I. Product Overview
The IS200ISBDG1AAA is a genuine GE Mark VI series turbine emergency trip terminal board, specifically designed for gas turbine control systems. It is responsible for driving the unit’s emergency shutdown and overspeed protection circuits. It works in conjunction with a TRPG board to control three trip solenoid valves and provides DC power to the positive side of the trip circuit. It features 12 built-in relays, employing a 3-out-of-2 voting logic for safe tripping. It is compatible with single/dual/triple redundant unit architectures. The H1B version, operating at 125VDC, is a mainstream, universal model and can be linked with the entire IS200 I/O board series, including PPRO and TSVO.
II. Functional Features
Triple trip solenoid valve drive, paired with TRPG board for power supply (TREG positive, TRPG negative), supporting up to 3 sets of shutdown actuators;
12 built-in relays, 9 of which form three sets of 2-out-of-3 voting circuits, eliminating single-point false tripping and ensuring unit safety;
Integrated overspeed protection and emergency shutdown logic, with the I/O controller centrally managing all tripping actions;
JX1/JY1/JZ1 three-way power diodes combined for redundant power supply, ensuring uninterrupted power supply to the feedback circuit and energy-saving relays;
Independent electrical isolation for the tripping circuit, avoiding protection malfunctions caused by power crosstalk;
Compatible with Simplex/dual/TMR triple redundancy systems, supporting high-speed network I/O communication;
Multi-layer PCB surface mount technology, detachable terminal blocks, seamless replacement of multiple hardware versions;
Industrial high-reliability design, components temperature resistant from 0~70℃, suitable for long-term continuous operation of power station control cabinets.
III. Applications and Operation
Application Scenarios
Power Industry: Combined cycle gas-fired power plants, cogeneration, steam turbine Mark VI control systems;
Oil and Gas Industry: Natural gas booster stations, oilfield self-contained generator sets, LNG plant power units;
Chemical and Heavy Industry: Emergency safety protection systems for self-contained gas turbines in oil refineries, fertilizer plants, and steel mills.
Standard Operation
After power failure, install the board into the Mark VI standard rack slot for secure mounting;
First terminal block wiring: 3-way trip solenoid valves, energy-saving resistors, emergency stop button;
Second terminal block connection to up to 7 trip interlock signals;
Dedicated cable with molded plug connects the J2 power interface to the PPRO control module;
For single-load systems, additional J1 cable is used to transmit trip signals to the TSVO board, driving the servo valve to lock;
After power-on, read the circuit status via ToolboxST to verify the 2/3 out of 3 protection logic.
IV. Design and Structure
Dimensions: 17.8cm × 33.02cm, Net weight: 2.00lbs, Made in the USA;
Multi-layer PCB + SMD components, onboard removable terminal blocks, neat wiring for easy maintenance;
Independent isolated trip power circuit, redundant diode combined power supply circuit;
Built-in 12 industrial relays, modularly arranged in three voting circuits;
Standard industrial connectors JX1/JY1/JZ1/J1/J2, compatible with original manufacturer’s complete cable kits;
Electrostatic sensitive components, require anti-static boxes for storage and transportation to avoid damage.
V. System Features
Exclusively compatible with the GE Mark VI Speedtronic control system, running the QNX operating system;
Power supply specifications:Main circuit 200–250VAC, bus voltage 70–145VDC, standard 125VDC operating condition;
Hardware compatible with all PPRO, TRPG, and TSVO IS200 series cards, direct cable connection without adapters;
Supports single/dual/triple redundancy architecture, high-speed network I/O for real-time transmission of trip fault signals;
Includes official manual GEH-6421, fully covering configuration, wiring, and troubleshooting;
In stock, brand new original with a 12-month warranty, directly replaces older TREG versions of cards.
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