control actuators (e.g., valves, motors).
  3. Petrochemical Industry:
    • Controls digital/analog signals from refinery equipment (e.g., distillation columns, pumps), ensuring safe and efficient operation in hazardous environments.

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