1. Basic Information

• Model Identifiers: IS215UCVFH2BB (GE System Model), VMIVME-7650-83H (VMIC OEM Model), 350-007650-83H C (Part Number)

• Brand/Series: General Electric (GE) Speedtronic Mark VI Gas/Steam Turbine Control System, IS215 Series VME Bus Single-Board Computer (SBC), originally designed and manufactured by VMIC

• Core Position: Main control/communication/HMI unit for Mark VI systems, responsible for turbine control algorithm execution, real-time data processing, system networking, and local monitoring, serving as the core computing and communication node.

2. Core Hardware Specifications

• Processor: Intel Celeron or Pentium III (configurable), industrial-grade embedded CPU for real-time control computing.

• Bus Architecture: 6U VME bus, single-slot mounting, compatible with Mark VI standard VME chassis, supports TMR (Triple Modular Redundancy) architecture.

• Memory/Storage: 32MB DRAM, 16MB CompactFlash, 128KB L2 cache, battery-backed SRAM (data retention on power loss).

• Power Supply: +5VDC (6.6A typical, 8.6A max), ±12VDC (180mA typical, 250mA max each), powered via VME backplane.

• Operating Environment: 0°C to +55°C, industrial-grade, vibration and EMI resistant, suitable for power plant field conditions.

• Form Factor: 6U VME single-slot board, standard embedded rack mounting.

3. Interfaces & Communication

• Ethernet: Dual 10/100BaseTX (RJ45), supports GE IONet, Modbus, EGD protocols for redundant networking, remote monitoring and DCS integration.

• Serial Ports: 2×RS-232C (9-pin micro D-sub), for commissioning, local device communication and configuration.

• Display/Peripherals: VGA video output, keyboard/mouse interfaces for direct local terminal connection.

• Status Indicators: LED run/fault indicators, reset button for easy installation, commissioning and fault diagnosis.

4. Core Functions & Applications

• Executes core control logic and real-time computation for turbine speed regulation, protection, load control and sequence control, processing complex control algorithms.

• Manages internal data exchange, I/O acquisition, redundant voting, fault diagnosis and switchover in Mark VI systems to ensure high reliability.

• Supports program download, online monitoring, parameter tuning and system configuration; compatible with TMR architecture for critical power generation control.

• Applications: GE Mark VI control systems for gas turbines, steam turbines, combined-cycle power plants and industrial power units, used for main control upgrades, spare parts replacement and system maintenance.