GE IS200VTURH2BAC Turbine Controller Board — Mark VI Speedtronic VME Protection Card

Introduction

The GE IS200VTURH2BAC Turbine Controller Board stands as a cornerstone component within General Electric's renowned Mark VI Speedtronic turbine management platform. Engineered specifically for gas and steam turbine protection applications, this VME-based turbine protection card delivers mission-critical speed monitoring, flame detection, and emergency trip relay functionality that power generation facilities worldwide depend on for safe and efficient operations.

As a used, fully tested component available through Aeliya Marine Tech, the IS200VTURH2BAC offers operators a cost-effective pathway to maintaining and extending the operational life of their Mark VI control systems. Every unit undergoes comprehensive functional testing before shipment, backed by our standard 30-day warranty and dedicated technical support services.

Whether you are managing a combined cycle power plant, a simple cycle peaking facility, or an industrial cogeneration system, understanding the capabilities and configuration of the IS200VTURH2BAC is essential for maintaining optimal turbine protection and minimizing unplanned downtime. This article provides a comprehensive technical overview of this critical turbine control board.

Product Overview

The IS200VTURH2BAC is a VME (Versa Module Eurocard) turbine protection card designed for installation in the Mark VI Speedtronic protection module rack. It serves as the primary interface between turbine field devices and the Mark VI control processor, handling analog inputs from speed sensors, flame detector inputs, and outputting trip relay commands when protection thresholds are exceeded.

The "VTUR" designation identifies this board as the VME Turbine Protection Unit, specifically Revision H2BAC (Rev C). The board integrates multiple protection functions into a single VME slot, optimizing rack space while delivering comprehensive turbine safeguarding capabilities that meet the stringent requirements of modern power generation applications.

Designed for operation on 125V DC control power, the IS200VTURH2BAC interfaces directly with the Mark VI primary protection processor. It processes signals from up to four independent speed inputs and eight Geiger-Mueller flame detectors, providing redundant monitoring of turbine rotational speed and combustion chamber flame presence. When anomalies are detected, the board activates one of three independent trip relays to initiate an emergency shutdown sequence.

Technical Specifications

Parameter	Value
Product Number	IS200VTURH2BAC
Series	Mark VI Speedtronic
Platform Type	VME Turbine Protection Card
Control Power	125V DC
Speed Inputs	4 Channels (MPU/proximity probe compatible)
Flame Detectors	8x Geiger-Mueller (GM) tube inputs
Trip Relays	3 Independent Form-C relay outputs
Operating Temperature	0 to 60°C
Reference Manual	GEH-6421
Revision	C (H2BAC)
Weight	420 Gm
Condition	Used, Fully Tested

Key Features & Benefits

• Four-Channel Speed Monitoring: The IS200VTURH2BAC accepts inputs from up to four magnetic pickup units (MPUs) or proximity probes, providing comprehensive overspeed protection with redundant sensing capability. Each channel can be independently configured for different speed measurement ranges and alarm thresholds.
• Geiger-Mueller Flame Detection: Eight dedicated inputs for Geiger-Mueller tube-based flame detectors ensure reliable combustion monitoring across all burner cans. GM detectors offer exceptional immunity to optical interference and maintain sensitivity across wide temperature ranges.
• Three Independent Trip Relays: Redundant relay outputs provide multiple layers of protection. Each relay can be configured for different trip functions — including overspeed, flame failure, and vibration — enabling flexible protection schemes tailored to specific turbine configurations.
• 125V DC Operation: The board operates on standard 125V DC control power commonly used in power generation facilities, ensuring compatibility with existing plant infrastructure and battery backup systems.
• VME Bus Architecture: Standard VME form factor enables direct installation into Mark VI protection racks, with backplane connectivity to the TMR (Triple Modular Redundant) control processor for high-integrity safety functions.
• Wide Temperature Range: Rated for 0 to 60°C operation, the board performs reliably in typical industrial control room environments without requiring additional cooling or heating measures.
• Revision C Compatibility: As a Rev C board, the H2BAC variant incorporates all field-proven design improvements and is backward compatible with earlier Mark VI protection system configurations.

Industrial Applications

Gas Turbine Protection Systems

The primary application for the IS200VTURH2BAC is in gas turbine generator protection systems. The board monitors turbine shaft speed through multiple magnetic pickups and watches for flameout conditions via Geiger-Mueller detectors. In the event of dangerous overspeed conditions or loss of flame, the trip relays de-energize fuel valves and initiate an emergency shutdown sequence, protecting the turbine from catastrophic mechanical damage.

Steam Turbine Overspeed Protection

Steam turbine installations utilize the IS200VTURH2BAC as part of their mechanical overspeed protection system. The multiple speed input channels enable redundant speed measurement, with each channel cross-checked against the others. If any two channels agree that the turbine has exceeded its trip speed setpoint, the protection relays activate to close steam admission valves.

Combined Cycle Power Plants

In combined cycle configurations, the IS200VTURH2BAC protects both the gas turbine and the heat recovery steam generator (HRSG) steam turbine sections. The board's ability to monitor multiple flame detectors is particularly valuable in multi-burner gas turbines where individual burner flame monitoring is required.

Industrial Cogeneration Systems

Cogeneration facilities that produce both electricity and process steam rely on the IS200VTURH2BAC for continuous turbine protection. The board's proven reliability in 24/7 operational environments makes it ideal for industrial power applications where downtime carries significant production cost penalties.

Product Configuration & Setup

Installing and configuring the IS200VTURH2BAC requires adherence to GE Mark VI system guidelines documented in the GEH-6421 manual. The board installs in any available slot within the protection section of the Mark VI control rack and is secured using VME card retainers.

Prior to installation, verify that the 125V DC control power is de-energized and appropriate lockout/tagout procedures are followed. The board's front panel connectors provide access to speed sensor wiring, flame detector high-voltage supply and return lines, and trip relay output circuits.

Speed input channels must be configured through the Mark VI Toolbox software to match the tooth count of the turbine speed wheel and the desired measurement units (RPM, Hz, or percent of rated speed). Flame detector channels are set up with individual gain and threshold parameters optimized for the specific GM tubes installed.

Trip relay logic is programmed using the Mark VI protection logic editor, allowing flexible assignment of speed, flame, and auxiliary protection functions to the three available relay outputs. Each relay can be configured for normally energized or normally de-energized operation, with configurable time delays and voting logic.

Related Products from Aeliya Marine Tech

Aeliya Marine Tech maintains an extensive inventory of GE Speedtronic turbine control components and related industrial automation products. Explore these complementary products for your turbine control system:

• GE IS200VTURH2BAC Turbine Controller Board — The featured Mark VI VME turbine protection card with flame detection and trip relay outputs.
• GE IS215VCMIH2CC VME Controller Board — VME bus master controller for Mark VI integration and communication management.
• GE DS200TCPDG2BEC Power Distribution Unit — Mark V TCPD board for power distribution in turbine control racks with fused outputs and LED indicators.
  
• Siemens 6SY7010 Thyristor Module — SCR power module for excitation systems and turbine generator field control.
  

Frequently Asked Questions (FAQ)

External Technical Resources

For additional technical information about GE turbine control systems and related technologies, visit these authoritative external resources:

• GE Gas Power — Official portal for General Electric's gas turbine and power generation solutions, including technical documentation and service information.
• General Electric — Comprehensive overview of GE's history, product divisions, and contributions to industrial automation and power generation.

Why Choose Aeliya Marine Tech

Aeliya Marine Tech has established itself as a trusted supplier of industrial automation and control system components serving power generation, oil and gas, marine, and manufacturing industries worldwide. Our commitment to quality is reflected in every product we sell:

• Comprehensive Testing: All used components are subjected to rigorous bench testing and functional verification before being listed for sale. We document test results and provide them upon request.
• 30-Day Warranty: Every product carries a 30-day replacement warranty, giving you confidence in your purchase and protection against DOA or early failure scenarios.
• Global Shipping: We ship worldwide using trusted logistics partners, with careful packaging designed to protect sensitive electronic components during transit.
• Technical Support: Our team includes experienced control system engineers who can assist with product selection, configuration guidance, and troubleshooting advice.
• Extensive Inventory: We stock thousands of hard-to-find industrial automation components, including GE Speedtronic boards, PLC modules, servo drives, sensors, and more.

When you source your GE IS200VTURH2BAC Turbine Controller Board from Aeliya Marine Tech, you gain a reliable supply chain partner committed to keeping your turbine control systems operational and your generating assets productive.