GE DS200DCFBG2BNC

Description

Product Overview

The GE DS200DCFBG2BNC is a critical power supply and control module designed for the Mark Vle turbine control system, part of GE’s legacy Speedtronic series for gas and steam turbine management. This specialized module plays a dual role: it functions as a power supply board, converting incoming AC or DC power to the regulated voltages required by the system’s logic and I/O boards, and it also provides essential control functions, such as the oscillator and synchronization circuitry for the system’s master protective functions. The reliability of the GE DS200DCFBG2BNC is paramount, as it underpins the entire control system’s stability for critical rotating equipment. Engineers rely on the precise engineering of the GE DS200DCFBG2BNC to ensure uninterrupted turbine operation, protection, and sequencing. In the ecosystem of Mark Vle spare parts, the GE DS200DCFBG2BNC is a high-priority component due to its central role in system power integrity and control timing.

Product Parameters and Specifications

• Manufacturer: GE (General Electric), part of the Speedtronic™ Mark Vle series.

• Module Type: Power Supply & Control Function Board (often referred to as a “Oscillator/Regulator” or “Power Oscillator” board).

• Compatible System: GE Speedtronic Mark Vle Gas Turbine Control System.

• Primary Functions:

  • Power Supply: Generates regulated DC voltages (e.g., +5V, +/-15V, +24V) from a primary input source (often 125V DC) for the logic boards in the same rack.

  • Oscillator/Clock: Provides the precise system clock or timing signals required for synchronized operation of the triple-redundant (TMR) control processors.

  • Supervisory Control: May include watchdog timers, reset circuitry, and synchronization logic for the <P> and <S> processors within the TMR architecture.

• Input Voltage: Typically designed for a 125 V DC input from the turbine’s control power system.

• Output Voltages: Multiple isolated and regulated DC outputs for powering logic circuits, analog circuits, and I/O.

• Form Factor: A large, proprietary circuit board designed to install into a specific slot within the Mark Vle control rack assembly.

• Part Number Suffix: The BNC suffix indicates a specific revision level or factory configuration.

Advantages and Key Features

1. Integrated Critical Functions: The GE DS200DCFBG2BNC combines vital power conversion and system timing into one module, simplifying the rack architecture but also making it a single point of attention for maintenance.

2. High Reliability Design: Built to the exacting standards required for continuous-duty turbine control, it features robust components, conservative thermal design, and protection circuits to ensure longevity in a high-vibration, electrically noisy environment.

3. Essential for System Synchronization: Its oscillator function is crucial for the coordinated operation of the triple modular redundant (TMR) system. A failure here can cause processor mismatches and lead to a turbine trip or lockout.

4. Direct System Impact: As the source of clean logic power, the health of the GE DS200DCFBG2BNC directly affects the stability of every other logic and I/O module in its rack. Fluctuating or noisy power from this board is a common root cause of seemingly random system faults.

5. Proven Legacy Performance: This module is a proven component within thousands of installed GE turbines worldwide, with a well-understood failure mode and replacement procedure.

Application Case Studies

• Peaking Power Plant Gas Turbine: In a GE Frame 6B or 7EA gas turbine used for peak electricity generation, the GE DS200DCFBG2BNC module is the heartbeat of the Mark Vle control cabinet. It ensures that during rapid start commands, the control processors boot synchronously and have stable power to execute the complex start-up sequencing and protection algorithms.

• Industrial Cogeneration Facility: At a pulp and paper mill, a GE LM2500 or Frame 5 turbine drives a generator and provides process steam. The GE DS200DCFBG2BNC in its control system must operate flawlessly for years, as an unplanned turbine outage can halt the entire industrial process. Its failure would trigger an immediate shutdown.

• Mechanical Drive Turbine: In a natural gas compression station, a turbine drives a compressor. The GE DS200DCFBG2BNC ensures the control system maintains precise speed control and executes protective shutdowns within milliseconds in case of a surge or over-speed condition.

Comparison with Competing Products

Selection Suggestions and Important Notes

• Selection Suggestion:

  • The GE DS200DCFBG2BNC is not selected from a catalog for a new design; it is procured as a mandatory spare part for maintaining an existing GE Mark Vle turbine control system. It is a direct replacement component.

  • Facilities should keep at least one tested GE DS200DCFBG2BNC module in stock if it is not part of a fully redundant control rack configuration, due to its critical nature and potential to cause a turbine trip upon failure.

  • Selection is based solely on matching the exact part number from the original system’s documentation or the label on the failed unit.

• Important Notes:

  • Exact Part Number Match: The part number DS200DCFBG2BNC must match exactly. The suffix (BNC) is critical, as different revisions may have component or firmware differences that affect compatibility.

  • Handling and ESD: This is a sensitive electronic board. It must be handled with proper electrostatic discharge (ESD) precautions during storage, transport, and installation.

  • System Power-Down: Replacement of the GE DS200DCFBG2BNC typically requires a complete shutdown and power-down of the entire control rack it resides in, leading to a turbine outage. Planning and permitting (Lock-Out/Tag-Out) are essential.

  • Testing After Replacement: Upon installing a new DS200DCFBG2BNC, it is crucial to verify all output voltages and system synchronization before returning the turbine to service. This often requires specific calibration procedures outlined in the GE manual.

  • Source from Reputable Suppliers: Due to the criticality and cost of the turbine, always source this module from authorized GE distributors or highly reputable surplus specialists who can provide testing certification.

ABB PM151 PLC
ABB BB150
ABB PM154 PLC
NAIO-02 DCS
ABB NCSA-01 DCS
ABB NTAC-01 PLC