GE IS200VCMIH1BCD – VCMI Communication Module

The GE IS200VCMIH1BCD is a critical communication module in the Mark VI Turbine Control System developed by General Electric. Designed as a VME Communications Interface (VCMI) board, this module provides reliable, high-speed communication between the main processor and multiple I/O (Input/Output) boards within the control rack. It plays a pivotal role in ensuring real-time, fault-tolerant operation in turbine applications.

Technical Specifications

• Model Number: IS200VCMIH1BCD
  (“H1” denotes a hardware version; “BCD” specifies particular configuration options)

• System Compatibility: GE Mark VI Turbine Control System

• Board Format: 6U High VME (Versa Module Eurocard standard)

• Processor: TMS320C32 32-bit DSP (Digital Signal Processor)

• Memory: Dual Port Memory

• Power Supply Voltage: 28 V DC (operating range: 14–32 V DC)

• Communication Protocol: IONet (based on IEEE 802.3 Ethernet with ADL messaging)

• IONet Connection: BNC connector for 10Base2 Ethernet

• Frame Rate: 10 ms

• Mounting Type: DIN-rail

• Construction Technology: Surface mount

• Operating Temperature: –30°C to +65°C (Note: Some versions specify 0°C to +45°C. Confirm model number for exact range.)

• Environmental Protection: Conformal coating (for PCB protection in industrial environments)

• Approx. Dimensions: 17.8 cm (W) × 33.02 cm (L)

• Indicators: Multiple LEDs (Green RUN, Red FAIL, Yellow STATUS)

• Connectors:

• 9-pin serial port

• DIN connector

• Additional pin headers

Key Features

✅ Core Communication Functionality

• Serves as the IONet Bus Master, managing data polling from remote interface modules and broadcasting commands to slave devices.

• Ensures smooth and fast communication across the turbine control network.

🚀 High-Speed Networked I/O

• Enables fast, reliable communication between the main processor and multiple I/O boards.

• Essential for maintaining precise, real-time control in turbine systems.

🔁 Fault Tolerance

• Supports Software Implemented Fault Tolerance (SIFT) Voting.

• In triple-redundant systems, VCMI cards exchange and vote on data before passing it to the processor—eliminating single points of failure and increasing system resilience.

🛠 Robust and Industrial-Grade Design

• Built with conformal coating to protect against dust, moisture, and chemicals.

• Engineered to function under harsh environmental and operational conditions.

🔧 Internal Communication Management

• Not only communicates within its own rack but also with interface, protection, and control modules across the system.

💡 Diagnostic Indicators

• LED indicators on the front panel provide immediate visual status for:

• Operational state

• Fault detection

• Network activity

• Aids in quick diagnostics and troubleshooting.

Application Summary

The IS200VCMIH1BCD is a backbone communication module for the GE Mark VI control system, ensuring high-speed, reliable interaction among processors and I/O components. Its advanced design and robust feature set make it indispensable in turbine control environments where uptime, accuracy, and fault tolerance are critical.