Description
The GE IS200ISBEH2ABC is an InSync Bus Extender Card designed for the GE Mark VI turbine control system. It is associated with the ISBus high-speed synchronous communication architecture and provides the electrical/optical interface needed to extend the InSync bus between system components.
The board includes fiber-optic interfaces, electrical connectors, status LEDs, a DC/DC converter, and an interlock-bypass jumper. The exact hardware configuration should be matched with the existing Mark VI system before replacement.
🔧 Key Features
- GE Mark VI Speedtronic PCB
- InSync Bus Extender Card
- ISBus high-speed communication interface
- Fiber-optic communication interfaces
- Electrical bus connections
- Built-in status indication
- 18–36 VDC input to onboard DC/DC converter
- 5 VDC / 1 A converter output
- Three-position interlock-bypass jumper
- Conformal-coated PCB
- Designed for turbine control applications
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | GE General Electric |
| Model | IS200ISBEH2ABC |
| Product Type | InSync Bus Extender Card |
| Series | Mark VI Speedtronic |
| Functional Acronym | ISBE |
| Main Function | ISBus / InSync bus extension |
| Communication Interface | Electrical + fiber-optic |
| Fiber Connectors | 2 |
| Electrical Plug Connectors | 2 |
| Terminal Strips | 2 × 2-position |
| DC/DC Input | 18–36 VDC |
| DC/DC Output | 5 VDC, 1 A |
| Status LEDs | 3 |
| Jumper | 3-position interlock bypass |
| PCB Coating | Conformal coating |
| Hardware Revision | H2 / A-B-C revision configuration |
| Application | GE Mark VI Turbine Control |
| Mounting | Mark VI system assembly |
| Country of Origin | USA* |
The board-specific hardware information, including the two fiber-optic connectors, two electrical plug connectors, 18–36 VDC converter input, 5 V/1 A output, three LEDs, and three-position jumper, is documented by technical inspection/reference sources.
⚡ Functional Description
The IS200ISBEH2ABC provides a communication extension function within the GE Mark VI InSync/ISBus architecture. The fiber-optic interfaces allow communication signals to be transferred optically, while the electrical interfaces connect the board with the associated Mark VI hardware.
The board also contains an onboard DC/DC converter and local status indication. Its three-position jumper is identified as an interlock bypass; the PCB labeling indicates the normal and bypass positions.
🏭 Typical Applications
- GE Mark VI turbine control systems
- Gas turbine control
- Steam turbine control
- ISBus communication networks
- InSync synchronous control systems
- Turbine excitation/control cabinets
- Industrial turbine maintenance and retrofit projects
🔌 Installation & Configuration
- Verify IS200ISBEH2ABC on the board label.
- Confirm the Mark VI cabinet and system configuration.
- Record all fiber and electrical connections before removal.
- Check the fiber-optic connector type and routing.
- Verify the DC supply before energizing the replacement.
- Install the board in the correct system position.
- Reconnect electrical and fiber interfaces.
- Confirm jumper position against the approved system drawings.
- Power up and inspect the status LEDs.
- Verify ISBus/InSync communication before returning the turbine to operation.
🛠️ Commissioning Checklist
- Confirm PCB part number
- Verify hardware revision
- Inspect connectors and fiber ports
- Check DC input
- Verify onboard power
- Check LED status
- Confirm interlock-jumper position
- Verify ISBus communication
- Check associated Mark VI diagnostics
- Perform system-level functional testing
⚠️ Replacement Note
There are conflicting descriptions for this part number on secondary websites. The more specific board reference identifies IS200ISBEH2ABC as an InSync Bus Extender Card, while some listings incorrectly describe it as a generic I/O, discrete-output, or communication module.
For purchasing and replacement, use the complete identifier IS200ISBEH2ABC rather than only IS200ISBEH2A. The final ABC revision designation is important when matching the existing hardware.
📦 Ordering Information
GE IS200ISBEH2ABC | Mark VI | InSync Bus Extender Card | ISBus Interface | GE Speedtronic Turbine Control PCB
