GE DS200DCFBG2BNC MRP569662

Description

Product Description

The GE DS200DCFBG2BNC is a critical communications and fiber optic interface board designed for the GE Mark V and Mark VI gas/steam turbine control systems. This module, also referenced under the manufacturing part number MRP569662, serves as a Data Communication Fiber-optic Board, providing high-speed, noise-immune communication links between the turbine controller and other critical systems or remote I/O racks. The primary function of the GE DS200DCFBG2BNC is to convert electrical signals from the controller’s internal bus into optical signals for transmission over fiber optic cables, and vice-versa. This enables reliable data exchange in the electrically noisy environment of a power generation facility over long distances, supporting essential functions like distributed I/O, peer-to-peer controller communication, and connection to plant networks. The reliability of this module is paramount for maintaining synchronized control and protection across the turbine-generator system.

Product Parameters

• Product Type: Fiber Optic Communication Interface Board (for Mark V/VI).
• System Compatibility: Designed for specific locations within GE Mark V or Mark VI Speedtronic™ turbine control cabinets.
• Primary Function: Provides fiber optic transceiver interfaces for high-integrity serial data communication.
• Communication Protocol: Implements GE’s proprietary, deterministic turbine control network protocols (e.g., for <H1> network, <H2> bus, or communication with HMI panels).
• Connectors: Features ST or other standard fiber optic connectors for duplex or simplex fiber cables.
• Data Rate: High-speed serial communication suitable for real-time turbine control data.
• Electrical Interface: Connects to the turbine controller’s backplane or internal bus (e.g., VME bus).
• Diagnostics: Includes status LEDs for power, transmit (Tx), and receive (Rx) activity on each fiber channel.
• Power: Powered from the control rack’s backplane.

Advantages and Key Features

• Superior Noise Immunity: The use of fiber optic communication by the GE DS200DCFBG2BNC completely eliminates issues with electromagnetic interference (EMI), radio frequency interference (RFI), and ground loops that plague copper-based communication, which is critical in the high-power switching environment of a turbine deck.
• Long-Distance Communication: Allows the turbine controller to communicate reliably with devices located hundreds of meters away, such as remote excitation systems, vibration monitoring racks, or distributed I/O in auxiliary skids, without signal degradation.
• High Data Integrity and Security: Fiber optic links are extremely difficult to tap into, providing a secure data path. The deterministic protocol ensures time-critical protection and control data is delivered without corruption.
• Galvanic Isolation: Provides complete electrical isolation between connected devices, protecting sensitive controller electronics from voltage transients and faults occurring in remote equipment.
• Critical System Integration: As a genuine GE component, it is fully compatible with the Mark V/VI hardware and firmware, ensuring reliable integration into the turbine’s protection and control sequences.

Application Case Studies

• Turbine-to-Excitation System Link: In a power plant, the GE DS200DCFBG2BNC board in the Mark VI cabinet establishes a fiber link to the digital excitation system (e.g., a GE EX2100). This carries critical signals for automatic voltage regulator (AVR) control and protection, immune to the strong magnetic fields around the generator.
• Remote Vibration Monitoring Interface: The turbine controller uses this board to connect via fiber to a separate rack housing vibration monitoring modules (e.g., Bently Nevada 3500). This ensures clean transmission of vibration data for protection trips and diagnostics, far from the electrical noise of the turbine.
• Peer-to-Peer Communication in a Combined Cycle Plant: For a multi-shaft combined cycle plant, fiber links between the gas turbine Mark VI and the steam turbine Mark VI controllers, facilitated by these boards, allow for coordinated plant-wide control and load management.

Comparison with Competing Products

The GE DS200DCFBG2BNC is a proprietary communication component within the GE Mark series ecosystem. Its functional equivalents are fiber optic communication cards within other OEM turbine control systems, such as Woodward NetCon or Siemens T3000 system fiber modules. Compared to using industrial Ethernet switches with media converters, this board is specifically designed for the deterministic, real-time protocols and harsh electrical environment of turbine control. Its key advantage is its certified performance and guaranteed interoperability within the GE Speedtronic system. Third-party fiber solutions would lack the protocol support and hardware/driver integration, making them unsuitable.

Selection Suggestions and Precautions

• Selection Suggestion: The GE DS200DCFBG2BNC MRP569662 is selected only as a direct replacement spare part for a failed board in an existing, specified GE Mark V or Mark VI turbine control system. The selection is dictated by the specific cabinet drawing and bill of materials for that turbine.
• Precautions:
  1. Exact Replacement is Mandatory: This part number is specific to a board function and revision. You must verify it is the exact replacement for the failed board’s location and function (e.g., H1 comm, H2 bus). Using an incorrect board can disrupt critical communication and cause a turbine trip.
  2. Fiber Optic Handling Expertise: Installation requires careful handling of the fiber optic connectors. They must be kept perfectly clean (use lint-free wipes and approved cleaners) and free of dust. Contaminated connectors will cause high data loss and communication failure. Avoid bending the fiber beyond its minimum bend radius.
  3. Configuration and Addressing: Some boards may have switch settings or require specific firmware. Ensure the replacement board is configured identically to the original (switch positions, firmware version) before installation.
  4. System Impact: Replacing a communication board in a live, redundant system may be possible with proper procedures, but in many cases, it may require a turbine shutdown or placing the affected communication path in a maintenance state. Always consult the system’s maintenance manual and follow lock-out/tag-out (LOTO) procedures.

TRIC0NEXDI3301. DCS
TRIC0NEXD03401.
TRICONEXMP3101.
TRIC0NEX20064-320.
TRIC0NEX2058.
TRICONEX2551.DCS