IS200VAOCH1CBB

About the IS200VAOCH1CBB

The IS200VAOCH1CBB is a component designed and created by GE for the Mark VI system.  GE released the MKVI as part of the “Speedtronic” line, which is a popular, long-running gas/steam turbine management line specifically designed to meet the needs of heavy-duty turbine systems, and to improve their reliability through efficient management.  The MKVI is the third Speedtronic system to offer triple redundant backups on critical controls and protection parameters through its central Control Module. This module is connected to an HMI (human-machine interface) that is designed around a PC with a Windows operating system that has been loaded with software that has been specifically designed to manage heavy-duty turbines, like the GE Control System Toolbox.

The  IS200VAOCH1CBB is one of several ‘second generation’ VAOC boards. These boards support higher load resistance than the original boards (IS200VAOCH1/H1A/H1B.)  This board supports this higher load on eight of its sixteen analog 20mA outputs. The IS200VAOCH1CBB has eight outputs that support 800 Ω load resistance and eight that support a 500 Ω; first generation boards have sixteen outputs that all support 500 Ω load resistance.

The IS200VAOCH1CBB has a front faceplate with three LED components mounted into its surface.  These LEDs are green, red, and orange, and are labeled Run, Fail, and Status. The board has sixteen relay components that each has a relay diagram printed on its top surface, along with dozens of integrated circuits.  Circuits include FPGAs, SRAM components, and oscillating chips. The board also has a variety of resistors, capacitors, and diodes. Connections to other boards are made through two backplane connectors as well as through connections made through the VME rack backplane.