Description
The GE IS200TREAH2AED is a specialized Emergency Trip Terminal Board (TREA) designed for the Mark VIe Speedtronic Control System. It serves as the primary hardware interface for the emergency protection system, managing the critical signals required to trip a turbine safely in the event of an overspeed or emergency condition.
Product Parameters (Datasheet)
- Model Number: IS200TREAH2AED
- System Series: Mark VIe / Mark VIeS
- Board Type: Emergency Trip Terminal Board (TREA)
- Redundancy: Supports TMR (Triple Modular Redundant) and Simplex configurations
- Relay Outputs: Integrated high-reliability trip relays
- Interface Connectors: High-density connectors for cabling to the TREG or PTUR/VPTR boards
- Protection Features: Hardware-based overspeed protection and emergency stop (E-Stop) logic
- Environmental Rating: Conformal coating for industrial contaminants
- Revision: H2A (indicates specific hardware grouping and layout)
GE IS200TREAH2AED
GE IS200TREAH2AED
GE IS200TREAH2AED
Application Fields
This terminal board is a cornerstone of the safety-instrumented functions in power generation:
- Gas Turbine Protection: Managing the fuel-trip solenoid valves for rapid flame extinction.
- Steam Turbine Control: Interfacing with the main steam stop valves and intercept valves.
- Overspeed Protection: Acting on signals from magnetic pickups (MPUs) to prevent catastrophic mechanical failure.
- Generator Management: Coordinating with the generator breaker trip circuits during an electrical fault.
Product Usage & Installation
- Chassis Mounting: The TREA board typically mounts in the turbine control cabinet on a DIN rail or dedicated standoff assembly.
- TMR Connectivity: In a TMR system, the TREA is connected to three separate I/O packs (typically PTUR or VPTR). This allows the system to perform “2-out-of-3” voting on trip signals to prevent a single component failure from causing a nuisance trip.
- Field Wiring: Field wires for the Emergency Stop pushbuttons and trip solenoids are landed directly on the TREA’s screw terminals.
- Relay Logic: Ensure that the internal jumpers or DIP switches (if applicable for your revision) are set to match the solenoid voltage requirements (e.g., 24V DC, 125V DC, or 115V AC).
- Testing: Perform a “Trip Test” during commissioning to ensure the relays actuate correctly and the feedback signals are received by the Mark VIe controller.
Product Technical Description
Technically, the IS200TREAH2AED provides the mechanical and electrical landing for the trip solenoid interface. It works in conjunction with the TREG (Turbine Emergency Trip Board) to provide a dual-layer safety system. While the controller manages the logic, the TREA provides the “hard-wired” physical path for the emergency signals. The board is designed to handle high in-rush currents typical of large solenoid valves. The AED suffix indicates a specific revision level that may include updated surface-mount components or improved noise filtration circuits compared to earlier versions.
Q&A (Common Questions)
Q: Can this board be used in a Mark VI (non-e) system? A: No. While the Mark VI and Mark VIe share some similarities, the TREA board is specifically designed for the Mark VIe’s distributed I/O architecture and cable interfaces.
Q: What does the “2-out-of-3” voting mean in this context? A: It means the TREA board receives trip commands from three independent processors. The physical relays on the board are arranged such that at least two processors must agree to trip before the solenoid is de-energized, preventing a single faulty processor from stopping the turbine.
Q: Is the TREA board hot-swappable? A: No. Because this board carries the primary trip signals for the turbine, it should only be replaced when the turbine is in a “Safe State” or completely shut down to avoid an accidental trip.
Q: Why does my board have an “AED” revision? A: The “AED” code refers to GE’s manufacturing and engineering revision history. It ensures that the board contains specific hardware improvements and is compatible with certain versions of the Mark VIe ControlST software.
Similar Model Recommendations
- GE IS200TREGH1B: The primary Turbine Emergency Trip Terminal Board.
- GE IS200TRPAH1A: Process Alarm Terminal Board.
- GE IS200PTURH1B: The I/O pack that typically controls the TREA board.
- GE IS200TRLYH1B: General Relay Output Terminal Board.
- GE IS200TTURH1B: Primary Turbine I/O Terminal Board.
For technical datasheets or to check current stock for the GE IS200TREAH2AED, please contact our turbine control support team.
