GE IS215VCMIH2BE / IS200VCMIH2BEE – VCMI Communication Interface Modules

1. Product Overview

The GE IS215VCMIH2BE and IS200VCMIH2BEE are advanced VCMI (VME Communication Interface) modules designed for GE Mark VI and Mark VIe turbine control systems. They serve as the communication backbone between the controller, I/O modules, and system networks, ensuring synchronized data exchange, deterministic response, and high system reliability. These modules are widely used in gas turbines, steam turbines, and balance-of-plant applications where stable and secure communication is critical.

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2. Design & Internal Architecture

The VCMI modules feature a robust multi-layer hardware architecture engineered for industrial-grade performance:

• Central Communication Processor responsible for managing data flow on the VME backplane.

• Dual-Port Memory System that maintains consistent and synchronized communication between processors.

• Fiber-Optic & Electrical Interfaces for high-speed, noise-immune data transfer.

• Watchdog & Redundancy Logic ensuring continuous operation even during partial system failures.

• Front-Face LED Indicators displaying link status, diagnostics, and module health.

• EMI-Shielded Protective Housing engineered for harsh environments.

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3. Technical Parameters 

Specification	Details
Module Type	VCMI Communication Interface Module
Models Included	IS215VCMIH2BE, IS200VCMIH2BEE
System Compatibility	GE Mark VI / Mark VIe
Communication Roles	Controller-to-I/O, board-to-board, synchronization
Memory	High-speed dual-port RAM
Interfaces	Electrical backplane, fiber-optic links
Voltage	5 VDC (backplane supplied)
Cooling	Forced-air via system rack
Status Indicators	Multi-color LEDs for port, network, and module health
Operating Temperature	Typically –20°C to +65°C
Mounting	VME rack slot installation

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4. Core Features

• High-Speed Data Handling: Optimized for real-time turbine control data flow with minimal latency.

• Fault-Tolerant Design: Supports redundant architectures to enhance system availability in mission-critical power applications.

• Broad System Integration: Seamlessly communicates with controllers, VME boards, protection modules, and external I/O units.

• Improved Noise Immunity: Fiber-optic transmission reduces EMI risks in high-power turbine environments.

• Scalable Architecture: Can be used in simplex, dual, or triple modular redundancy (TMR) configurations.

• Extended Diagnostics: Built-in self-test functions and LED monitoring help technicians identify issues quickly.

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5. Application Fields

The IS215VCMIH2BE / IS200VCMIH2BEE modules are widely used in:

• Gas turbine and steam turbine control systems

• GE Mark VI/VIe distributed control platforms

• Power plant supervisory systems

• Industrial drive and excitation systems

• Balance-of-plant equipment communication

• Process automation networks requiring deterministic data exchange

  
  

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6. Installation & Maintenance Guidelines

• Install the module into the correct VME rack slot, ensuring secure alignment with backplane connectors.

• Verify that the rack cooling fans are functioning properly to maintain airflow.

• Fiber-optic connectors should be kept clean and capped when not in use to avoid signal loss.

• Use GE Toolbox / ToolboxST for configuration, verification, and diagnostics.

• Regularly monitor module LEDs to identify abnormal communication activity.

• Perform periodic firmware updates following GE’s system maintenance procedures.

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7. Additional Notes

These VCMI modules are central components in GE turbine control communication networks. Their combination of high-speed processing, redundancy support, and robust electrical design ensures reliable coordination between all major system elements. Whether used in modernized power plants or legacy Mark VI installations, the IS215VCMIH2BE / IS200VCMIH2BEE modules contribute significantly to stable and efficient turbine operation.