The Mark VI Speedtronic turbine control system has been in service for more than 30 years. It is intended to be complete integrated control, protection, and monitoring system for gas and steam turbine generator and mechanical drive applications. It’s also a great place to integrate all of your power island and balance-of-plant controls. To ensure that your control system provides the best turbine performance and that you receive a true “system” solution, GE’s turbine design engineering and controls engineering work closely together to design hardware and software. With Mark VI, you benefit from GE’s unparalleled experience with an advanced turbine control platform.

Architecture

The Control Module, which is available in either a 13- or 21-slot standard VME card rack, is at the heart of the control system. The control module receives inputs via termination boards with barrier or box-type terminal blocks and passive signal conditioning.

Three levels of redundancy

For small applications and large integrated systems with control ranging from a single module to many distributed modules, Mark VI control systems are available in Simplex and Triple Redundant configurations. The term Triple Module Redundant (TMR) refers to the basic architecture, which includes three completely separate and independent Control Modules, power supplies, and IONets.

I/O for General Purposes

Discrete I/O

The VCRC card has 48 digital inputs and 24 digital outputs. The I/O is divided into two Termination Boards for contact inputs and two more for relay outputs.

Analog I/O

A VAIC card has twenty analog inputs and four analog outputs. The I/O is distributed across two Termination Boards. A VAOC has 16 analog outputs and interfaces with either one barrier-type Termination Board or two box-type Termination Boards.

Monitoring Temperature.

A VTCC card interfaces with 24 thermocouples, while a VRTD card interfaces with 16 RTDs.

Application Specific I/O

In addition to general-purpose I/O, the Mark VI includes a wide range of cards designed for direct interface to specialized sensors and actuators. In many applications, this reduces or eliminates the need for interposing instrumentation. As a result, many potential single-point failures in the most critical area are eliminated, resulting in improved running reliability and reduced long-term maintenance.

Operator Interaction

The operator interface is also known as the Human Machine Interface (HMI). It is a PC with a client/server operating system, a Cimplicity graphics display system, a Control System Toolbox for maintenance, and a software interface for the Mark VI and other control systems on the network.

Software Maintenance Tools

The Mark VI control system is fully programmable. Application software is developed using in-house software automation tools that select and integrate proven GE control and protection algorithms with the I/O, sequencing, and displays for each application. A software library contains general-purpose blocks, math blocks, macros, and application-specific blocks.

Summary

World of Controls is one of the industry’s best supplier for genuine OEM GE Speedtronic & GE Excitation replacement parts.