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IS200TBCIH1CBC — GE Speedtronic Mark VI Contact Input Terminal Board
The IS200TBCIH1CBC is a terminal board from GE's Speedtronic Mark VI turbine control system, belonging to the IS200 board family. It is a TBCI-type module — a rack-mounted terminal board associated with contact (digital) input signal handling within the turbine control cabinet.
The Mark VI platform is one of GE's turbine control systems, used to govern gas and steam turbines in power generation and industrial drive applications. In the Mark VI/VIe architecture, IS200 terminal boards provide the physical connection point for field cabling and interface the control system's input/output signals, typically pairing with an associated I/O pack. The IS200TBCIH1CBC carries the "H1" board designation, a "C" level, and a "BC" revision suffix. The "CI" component of the designation is associated with contact input signal handling — the discrete on/off signals used for status indication, switch positions, and protection interlocks in turbine control.
Key Specifications
| Manufacturer | General Electric (GE) |
| Model / Part Number | IS200TBCIH1CBC |
| Product Line | Speedtronic Mark VI / Mark VIe |
| Product Type | TBCI Board / Contact Input Terminal Board |
| Board Family | IS200 series |
| Designation / Revision | H1 board, "C" level, "BC" revision suffix |
| Signal Type | Contact (digital) input signals (per the "CI" designation) |
| Form Factor | Rack-mounted terminal board within the control cabinet |
| Function | Contact input signal termination and interfacing within the Mark VI/VIe system |
| Status | Legacy — available through GE and industrial spare-parts channels |
Important: Channel count, contact input voltage/current ratings, dimensions, and connector details for the IS200TBCIH1CBC are not consistently documented across public sources. Please confirm these against the board label, GE documentation, or your system manual before ordering, and verify the correct paired I/O pack where applicable.
Product Functions
- Contact input termination: Provides the field-wiring termination point for contact (discrete) input signals connected to the turbine control system.
- Discrete signal interfacing: Routes on/off status signals from field devices into the Mark VI/VIe system for processing and monitoring.
- I/O pack support: Where applicable, mates with the corresponding I/O pack to provide channel-level contact input for the control system.
- Signal integrity: Supports reliable detection of switch positions, status contacts, and interlocks by providing a clean, dedicated signal path.
- System integration: Operates as part of the modular IS200 board set, coordinating with other boards and I/O packs within the cabinet.
- Rack-mounted modular design: Slots into the control cabinet rack, allowing board-level replacement during maintenance without full system rewiring.
- System lifecycle support: Keeps existing Mark VI/VIe installations operational, supporting spares strategies for ageing turbine control systems.
Application Scenarios
- Gas turbine control: Contact input signal termination within Mark VI/VIe cabinets for gas turbine monitoring, sequencing, and protection.
- Steam turbine control: Discrete input interfacing in steam turbine control applications.
- Status & interlock monitoring: Supports detection of switch positions, permissives, and protection interlocks used by the turbine control loop.
- Power generation plants: Keeps legacy Mark VI/VIe turbine controls serviceable in utilities managing long-life assets.
- Oil & gas facilities: Support for turbine-driven compressors and mechanical drive applications under Mark VI/VIe control.
- Maintenance & overhaul: Sourced as a spare during scheduled outages to minimise downtime and rewiring effort.
- Legacy system lifecycle support: Supports spares and phased modernization strategies for plants still running Mark VI/VIe controls.
Frequently Asked Questions
What is the IS200TBCIH1CBC?
It is a TBCI-type terminal board from GE's Speedtronic Mark VI / Mark VIe turbine control system (IS200 board family), associated with contact (discrete) input signal termination and mounted in the control cabinet rack.
What does the "CI" in the designation indicate?
The "CI" component is associated with contact input (discrete) signal handling — on/off status signals rather than analogue measurements. Always confirm the exact functional definition against GE documentation for your specific revision.
Which systems is it compatible with?
It is designed for GE Speedtronic Mark VI / Mark VIe turbine control systems. It is not intended for Mark I, II, or V platforms or other unrelated control systems. Confirm the "H1" designation and revision suffix match your system.
What technical details should I confirm before buying?
Channel count, contact input voltage/current ratings, dimensions, and connector configuration should be confirmed against the board label or GE documentation, along with the correct paired I/O pack where applicable.
Is it still available?
The Mark VI/VIe platform is a mature but active product. Boards in the IS200 series are generally available through GE and industrial spare-parts / repair specialists. Contact your supplier for current availability and lead time.
What should I verify before ordering a replacement?
Match the complete part number including the revision suffix, confirm the board designation corresponds to your cabinet position, verify the paired I/O pack where applicable, and check compatibility with your Mark VI/VIe firmware and system documentation. Providing a photo of the existing board to your supplier helps ensure a correct match.
