GE DS200FCGDH1ABA LCI CONTROL & GATING

الوصف

The GE DS200FCGDH1ABA is a specialized circuit board known as a Gate Distribution and Status Card (FCGD). It is a critical component of the legacy GE Speedtronic Mark V series of turbine control systems, which are used primarily in the power generation industry.

Key Features and Function

• LCI Control and Gating: The primary function of this board is to provide a crucial interface for an LCI (Load Commutated Inverter), which is a type of variable-frequency drive used for starting and controlling large synchronous motors, such as those that drive turbines. It handles the gating or “firing” signals for a 6-pulse, phase-controlled bridge.
• Signal Decoding and Distribution: The board receives firing information from a separate Digital Signal Processing Card (DSPC) over the system’s VME backplane. It then decodes and distributes these signals to control the firing of the Silicon Controlled Rectifiers (SCRs) in the bridge.
• Feedback and Diagnostics: In addition to distributing signals, the FCGD board also receives feedback from the bridge components. This includes multiplexed cell status signals and other bridge feedback like voltage, frequency, and current status. This information is then scaled and sent back to the DSPC for monitoring and diagnostics.
• Fiber Optic Connections: The board uses fiber-optic connections to communicate with the bridge, which provides electrical isolation and immunity to the high levels of electromagnetic interference (EMI) found in a power generation environment.
• Obsolete Status: As a component of the discontinued Mark V series, the DS200FCGDH1ABA is an obsolete part. It is no longer manufactured by GE and is typically sourced from new old stock, surplus vendors, or specialized repair and refurbishment companies.
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