Overview
Mark VI was introduced in 1999 for gas and steam turbine controls on generator and mechanical drives. This scalable control can be applied to small systems such as an industrial steam turbine control, large gas turbine control systems, and plant controls.
Applications
Architecture
Control modules are available in 7, 13, and 21 slot VME board racks. I/O devices connect to barrier or box type terminal blocks and then to single-slot I/O boards in the racks. Each I/O board is conveniently front loaded in the rack and contains an on-board C32 DSP processor for local, fast execution of critical loops. Modules can be added local or remote on deterministic Ethernet based I/O networks.
Redundancy
Control systems are available in simplex and triple redundant configuration. Redundant systems feature software voting for maximum fault tolerance, precision diagnostics to minimize mean-time-to-repair, and on-line repair to maximize system availability.
Networks
Ethernet is used at all levels including I/O networks, control networks with peer-to-peer communications between units, and plant network interfaces.
Software
Toolbox maintenance and configuration software is used on turbine and generator controls. Application software is represented in function block and ladder diagram formats with dynamic data that can be dragged-and dropped between blocks or to trends with video type forward-reverse-freeze features.
I/O Types
I/O types are available for both general-purpose I/O devices and the unique sensors and actuators used to control and protect turbines. A variety of industry standard protocols are supported for additional I/O flexibility.
