GE IS200ISBEH1A ISBus Extender Board

GE IS200ISBEH1A ISBus Extender Board

The IS200ISBEH1A is vital for creating physically dispersed control systems, especially in Triple Modular Redundant (TMR) configurations.

  • ISBus Extension: It provides an interface to increase the physical length or branching capabilities of the ISBus cable. The ISBus is the critical link that ensures real-time synchronization (InSync) between control modules (R, S, T).

  • Signal Conditioning and Re-timing: As an active extender, the board contains circuitry to recondition, buffer, and re-time the high-speed ISBus signal. This is essential to counteract signal degradation (attenuation, dispersion) that occurs over distance, ensuring the signal maintains its integrity and precise timing for the system’s voting and fault-tolerant logic.

  • Fiber-Optic Conversion: The board is equipped with fiber-optic connectors (typically ST-type connectors) to convert the electrical ISBus signal into an optical signal. This conversion allows for:

    • Long-Distance Transmission: Significantly extending the range of the ISBus (up to 2 kilometers or more, depending on fiber type and data speed) between racks or cabinets.

    • Noise Immunity: Providing robust immunity to Electromagnetic Interference (EMI) and electrical noise, which is common in power control environments.

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الوصف

The GE IS200ISBEH1A is an ISBus Extender Board (ISBE) manufactured by General Electric for use in the Mark VI Speedtronic Turbine Control System and the EX2100 Excitation System.

Its primary role is to extend the communication reach and maintain the integrity of the proprietary ISBus high-speed, synchronous communication path.

⚙️ Core Function and System Role

The IS200ISBEH1A is vital for creating physically dispersed control systems, especially in Triple Modular Redundant (TMR) configurations.

  • ISBus Extension: It provides an interface to increase the physical length or branching capabilities of the ISBus cable. The ISBus is the critical link that ensures real-time synchronization (InSync) between control modules (R, S, T).

  • Signal Conditioning and Re-timing: As an active extender, the board contains circuitry to recondition, buffer, and re-time the high-speed ISBus signal. This is essential to counteract signal degradation (attenuation, dispersion) that occurs over distance, ensuring the signal maintains its integrity and precise timing for the system’s voting and fault-tolerant logic.

  • Fiber-Optic Conversion: The board is equipped with fiber-optic connectors (typically ST-type connectors) to convert the electrical ISBus signal into an optical signal. This conversion allows for:

    • Long-Distance Transmission: Significantly extending the range of the ISBus (up to 2 kilometers or more, depending on fiber type and data speed) between racks or cabinets.

    • Noise Immunity: Providing robust immunity to Electromagnetic Interference (EMI) and electrical noise, which is common in power control environments.

🔎 Technical Details and Connectivity

  • Product Type: ISBus Extender Board.

  • System Series: Compatible with Mark VI Speedtronic and EX2100 Excitation System.

  • Nomenclature: The H1A suffix indicates the initial hardware group and artwork revision.

  • System Interface: It connects to the J11A interface on the CAPB Control Assembly Backplane board and may also mate with the J12A interface in the Mark VI rack.

  • Indicators: The board includes LED indicators (DS1, DS2, DS3, DS4) for visual diagnostics of the communication status.

  • Connectors: It typically features small terminal strips, two plug connectors, and two fiber-optic connectors for the input and output ISBus paths.

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