I. Basic Information

II. Hardware Structure

1. High-performance industrial processor with 16MB DRAM and large-capacity Flash storage, maximum 100Hz high-speed sampling, trip response time ≤0.1s to realize rapid safety protection.
2. Dual VME bus backplane interface, supporting TMR triple redundant X/Y/Z three-board voting architecture to eliminate single-point failure risk and meet SIL3 safety level requirements.
3. Dual redundant IONET industrial Ethernet ports for inter-board data interaction, parameter downloading and fault alarm information uploading.
4. Isolated 125VDC to 5V/28VDC DC-DC power conversion circuit, equipped with reverse connection, overvoltage and overcurrent multi-level hardware protection.
5. On-board LED status indicators for power supply, communication, hardware fault and protection action, supporting rapid on-site troubleshooting.
6. Extended interface matched with TREG/TPRO terminal boards, which can collect speed, temperature, interlock switching signals and drive multiple trip solenoids.

III. Technical Specifications

1. Electrical Parameters

• Rated Input Voltage: DC 125V (100～140VDC allowable fluctuation)
• On-board Output: 5VDC (main control), 28VDC (signal wetting)
• Typical Power Consumption: ≤15W
• Speed Signal Sensitivity: Min 27mV peak @ 2Hz
• Maximum Trip Solenoid Drives: 3 channels per board
• Sampling Cycle: Up to 100Hz
• Communication: Dual IONET Ethernet + VME backplane bus
• Redundancy Mode: Simplex / TMR triple modular redundancy

2. Environmental Parameters

• Operating Temperature: 0℃～+60℃ (derating required above 1000m altitude)
• Storage Temperature: -40℃～+85℃
• Humidity: 5%～95%RH, non-condensing, no corrosive gas

3. Mechanical Parameters

• Mounting: Standard VME rack installation, occupying 2 slots
• Heat Dissipation: Aluminum integrated radiator
• Grounding: Independent star grounding terminal

IV. Core Features

1. TMR triple redundant 2-out-of-3 voting design ensures protection reliability, avoiding mis-trip or protection refusal caused by single hardware failure, complying with SIL3 safety specification.
2. Independent ETS and overspeed protection logic operates separately from the main controller, realizing safe shutdown even under main control system crash and communication interruption.
3. Comprehensive on-board self-diagnosis and fault event recording function supports historical accident data traceability and equipment failure analysis.
4. Full compatibility with Mark VI series hardware and software, convenient for spare part replacement, cabinet expansion and safety renovation.
5. Industrial wide-temperature and EMC anti-interference design adapts to harsh working conditions such as high temperature, dust and strong electromagnetic interference in power plant control rooms.

V. Application Scenarios

1. ETS emergency trip and overspeed safety protection system for gas/steam turbine units in thermal power and combined cycle power plants.
2. Safety control of gas-driven compressor units in petrochemical and offshore platform industries.
3. Equipment maintenance, spare part replacement and safety upgrading of old GE Mark VI turbine control systems.
4. Safety loop expansion and redundant architecture optimization of industrial large drag turbine control cabinets.