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GE IS220PPROH1A

Turbine Protection I/O Pack designed for GE Mark VIe control system, managing emergency shutdown and overspeed protection for gas and steam turbines.
  • Product Introduction: A high-integrity turbine protection I/O pack that serves as a localized intelligence center, digitizing critical safety signals directly at the terminal board to minimize signal latency. Engineered to handle high-speed pulse inputs for turbine shaft speed monitoring and hard-wired emergency trip strings.
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Detailed content

  • Technical Specifications:
    • Origin: United States
    • Weight: 1.40 lbs (0.64 kg)
    • Dimensions: 8.26 × 1.78 × 4.72 inches
    • Input Channels:
      • 3 speed inputs (magnetic pickup or active)
      • 12 logic inputs (contact inputs)
      • 9 thermocouple inputs
    • Network: Dual 10/100 Mbps Ethernet ports (IONet) for fault-tolerant communication
    • Redundancy: Supports Triple Modular Redundant (TMR) architecture
    • Certification: SIL 2/3 capable in approved configurations
  • Core Functions: Turbine signal acquisition, hardware-level overspeed protection, emergency trip control.
  • Working Principle: Utilizes dual IONet ports to provide a robust communication bridge to controllers, ensuring protection logic remains active even during localized network failure. Typically works with TREAH_A terminal board for aero-derivative turbine emergency trip applications.
  • Structural Features: Works with TREAH_A terminal board for aero-derivative turbine emergency trip applications; aluminum or stainless steel housing; typically mounts to SPRO terminal board using side jackscrews.
  • Installation Requirements:
    • In TMR systems, three PPRO packs must be installed across the three cores to maintain 2-out-of-3 (2oo3) voting integrity
    • Use high-quality shielded twisted-pair cabling for magnetic pickup inputs to prevent electromagnetic interference
    • Tighten side jackscrews to specified torque when mounting to SPRO terminal board to ensure internal connectors and ground paths are fully engaged
  • Usage Notes:
    • Monitor the “ATTN” (Attention) LED; a solid amber light indicates the pack is in a “Not Ready” state, typically due to firmware mismatch or failure to synchronize with the IONet master
    • Supports TMR (Triple Modular Redundancy) and simplex backup protection
  • Applications: Large-scale gas and steam turbine emergency shutdown, overspeed protection, and critical safety trip control in power generation.

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