GE IS215VCMIH2CA & IS200VCMIH2CAA | VME Communication Interface Board (VCMI) for Mark VI Turbine Control
VMEbus Master Controller & IONet/ONet Communication Hub with Dual-port RAM for GE Speedtronic Mark VI & Mark V Retrofits
1. Product Overview
The GE IS215VCMIH2CA (Mark VI standard) and IS200VCMIH2CAA (Mark V upgrade) are VCMI (VME Communication Interface) boards, core communication components in GE Speedtronic Mark VI turbine control systems, also applicable to Mark V gas turbine retrofits. As VMEbus master controllers and bus arbitrators, they bridge the VMEbus backplane, IONet/ONet field networks, and system controllers, enabling multi-processor parallel operation via 256 KB dual-port RAM for VMEbus, realizing seamless data sharing between CPUs and I/O modules. The front panel is equipped with 3 ONet (IONet) ports (10 Mbps, fiber-optic/electrical) and 1 RS-232 serial port (for configuration/debugging), supporting redundant network topology, with an ONet communication distance of up to 1 km (electrical) and 20 km (single-mode fiber). It has a 32-bit VMEbus interface (64 MB address space), a 25 MHz clock, 512 KB Flash memory, and 2 MB DRAM, with 8-channel digital status I/O for system monitoring. With a redundant dual-power supply of +5 V DC (3 A) and ±12 V DC (0.8 A), reverse connection protection, 4000 V ESD protection, and an operating temperature range of -40°C to +70°C, it is suitable for critical control scenarios in power generation, oil & gas, and petrochemical industries, ensuring reliable operation of turbine speed regulation, load distribution, and safety protection systems.
Key Specifications
• Model: IS215VCMIH2CA (Mark VI Standard) | IS200VCMIH2CAA (Mark V Upgrade) | GE VCMI VME Communication Interface Board
• Compatibility: GE Mark VI turbine control system; Mark V gas turbine retrofits
• VMEbus Interface: 32-bit VMEbus master/arbitrator; 64 MB address space; 25 MHz clock; 256 KB dual-port RAM
• Communication Ports: 3×ONet (IONet) ports (10 Mbps, fiber/electrical); 1×RS-232 serial port (9.6 kbps - 115.2 kbps)
• Memory: 512 KB Flash (firmware); 2 MB DRAM (data buffer); 256 KB dual-port RAM (VME data sharing)
• I/O Monitoring: 8-channel digital status I/O (system health monitoring)
• Power Supply: +5 V DC (3 A), ±12 V DC (0.8 A each); Redundant dual-power input; Reverse connection protection
• Environmental: Operating: -40°C to +70°C; Storage: -40°C to +85°C; Humidity: 5–95% (non-condensing)
• Certifications: IEC 61010-1 safety; EMC (EN 55022/EN 55024); VMEbus compliance
2. Core Features
• VMEbus Master Control: 32-bit VMEbus arbitration and 64 MB address mapping for multi-processor system coordination
• Dual-port RAM Data Sharing: 256 KB dual-port RAM enables zero-latency data exchange between VMEbus CPUs and I/O modules
• IONet/ONet Redundancy: 3 ONet ports support redundant ring/dual-network topologies for fault-tolerant field communication
• Serial Configuration Port: RS-232 for on-site debugging, firmware updates, and system parameterization
• Mark V/VI Compatibility: IS200VCMIH2CAA for Mark V upgrades; IS215VCMIH2CA for Mark VI standard deployments
• Industrial-Grade Protection: 4000 V ESD protection, reverse power connection protection, wide temperature range for harsh turbine environments
• Status Monitoring: 8 digital I/O channels for real-time tracking of module health, port activity, and bus status
• High-Speed Data Transfer: 25 MHz VMEbus clock and 10 Mbps ONet ports ensure fast response for turbine control loops
YMGK Purchase Information
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3. Typical Applications
• Power Generation: Gas/steam turbine control (Mark VI); Mark V turbine upgrade retrofits; generator load management systems
• Oil & Gas: Pipeline compressor turbine control; LNG plant gas turbine monitoring; offshore platform power generation control
• Petrochemical: Refinery cogeneration turbine control; chemical plant steam turbine speed regulation; fertilizer plant power system integration
• Industrial Power: Combined cycle power plant turbine coordination; waste-to-energy plant turbine control; distributed power generation systems
• Marine: Shipboard gas turbine propulsion control; LNG carrier power system monitoring; offshore rig turbine management
4. Installation & Maintenance
Installation: Insert into Mark VI VME chassis Slot (VCMI designated); connect 3 ONet ports to IONet ring/dual network; link RS-232 to configuration PC; wire redundant +5 V/±12 V power; set VME address via DIP switches; power on and verify bus arbitration & ONet communication.
Maintenance: Weekly: Check status LEDs (Power, VME Bus, ONet 1-3, Fault); Monthly: Verify VME data transfer and ONet port signal quality; Annual: Test dual-port RAM integrity and firmware update; clean module contacts and inspect power/reverse protection.
Safety Notes: Power off chassis before insertion/removal; use shielded cables for ONet/RS-232; ensure proper grounding for EMC compliance; avoid hot-swapping to prevent VMEbus damage.
Technical Document | GE IS215VCMIH2CA & IS200VCMIH2CAA | VME Communication Interface Board for Turbine Control Systems
