I/O modules

The GE IS415UCVHH1A and IS215UCVGH1A are powerful VME controller modules developed for the Mark VIe gas turbine control system. These single-board computers (SBCs) serve as the control center of the turbine platform, running high-speed application code and communicating directly with I/O boards through the VME bus. Because of their compact and durable design, they provide stable and efficient control performance even in demanding industrial environments.

Both controllers operate on the QNX real-time operating system, which delivers fast multitasking and exceptional reliability. As a result, they are ideal for gas turbine control systems that require continuous operation, quick response, and precise synchronization.

High-Performance Control and Connectivity

The IS415UCVHH1A executes up to 100,000 logic rungs or function blocks per second, allowing it to process turbine data with remarkable accuracy. Moreover, it synchronizes with the VCMI communication board clock within 100 microseconds, ensuring precise timing between system components.

To enhance connectivity, the module includes several communication ports that simplify integration with other devices:

• Ethernet Port – Connects with HMI and control systems through the UDH network.
• RS-232C COM1 – Used for setup and diagnostics.
• RS-232C COM2 – Interfaces with Distributed Control Systems (DCS).

Thanks to these interfaces, the controller easily manages communication across multiple layers, ensuring smooth data transfer and reliable operation.

Operation and System Integration

In a simplex configuration, the controller directly processes all input and output signals from I/O boards. However, in a TMR (Triple Modular Redundant) configuration, it exchanges data among controllers to guarantee system redundancy and eliminate downtime. Through the VME backplane, the controller communicates with the VCMI module, which handles database updates and signal coordination across the entire control system.

This high-speed data flow, combined with real-time synchronization, helps maintain optimal turbine performance while minimizing operational risks.

Installation and Cooling Requirements

Installing the IS415UCVHH1A is straightforward but requires attention to detail. It must be paired with a VCMI module to complete the control setup. Depending on your system design, you can mount it in GE Fanuc or Mark VIe VME racks:

• Shorter GE Fanuc racks work well for standalone modules with remote I/O.
• Longer Mark VIe racks support both local and remote I/O configurations.

During installation, ensure that proper cooling is maintained. A cooling fan should be mounted either above or below the controller, depending on rack orientation. Additionally, in standalone configurations, a VDSK board powers the fan and provides an ID signal for rack identification.

Following these steps guarantees stable operation, long service life, and reliable communication between control components.

Technical Specifications

Details