GE IS415UCVGH1A | Mark VI VME Controller – UCVG Processor Board
GE IS415UCVGH1A | Mark VI VME Controller – UCVG Processor Board - Image 2
GE IS415UCVGH1A | Mark VI VME Controller – UCVG Processor Board - Image 3
GE IS415UCVGH1A | Mark VI VME Controller – UCVG Processor Board - Image 4
GE IS415UCVGH1A | Mark VI VME Controller – UCVG Processor Board - Image 5

GE IS415UCVGH1A | Mark VI VME Controller – UCVG Processor Board

  • Model: (also referenced as IS215UCVGH1A)
  • Series: GE Speedtronic Mark VI (Gas & Steam Turbine Control)
  • Type: VMEbus Controller Card (UCVG)
  • Form Factor: Standard 6U, single-slot VME module
  • Processor: Intel Ultra Low Voltage Celeron 650 MHz
  • Memory: 128 MB SDRAM / 128 MB Flash
  • OS: QNX Real-Time Operating System (RTOS)
  • Primary Role: Main system controller, executes turbine control logic
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Part number: IS415UCVGH1A
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Description

Hard-Numbers: Technical Specifications

  • Processor & Memory:
    • CPU: Intel ULV Celeron 650 MHz
    • RAM: 128 MB SDRAM
    • Non-Volatile Storage: 128 MB Flash
    • Cache: 256 KB Advanced Transfer Cache
  • Communication Interfaces:
    • Ethernet: 2× 10/100BaseTX (RJ45)
      • Port 1: UDH (Universal Data Highway) / Peer-to-Peer
      • Port 2: EGD (Ethernet Global Data) / Modbus TCP
    • I/O: VMEbus backplane interface
    • Expansion: 1× PMC site for I/O expansion
  • Physical & Environment:
    • Power: +5 VDC (from VME backplane)
    • Temp: 0°C to +70°C (Commercial) / -30°C to +65°C (Extended)
    • Dimensions: 6U VME (160 × 233 mm)
    • Weight: ~0.7 kg
    • Certifications: UL, CE, Class I Div 2

Real-World Control Function

is the central processing unit for GE Mark VI Speedtronic systems. It runs the QNX RTOS to execute high-speed, deterministic control algorithms for gas and steam turbines, serving as the system’s “brain.”

Core Performance Benefits:

  • Deterministic Control: Sub-millimeter task scheduling for critical speed/load control
  • High Reliability: QNX RTOS for 24/7/365 industrial operation
  • Dual Network Redundancy: Isolated control & data networks prevent comms failure
  • Backward Compatibility: Direct replacement for legacy Mark VI controllers
  • Fast Data Handling: Manages 1000+ I/O points with microsecond latency

Typical Applications:

  • Gas turbine speed/load control
  • Steam turbine inlet/extraction control
  • Compressor anti-surge & performance control
  • Combined-cycle plant master control
  • Turbine supervisory & protection logic

 

System Architecture (Under the Hood)

  1. VME Backplane: Connects to I/O modules (AI, AO, DI, DO) via VMEbus
  2. Control Logic: Executes ControlST/ Toolbox programmed sequences
  3. Networking:
    • Port 1: Communicates with HMI, historians, and other controllers
    • Port 2: Dedicated to high-speed EGD peer-to-peer data exchange
  4. I/O Processing: Reads field inputs, computes control outputs, drives actuators
  5. Diagnostics: Continuous self-test; faults logged to system historian
  6. Non-Volatile Memory: Stores firmware, configuration, and SOE events

 

Field Service Pitfalls (Critical Rules)

1. Firmware/OS Mismatch

  • Issue: Wrong QNX version → control logic fails to load
  • Fix: Match firmware revision (GEH-6421M) to system Toolbox version

2. IP Network Conflict

  • Issue: Duplicate IP on Port 1/2 → comms dropout
  • Rule: Use dedicated subnets; isolate UDH (control) from EGD (data)

3. Improper Shutdown

  • Issue: Power off without OS shutdown → Flash file system corruption
  • Fix: Use software shutdown; wait for OK-to-Power-Off LED

4. ESD Damage

  • Issue: Static discharge → CPU/memory failure
  • Rule: Always use wrist strap; store in anti-static bag

Commercial Note

Please note: The listed price is for reference only and is not binding. Final pricing and terms are subject to negotiation based on current market conditions and availability.

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