Overview
Configured for proportional valve interface and field signal termination in GE Mark VI and Mark VIe control systems, the GE IS200TPROH1C (IS200TPRO Terminal Board) provides direct physical and electrical execution between external field wiring and associated control hardware. The board supports organized signal termination for turbine control, valve actuation, and protection-related circuits. The supplied documentation identifies the H1C version as a conformal-coated hardware revision.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS200TPROH1C |
| Brand | General Electric (GE) |
| Series | Mark VI / Mark VIe |
| Product Type | Proportional Valve Driver Terminal Boards |
| Board Type | TPRO Terminal Board |
| Core Function | Field signal termination and proportional valve interface |
| Application | Turbine control, valve actuation, and protection circuits |
| Compatibility | GE Mark VI / Mark VIe control platforms |
| Mounting | Standard Mark VI panel mounting |
| Interface | Field wiring connections and associated control hardware connectors |
| Hardware Revision | H1C |
| Protective Treatment | Conformal coating revision identified in supplied documentation |
GE Backplane and I/O Interface Considerations
The IS200TPROH1C operates as a terminal-level hardware interface rather than an independent processor or communication controller. It transfers field connections to associated Mark VI or Mark VIe control hardware through the designated board connectors and wiring paths.
Therefore, system compatibility depends on the installed control hardware, connector arrangement, and approved application configuration. Backplane bus communication and firmware compatibility are determined by the associated controller and I/O hardware, not by the terminal board alone. Correct cable routing and connector identification help maintain consistent signal paths during installation and maintenance.
Frequently Asked Questions
Q: Can the IS200TPROH1C operate as an independent control module?
A: No independent processing function is identified in the supplied documentation. The board performs field termination and interface functions with associated GE Mark VI or Mark VIe hardware.
Q: Does the IS200TPROH1C provide its own firmware upgrade function?
A: No firmware upgrade function is specified for this terminal board. Firmware compatibility should be verified at the associated controller or I/O module level.
Q: What does the H1C designation indicate?
A: The supplied documentation identifies H1C as the specific hardware revision and indicates conformal coating protection. Additional suffix interpretation should follow GE documentation for the installed system.
Field Installation Guidelines
- Verify the complete part number IS200TPROH1C before installation.
- Disconnect or isolate applicable system power according to site lockout and electrical safety procedures.
- Install the board using the designated Mark VI panel mounting arrangement.
- Match each field conductor to the approved terminal identification and wiring documentation.
- Route signal wiring separately from high-current power conductors where practical.
- Terminate cable shields according to the applicable GE system grounding design.
- Inspect ribbon cables, plug-in connectors, and terminal hardware for damage or contamination before energizing the system.
- Do not force connectors into position. Confirm connector orientation before applying mechanical pressure.
- Verify associated controller and I/O hardware compatibility before system commissioning.
- Perform signal continuity and functional checks according to the applicable Mark VI or Mark VIe maintenance procedure.

















