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IS200SPIDG1A — GE Speedtronic Mark VIe SPID Terminal Board
The IS200SPIDG1A is a terminal board from GE's Speedtronic Mark VIe turbine control system, belonging to the IS200 board family. It is an SPID-type module — a rack-mounted termination board that mates with IS220-series I/O packs, providing the field-wiring termination and electronic module identification for the pack it carriers.
In the Mark VIe architecture, control and communication functions are carried out by IS220 I/O packs, which plug onto IS200 terminal boards. GE documentation lists the IS200SPIDG1A in combination with the IS220PPRFH1B PROFIBUS gateway pack and the IS220PCNOH1B pack. The terminal board supplies the physical connection point for field cabling, hosts the pack's electronic ID (which allows the controller to recognise and diagnose the module), and passes signals between the I/O pack and the turbine control system. It carries the "G1" board designation and an "A" revision suffix.
Key Specifications
| Manufacturer | General Electric (GE) |
| Model / Part Number | IS200SPIDG1A |
| Product Line | Speedtronic Mark VIe |
| Product Type | SPID Board / I/O Pack Terminal Board |
| Board Family | IS200 series |
| Designation / Revision | G1 board, "A" revision suffix |
| Paired I/O Packs | IS220PPRFH1B (PROFIBUS gateway); IS220PCNOH1B (per GE documentation) |
| Input Voltage | 24–28.6 VDC (per GE documentation, as quoted for the paired I/O pack systems) |
| Input Current | 0.17–0.18 A max (per GE documentation) |
| Ambient Temperature | −20 °C to +55 °C (per GE documentation) |
| Form Factor | Rack-mounted terminal board within the control cabinet |
| Status | Legacy — available through GE and industrial spare-parts channels |
Important: The voltage, current, and temperature figures above are drawn from GE documentation describing the paired I/O pack systems, not from the terminal board's own standalone datasheet. Physical dimensions, weight, channel/termination count, and connector details are not consistently documented and should be confirmed against the board label, GE documentation, or your system manual before ordering.
Product Functions
- I/O pack mounting & termination: Provides the mounting and termination point for its paired IS220-series I/O pack, physically connecting the pack to the cabinet wiring.
- Field wiring interface: Serves as the connection point for field cabling, routing signals between the I/O pack and the plant instrumentation.
- Electronic module identification: Carries an electronic ID that allows the controller and I/O pack to automatically recognise and diagnose the module, simplifying commissioning and fault detection.
- Signal transfer: Passes signals between the I/O pack and the Mark VIe control system, supporting the pack's communication or control function.
- PROFIBUS gateway support: In combination with the IS220PPRFH1B pack, supports PROFIBUS communication gateway deployment within the control cabinet.
- Rack-mounted modular design: Slots into the control cabinet rack, allowing board- and pack-level replacement during maintenance without full system rewiring.
- System lifecycle support: Keeps existing Mark VIe installations operational, supporting spares strategies for ageing turbine control systems.
Application Scenarios
- Gas turbine control: Terminal board and I/O pack support within Mark VIe cabinets for gas turbine governor, sequencing, and protection systems.
- Steam turbine control: Signal termination and I/O interfacing in steam turbine control applications.
- PROFIBUS communication integration: Supports PROFIBUS gateway deployment (with the IS220PPRFH1B pack) for connecting turbine control systems to plant networks.
- Power generation plants: Keeps legacy Mark VIe turbine controls serviceable in utilities managing long-life assets.
- Oil & gas facilities: Support for turbine-driven compressors and mechanical drive applications under Mark 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 VIe controls.
Frequently Asked Questions
What is the IS200SPIDG1A?
It is an SPID-type terminal board from GE's Speedtronic Mark VIe turbine control system (IS200 board family). It mounts an IS220-series I/O pack, provides the field-wiring termination, and carries the module's electronic ID.
Which I/O packs does it work with?
GE documentation lists the IS200SPIDG1A in combination with the IS220PPRFH1B PROFIBUS gateway pack and the IS220PCNOH1B pack. Always confirm the pack pairing against your system documentation before ordering.
Is it a power supply, a speed module, or a gateway?
It is a terminal board. Some third-party listings describe it as a power supply, speed input module, or discrete input module — these descriptions are inconsistent and not supported by GE documentation. Its documented role is as a terminal board for IS220 I/O packs.
Which systems is it compatible with?
It is designed for GE Speedtronic Mark VIe turbine control systems. It is not intended for Mark I, II, or V platforms or other unrelated control systems. Confirm the "G1" designation and revision suffix match your system.
What technical details should I confirm before buying?
Termination/channel count, dimensions, weight, and connector configuration should be confirmed against the board label or GE documentation, alongside the correct I/O pack pairing. Details vary between revisions and are not consistently published, so verification ensures a correct match.
Is it still available?
The Mark VIe platform remains in active service. 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, and check compatibility with your Mark VIe firmware and system documentation. Providing a photo of the existing board to your supplier helps ensure a correct match.
