Description

The GE IS215VPROH2BC is a critical Turbine Emergency Trip Board designed for the General Electric Mark VI and Mark VIe Speedtronic turbine control systems. This VME-based protection assembly functions as an independent safety layer, providing essential emergency overspeed protection (EOS) and emergency stop functionality for gas, steam, and wind turbines. It operates as a high-speed processor to ensure turbine integrity by monitoring speed signals and executing trip commands.

Features

• Triple Redundant Architecture: Supports Triple Modular Redundancy (TMR) with independent X, Y, and Z sections for hardware voting and fault tolerance.
• Comprehensive Protection: Provides emergency overspeed detection, emergency stop processing, and backup synchronization checking.
• Integrated Diagnostics: Continuously monitors relay status, power supplies, terminal board identification, solenoid circuits, thermocouple inputs, and analog signals.
• Onboard Power Conversion: Accepts 125 VDC input and internally generates 5 VDC and 28 VDC for electronics and solenoid drivers.
• High-Speed Processing: Operates at a frame rate of up to 100 Hz with rapid solenoid response times.

Applications

• Power Generation: Prevents catastrophic turbine failure in combined-cycle plants and utility grids.
• Oil & Gas: Protects large compressors and pumps driven by industrial gas turbines.
• Turbine Safety: Acts as a dedicated safety layer for emergency shutdown (ESD) and overspeed protection.

Technical Specifications

Installation Guidelines

• ESD Precautions: Always use a grounded wrist strap when handling the board to prevent electrostatic discharge damage to sensitive components.
• Power Down: Ensure the 125 VDC power source is disconnected from the PDM before inserting or removing the module from the VME rack.
• Wiring: Connect the 125 VDC power input to the J7 connector. Use 40-pin ribbon cables for connections to TPRO/TREG terminal boards via front-panel latching connectors (J3-J6).
• Environment: Ensure the cabinet provides adequate ventilation to maintain operating temperatures between 0 degC and 50 degC.
• Grounding: Verify that the VME rack is properly grounded to the cabinet chassis to minimize EMI and ensure signal integrity.

FAQ

What is the primary function of the IS215VPROH2BC?

It acts as the primary Emergency Overspeed (EOS) protection for industrial turbines, monitoring speed and tripping solenoids if dangerous conditions are detected.

Does the board support TMR operation?

Yes, it supports Triple Modular Redundancy (TMR) architecture, where three independent processors perform hardware voting to improve system availability.

Can this board support a second TREG terminal board?

No, the H2B variant is designed as a lower-power version that does not support a second TREG terminal board.