How does the module connect to the control system?

It connects via dual RJ45 Ethernet ports for communication with the I/O network and a DC-37 pin connector to interface with the discrete input terminal board. A 3-pin power connector supplies its operating voltage.

What type of inputs does the module support?

It handles isolated discrete input signals with voltage sensing capability. It is ideal for detecting on/off status from field contacts, push buttons, relays, etc.

Are there any built-in diagnostic features?

Yes, the module includes LED indicators for visual diagnostics and an infrared port for local diagnostic serial communication, aiding in quick troubleshooting and status checks.

IS200TRESH1ABB - Turbine Emergency Trip Terminal Board

SPECIFICATIONS

Part Number: IS200TRESH1ABB
Manufacturer: General Electric
Country of Manufacture: United States (USA)
Number of trip solenoids: Three solenoids
Trip interlock isolation: Optical isolation to 1500 V on all inputs
Trip interlock filter: Hardware filter, 4 ms
Trip interlock ac voltage rejection: 60 V rms
Size: 17.8 cm wide x 33.02 cm high
Series: Mark VIe
Function: Turbine Emergency Trip Terminal Board

Functional Description

IS200TRESH1ABB is a Turbine Emergency Trip Terminal Board developed by GE. It is part of the GE Speedtronic Mark VIe gas turbine control system. The TRES terminal board works in conjunction with the VPRO (Protection Module) to provide fast-acting emergency shutdown functionality. It delivers power to three emergency trip solenoids, ensuring rapid and reliable actuation in the event of a critical fault condition such as overspeed.

Features

Power Distribution: Supplies the positive (+125 VDC) power side to up to three emergency trip solenoids. The TRPS terminal board provides the negative return, completing the circuit for reliable operation.
Relay Control via VPRO: The VPRO protection module controls three onboard relays that drive the connected trip solenoids. Enables instantaneous turbine shutdown when a protection event is triggered.
System Compatibility: Fully compatible with both Simplex and Triple Modular Redundancy (TMR) system configurations. In TMR systems, three TRES boards operate in parallel under independent control for redundant trip assurance.
Dry Contact Inputs: Includes seven dry contact inputs for monitoring trip interlock conditions. These inputs are excited, monitored, and fanned out to the protection module for condition analysis and response coordination.
Integrated Relay Drivers
- K25A – Synch Check Relay Driver: Ensures the turbine connects to the electrical grid only when synchronization parameters are within safe limits.
- K4CL – Servo Clamp Relay Driver: Controls the servo clamp circuit to maintain safe actuator positioning during fault or shutdown events.
Simplified Design: The absence of economizing circuits reduces complexity and enhances reliability. Emergency stop functions are managed separately, typically through the VPRO module or dedicated E-stop circuits. Each protection module supports only one TRES board, preventing cross-coupling and ensuring clear trip command paths.

Installation Guidelines

Terminal Block Wiring

Trip Solenoids: The three emergency trip solenoids are connected to the first I/O terminal block on the TRES board. These solenoids are energized by the board under normal operation and are de-energized during a trip event, thereby triggering a mechanical shutdown of the turbine.
Trip Interlocks: Up to seven dry contact trip interlocks can be connected to the second terminal block. These inputs monitor critical safety conditions such as high bearing temperature, low oil pressure, and other system alarms. If any of these interlocks are triggered (opened or closed based on configuration), they will initiate an emergency trip through the VPRO protection module.

Connector Interfaces

Connector J2: This connector is used to carry three power buses from the TRPS terminal board to the TRES. These buses provide the necessary power for energizing the trip solenoids and operating the internal relay circuits of the TRES board.
Connector JH1: This connector supplies the excitation voltage required for the seven dry contact trip interlocks. The excitation ensures that the status of each interlock can be reliably detected and communicated to the VPRO protection module.

Installation Notes

Always follow GE’s recommended wiring practices, including grounding and shielding, to avoid electrical noise or faults.
Ensure the 125 V DC supply is stable and within tolerance for reliable solenoid actuation.
Do not attempt to connect multiple TRES boards to a single protection module; the system does not support this configuration.
Perform continuity and insulation checks on wiring before energizing the system.

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FREQUENTLY ASKED QUESTIONS

What is IS200TRESH1ABB?
It is a Turbine Emergency Trip Terminal Board and is part of the GE Speedtronic Mark VIe gas turbine control system.

Which module controls the TRES board?
The TRES board is controlled by the VPRO protection module, which manages emergency overspeed protection, emergency stop signals, and operation of the trip solenoid relays on the board.

How many trip solenoids can the board support?
The board supports three trip solenoids, which are connected to the first I/O terminal block. These solenoids are energized under normal operation and de-energized to initiate a trip.

How are the trip interlocks connected?
Up to seven dry contact trip interlocks can be wired to the second terminal block. These inputs are monitored by the system to detect critical conditions that require an emergency shutdown.