Controllers - GE Mark VIe System Manual

1.2 Controllers

Note For more information on the Mark VIe controller, refer to the Mark VIe and Mark VIeS Control Systems Volume II:
System Guide for General-purpose Applications (GEH-6721_Vol_II), the chapter Controllers. More more information on the
Mark VIeS Safety controller, refer to the Mark VIeS Control Functional Safety Manual (GEH-6723).
For a list of controllers that are available for each control system, including the supported and unsupported features the
controllers offer for that control system, refer to the ToolboxST User Guide for Mark Controls Platform (GEH-6700 or
GEH-6703).
Control System Overview
The Mark VIe controller is a stand-alone, single-board controller with scalable
processing power. It includes built-in power supplies and requires no batteries or
jumper settings. Controllers run the ControlST* Software Suite, providing a common
software environment for turbine and generator excitation controls in the power island
and balance of plant equipment to simplify operations and maintenance.
The Mark VIeS Safety controller is IEC 61508 certified to SIL 3.
Controllers are loaded with software specific to its application, such as steam, gas,
land-marine (LM), Balance of Plant (BoP), offshore drilling, desalination, CS, and
Wind Power Conversion. It can run Relay Ladder Diagrams (RLD) or blocks. The
IEEE ® 1588 protocol is used through the R, S, and T I/O networks (IONet) to
synchronize the clock of the I/O modules and controllers to within ±100 microseconds.
Data is transferred to and from the control system database in the controller over the
I/O networks (IONet). IONet data includes process inputs/outputs to the I/O packs.
In a dual system, IONet data also includes:
• Internal state values and initialization information from the
• Status and synchronization information from both controllers
In a triple module redundant (TMR) system, IONet data also includes:
• Internal state values for voting and status and synchronization information from all
three controllers
• Initialization information from the designated controller
Public Information
designated controller
GEH-6721_Vol_I_BP System Guide 15