I/O modules

The GE IS200TREGH5B IS200TREGH5BDC Gas Turbine Emergency Trip Board provides failsafe protection for Mark VIe systems. This board monitors critical turbine parameters and initiates emergency shutdowns. You will find it in gas turbine and steam turbine safety applications. It uses redundant hardware comparators for SIL 3 certified protection. Therefore, this unit ensures personnel and equipment safety during fault conditions.

The GE IS200TREGH5B IS200TREGH5BDC Gas Turbine Emergency Trip Board measures 250 mm in height and 170 mm in width. Its depth reaches 45 mm for chassis mounting. The unit weighs approximately 0.85 kilograms. It contains one 32-bit processor and three independent trip comparators. Sixteen trip inputs accept 24 VDC signals from safety devices. Additionally, you get fourteen status LEDs for diagnostics.

Key Technical Specifications

Internal Architecture and Energy Storage

The GE IS200TREGH5B IS200TREGH5BDC Gas Turbine Emergency Trip Board stores moderate energy in its power filter. Electrolytic capacitors hold approximately 550 microfarads total capacitance. A 32-bit processor runs safety logic at 100 MHz with continuous self-testing. Three independent hardware comparators monitor overspeed conditions redundantly. Four thermocouple inputs provide exhaust temperature monitoring for over-temperature trips. Sixteen optocouplers isolate the trip inputs from the processor circuits. Six safety-rated relay outputs provide redundant shutdown contacts for fuel and stop valves. Fourteen LEDs show power, run, trip, and channel status clearly.

Connection Interfaces and Wiring Details

You will find two 50-pin ribbon cable headers on the board edge. Connect these headers to termination boards for field wiring. The GE IS200TREGH5B IS200TREGH5BDC Gas Turbine Emergency Trip Board also includes a 10-pin JTAG header. Use shielded twisted-pair cable for all overspeed sensor and thermocouple connections. Connect each magnetic pickup to its dedicated speed input channel. Connect thermocouple wires to the temperature input terminals. Fourteen LEDs indicate power, run, trip, and status conditions. A green PWR LED lights up when the board receives 5 VDC. A green RUN LED flashes when the processor executes logic normally. A red TRIP LED indicates an emergency shutdown condition has occurred.

Configuration and Installation Steps

You mount this board onto a metal chassis with six screws. First, drill six 5 mm holes matching the mounting pattern. Then, secure the board using M4 screws with lock washers. Connect the 5 VDC and 24 VDC power wires to the terminal blocks. The GE IS200TREGH5B IS200TREGH5BDC Gas Turbine Emergency Trip Board consumes 600 mA from the 5 VDC supply. Connect the ribbon cables to the termination boards for all signals. Use the Toolbox software to configure trip setpoints for overspeed and over-temperature. Set the voting logic (2-out-of-3) for overspeed tripping. Program the relay mapping for emergency shutdown valves. Configure the trip latch and reset behavior. Download the configuration to the board’s flash memory. Test each trip channel with a pulse generator and temperature simulator before turbine startup.

Details