General Electric IS415UCVHH1A Mark VIe Controller Board

Description

The IS415UCVHH1A is a single board computer (SBC) controller board designed by General Electric as part of the Mark VIe series VME platforms for gas turbine control systems. Known natively as the Mark VIe UCVH controller, this 6U-high board executes turbine application code by connecting to turbine I/O boards over a VME bus. The board mounts securely within a dedicated VME rack referred to as the control module. Operating on QNX, a real-time, multitasking operating system built for high-speed industrial reliability, the IS415UCVHH1A delivers connectivity to engineer and operator interfaces via three dedicated onboard communication ports. These include Ethernet paths to the Unit Data Highway (UDH) for HMI interface alongside two serial connections for standalone configuration and distributed control system (DCS) interaction.

Features

• Executes application-specific code designed for steam, gas, land-marine derivative (LM), or balance of plant (BOP) industrial goods.
• Processes up to 100,000 rungs or functional blocks every second under standard collection configurations.
• Synchronizes internal processing tasks to the companion VCMI communication board clock within a 100-microsecond threshold via an external clock interrupt.
• Handles bidirectional external data mapping to and from the control system database (CSDB) across the VME bus via a VCMI master unit.
• Supports both simplex system setups for primary process I/O data processing and Triple Modular Redundant (TMR) architectures requiring hardware voting and inter-controller state exchanges.

Applications

• Gas and steam turbine control applications.
• Land-marine derivative (LM) turbine control.
• Balance of plant (BOP) control architectures.
• High-reliability industrial systems utilizing 6U VME rack integration.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Module Composition: Install the controller alongside a companion VCMI board inside the designated control module frame.
• Rack Selection: The assembly supports three rack types: a short GE Fanuc integrator's rack (restricted to standalone layouts with remote I/O) and two distinct lengths of Mark VIe racks that accommodate localized or remote I/O structures.
• Thermal Management: A dedicated cooling fan must be positioned either directly above or below the controller slot depending on the physical rack selection.
• Integrator Auxiliary Boards: When employing the standalone control module inside a GE Fanuc integrator's rack, integrate a VDSK board to properly distribute fan power and transmit rack identification details via an ID link.