GE Mark VI IS215VPROH2BC Turbine Protection VPRO Board

GE Mark VI IS215VPROH2BC Product Overview

The GE Mark VI IS215VPROH2BC acts as a dedicated turbine protection and emergency trip board. This specialized hardware executes critical emergency overspeed protection functions within the Mark VI Turbine Control System series. It serves as the primary input/output processor board interfacing directly with TPRO and TREG terminal boards.

Engineers deploy the IS215VPROH2BC board within a separate protection module to isolate emergency functions from core control systems. The design supports advanced wind, gas, and steam turbine automated drive assemblies. This architecture delivers a significant functional upgrade over legacy systems by embedding dedicated alternative energy control capabilities.

Global PLC Spare HUB's Insight

The GE Mark VI IS215VPROH2BC represents a critical component for high-availability industrial assets. Systems utilizing this board gain independent emergency shutdown capabilities that bypass standard control loops.

Its triple modular redundant architecture allows facilities to execute maintenance on single sections without shutting down the turbine. This capability minimizes expensive unscheduled downtime during critical power generation operations.

Technical Specifications

• Brand: General Electric (GE)
• Model: IS215VPROH2BC
• Series: Mark VI Turbine Control System
• Module Type: Turbine Emergency Trip Board / Protection Board
• Functional Acronym: VPRO
• Frame Rate: Up to 100 Hz
• MPU Pulse Rate Range: 2 Hz to 20 kHz
• MPU Input Circuit Sensitivity: Minimum 27 mV peak at 2 Hz
• MPU Pulse Rate Accuracy: High-precision percentage of actual reading
• Power Supply Rating: 125 VDC nominal input from the cabinet PDM
• On-Board Voltage Generation: Local regulation converting input to 5 VDC and 28 VDC
• Operating Temperature Range: 0 to 60 °C
• Solenoid Response Time: 0.1 second average response based on solenoid L/R time constant
• Trip Solenoids Quantity: Six per VPRO board or three per connected TREG board
• Solenoid Circuit Rating: Rated for NEMA Class E creepage levels
• Maximum Fuse Voltage Clearing: 15 A maximum rating
• Redundancy Options: Supports Simplex or Triple Modular Redundant (TMR) setups

Target Equipment Compatibility

• General Electric gas turbines featuring Mark VI control architectures
• Industrial steam turbines requiring independent overspeed protection modules
• Utility-scale wind turbine automated drive assemblies
• TREG turbine emergency trip terminal interfaces
• TPRO turbine protection terminal components
• TSVO turbine servo valve output terminal boards

System Architecture and Hardware Connectivity

• The IS215VPROH2BC utilizes three completely independent hardware sections designated as X, Y, and Z.
• Operators can safely shut down one hardware section during active turbine operation for maintenance.
• The protection module connects directly to TPRO terminal boards via dedicated Ethernet cables for IONet communication.
• The TREG board manages twelve total relays to implement strict safety voting protocols.
• Nine TREG relays split into three distinct groups to control the three trip solenoids safely.
• The TREG terminal board provides the positive 125 VDC power side to the connected solenoids.
• The TRPG terminal board supplies the negative 125 VDC power side to ensure total electrical isolation.
• Simplex systems utilize a specific J1 cable connection running directly to the TSVO terminal board.
• The TSVO connection transmits a direct trip signal to initiate an immediate servo valve clamp function.

Installation Guide

• Verify the cabinet power distribution module is completely de-energized before inserting the board.
• Mount the IS215VPROH2BC securely into its designated slot within the independent protection module rack.
• Connect the J2 power cable directly from the cabinet PDM to ensure proper voltage delivery.
• Attach the required Ethernet cabling to the onboard port to establish local IONet communications.
• Route the wiring from the TREG and TPRO terminal boards to the specified hardware channels.
• Ensure proper grounding protocols match the original standard General Electric Mark VI engineering guidelines.

Diagnostics and Maintenance Capabilities

• Onboard diagnostics detect state mismatches between the K25A synchronism check relay driver and its requested state.
• The system flags current path interruptions between the VPRO board and the TREx terminal board immediately.
• Diagnostic logic monitors K25A relay coil health to prevent synchronization failures before they occur.
• The board continuously supervises cabling continuity to the P28V power source located on the TTUR board.
• Internal monitoring circuits validate the integrity of all local 5 VDC and 28 VDC power rails.

Procurement and Selection Guidance

• Confirm your specific hardware revision layer because the IS215VPROH2BC features dual B and C revisions.
• Evaluate whether your application requires a Simplex layout or a Triple Modular Redundant system setup.
• Verify your existing terminal board models match the TPRO, TREG, TRPG, or TSVO requirements.
• Source authentic components to ensure complete software compatibility with existing Mark VI control core configurations.

Commercial Shipping and Warranty Terms

• Product Availability: In Stock
• Warranty Coverage: 12-Month Comprehensive Warranty
• Shipping Standard: Dispatched within 24 to 48 hours from order confirmation
• Available Express Carriers: FedEx, UPS, DHL

Frequently Asked Questions

What primary function does the VPRO board perform in the system?

The board provides completely independent emergency overspeed protection and executes emergency turbine shutdown commands.

How does the triple redundant voting system operate on this hardware?

The board uses three isolated sections that work with TREG relays to execute a two-out-of-three safety vote.

Can I replace a single section of the board while the turbine runs?

Yes, the TMR design allows maintenance on one section without compromising active turbine protection.

What does a K25A relay driver mismatch diagnostic message indicate?

This message indicates a broken current path, a wiring fault, or a faulty relay driver between boards.

What happens if the cabling to the P28V source on the TTUR board fails?

The system flags a coil trouble diagnostic because the K25A relay loses its required synchronization check power.

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