The GE IS215VPROH2BD is a Mark VI Speedtronic turbine protection assembly board designed to provide independent emergency overspeed protection and safety shutdown logic for gas and steam turbine systems. It operates as part of GE’s VPRO protection architecture, working alongside TPRO and TREG terminal boards to ensure rapid, fail-safe turbine trip execution.
Built with a triple-redundant design philosophy, this module is engineered for maximum operational safety. It continuously evaluates turbine speed and system health, and initiates emergency shutdown commands when predefined thresholds are exceeded—independent of the main turbine control system.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | General Electric (GE) |
| Model | IS215VPROH2BD |
| Series | Mark VI Speedtronic |
| Module Type | Turbine Protection / VPRO Assembly Board |
| Function | Emergency overspeed & turbine protection |
| Redundancy Architecture | Triple redundant VPRO configuration |
| Processing Frame Rate | Up to 100 Hz |
| MPU Input Range | 2 Hz – 20 kHz |
| Speed Measurement Accuracy | ~0.05% of reading |
| Power Input | 125 VDC (70–145 VDC range) |
| Output Voltages | 5 VDC / 28 VDC |
| Relay Control | Up to 12 relays via TREG interface |
| Trip Capability | Up to 3 trip solenoids |
| Communication | IONet / Ethernet interface |
| Cable Distance Support | Up to 300 meters (shielded MPU cables) |
| Operating Temperature | Industrial-grade (approx. 0°C to 60°C) |
| Dimensions | ~160 × 160 × 120 mm |
| Weight | ~0.8 kg |
The module is designed for high-speed protective decision-making and integrates tightly with GE turbine safety logic systems.
System Role & Functional Behavior
The IS215VPROH2BD functions as the core protection decision unit in the Mark VI safety chain:
- Monitors turbine speed via passive or active pulse inputs
- Executes real-time overspeed and fault detection logic
- Coordinates emergency trip signals with redundant VPRO boards
- Drives TREG/TRPG terminal boards for solenoid actuation
- Provides independent emergency stop functionality
Its architecture ensures that even if the main turbine controller fails, the protection system remains fully operational and capable of executing a safe shutdown.
Recommended Related Modules
For full Mark VI turbine protection architecture, the IS215VPROH2BD is typically paired with:
- IS215TREGH1B Turbine Emergency Trip Terminal Board
- IS215TPROH1B Protection Input Terminal Board
- IS200VAICH1C Analog Input Module
- IS200TVIBH2B Vibration Monitoring Board
- IS215UCVEM06A Control Processor Module
These modules together form a complete sensing–logic–actuation safety loop.
Common GE Mark VI System Modules
In similar industrial turbine systems, engineers also deploy:
- IS200TRLYH1B Relay Output Board
- IS200TSVOH1B Servo Terminal Board
- IS200TTURH1B Turbine Protection Board
- IS200TBCIH1C Discrete Input Board
- IS220PDIOH1A Distributed I/O Pack
Each contributes to layered control, diagnostics, and actuator management.
