GE VPROH2B IS215VPROH2BC

Product Summary

The General Electric VPROH2B IS215VPROH2BC is a turbine protection and emergency trip module designed for the GE Mark VI series Speedtronic turbine control systems. This board—often referred to simply as a VPRO card—plays a crucial role in safeguarding gas and steam turbines by providing ultra‑fast fault detection, overspeed protection, and emergency stop functionality.

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Core Function & Role

Rather than acting as a general PLC or I/O card, the IS215VPROH2BC module is specifically engineered as a turbine protection processor unit. It performs critical safety‑oriented functions such as:

• Emergency Overspeed Protection (EOS) — rapidly detects excessive turbine speed and initiates trip actions.

• Emergency Stop Control — executes immediate shutdown of turbine machinery in hazardous conditions.

• Support for Backup Sync Check Protection — aids in preventing damage due to synchronization errors.

• Triple Modular Redundancy (TMR) Architecture — allows three separate VPRO boards to operate in concurrency, improving reliability and reducing the risk of false trips or protection failure.

This module is crucial within turbine protection modules, working alongside terminal boards such as TPRO and TREG to monitor field sensors and drive protective relays.

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Technical Specifications

Parameter	Specification
Model Number	IS215VPROH2BC (Functional code: VPROH2B)
Product Type	Turbine Protection / Emergency Trip Board
Series	GE Mark VI Speedtronic
Primary Function	Emergency Overspeed, Emergency Stop, Protection Logic
Power Supply	125 V DC typical
Redundancy	Simplex or Triple Modular Redundancy (TMR)
Frame Rate / Processing	Up to ~100 Hz processing
Trip Solenoid Control	Up to 6 solenoids (via TREG boards)
Analog Inputs	Multiple current/voltage inputs for turbine sensors
Thermocouple Inputs	Up to 9 channels for temperature monitoring
Operating Temp Range	Industrial grade (varies by installation)
Mounting	VME rack module / Mark VI chassis
Weight & Size	Standard GE board form factor

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Design & Component Structure

The IS215VPROH2BC is built as a rugged, industrial printed circuit board designed to operate within a VME‑based protection module:

• High‑performance processing and safety logic circuits

• Multiple analog and thermocouple signal interfaces

• Dedicated logic for emitter detection and trip control

• Onboard power regulation for internal 5 V and 28 V systems

• Indicator LEDs and status diagnostics on front panel for real‑time monitoring

• VME edge connector for secure integration into Mark VI rack systems

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Typical Industrial Applications

This board is exclusively used in industrial turbine control and protection systems, including:

• Gas turbine protection and trip systems

• Steam turbine emergency shutdown systems

• Critical power generation platforms and utilities

• Large industrial facilities with rotating machinery requiring overspeed protection

• Redundant safety and protection logic configurations within GE Mark VI control architecture

System Advantages

• Ultra‑fast response against overspeed and safety faults

• High redundancy and fault tolerance (TMR support)

• Seamless integration with Mark VI turbine control architectures

• Wide sensor input support (analog + thermocouple)

• Built‑in diagnostics and protective logic for proactive maintenance

These features collectively ensure enhanced turbine protection and operational safety in high‑risk industrial environments.

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Conclusion

The GE VPROH2B IS215VPROH2BC Turbine Protection & Emergency Trip Board is a critical industrial module engineered for mission‑critical safety applications in GE Mark VI turbine control systems. Its dedicated emergency protection functionality, combined with redundancy and rapid response capability, makes it a cornerstone component for maintaining turbine operational integrity and protecting both equipment and personnel in high‑speed power generation environments.