Mark IV to Mark VIe Turbine Control Migration

Mark IV to Mark Vle Turbiine Control Platform

Efficient Pre-packaged Upgrades to Minimize Downtime

Marrying today's technology to yesterday's controls for continuing life-cycle support
Overview
Mark IV was GE's first micro-processor based gas turbine control featuring triple redundant control and protection. Over 1,000 units shipped from 1983 to 1993 for power generation and mechanical drive applications. Today, most of these reliable systems are still in service but are constrained by the limitations of first generation processor technology.

Product Description

GE now offers a Mark IV to Mark VIe migration program to upgrade these legacy systems to modern technology with minimum downtime. Prefabricated bases with Mark VIe electronics are installed in the existing Mark IV cabinets and connected to the existing terminal boards with plug-in wire harnesses. Field terminations and turbine devices are retained to minimize installation time.

First generation operator interfaces are replaced with modern HMIs, graphics packages, configuration and diagnostics tools, and Ethernet networks. The Mark IV's serial communications to plant monitoring systems are replicated and modern protocols such as OPC are available to upgrade communications.

For power generation applications, a Digital Front End (DFE) upgrade is available for the control section of GE exciters. It shares the same configuration and diagnostics software as the Mark VIe to simplify maintenance.

Value
Once completed, the new control system has all the functionality and flexibility of GE's most modern control platform with abundant compute power, flexible networks, and user friendly software tools for operators and maintenance personnel. The Mark VIe includes improved fault tolerance with software voting and more precise diagnostics that enable on-line repair at the I/O module for better availability and mean-time-to-repair.

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