GE IS220PPROS1B TMR processor
GE IS220PPROS1B Technical Specification
Specification
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Attribute
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Detail
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Part Number
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Manufacturer
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General Electric (GE)
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Series
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Mark VIe Speedtronic™
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Country of Origin
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USA
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Function
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Protective Processor Module (Triple Modular Redundant)
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Description
The GE IS220PPROS1B is a high-integrity TMR (Triple Modular Redundant) processor for GE’s Mark VIe platform, engineered for critical turbine protection systems. It executes safety-rated logic (SIL 3) for overspeed detection, flame monitoring, and emergency shutdowns using three synchronized processing lanes. Features hardware-based voting logic, fault injection diagnostics, and seamless integration with Mark VIe I/O networks via PCIe backplane.
Features
- TMR Architecture: Three independent PowerPC 750GL @ 800 MHz lanes with hardware voter (2-out-of-3 consensus).
- Safety Certification: SIL 3 (IEC 61508) & IEC 61511 for functional safety applications.
- Integrated Diagnostics: Continuous self-tests (CPU, memory, voter logic) + fault injection capability.
- Secure Communication: AES-256 encrypted peer-to-peer sync (≤1 μs skew between lanes).
- Extreme Ruggedization: -40°C to +70°C operation, 5g vibration resistance (IEC 60068-2-6).
- Redundant Interfaces: Dual 1 GbE ports per lane (IEEE 1588 PTPv2) + RS-485 for legacy devices.
- Failsafe Design: Watchdog timers + independent shutdown circuitry per lane.
Electrical Specifications
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Parameter
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Specification
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Input Voltage
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24V DC ±10% (via VME backplane)
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Power Consumption
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38W (typical), 55W (max)
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Backplane Bandwidth
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PCIe x4 (8 Gbps full-duplex)
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Isolation
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2500V AC channel-to-channel (per lane)
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Sync Accuracy
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<100 ns inter-lane skew
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Product Properties
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Property
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Specification
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I/O Compatibility
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Works with PDIO, VDIO, TCMI I/O packs
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Communication Protocols
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SRTP, GOOSE (IEC 61850), Modbus TCP
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Cybersecurity
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FIPS 140-2 Level 2 encryption, secure bootchain
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MTBF
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350,000 hours (IEC 61709)
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Safety Certifications
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TÜV Rheinland SIL 3, UL 508, ATEX Cat 3
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Dimensions
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233 × 160 × 20 mm (9.2 × 6.3 × 0.8 in)
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Weight
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0.9 kg (2.0 lbs)
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Performance Metrics
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Metric
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Value
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Logic Scan Time
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5 ms (typical for protection loops)
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Voter Latency
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<300 ns (critical trip signals)
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Fault Detection Time
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<100 ms (lane isolation)
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Non-Volatile Storage
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2 MB FRAM (trip event logging)
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Key Applications
- Turbine Emergency Shutdown: Overspeed (>110% nominal), excessive vibration, lube oil failure.
- Burner Management Systems: Flame detection & permissive interlock sequencing.
- Nuclear Safety Systems: Reactor trip logic (via SIL 3 qualification).
- Compressor Stations: Surge control & high-pressure protection.
⚠️ Critical Integration Notes:
- TMR Mandatory: Requires three identical modules (e.g., IS220PPROS1B x3) with dedicated sync cabling.
- Firmware Lockstep: All lanes must run identical firmware version (ToolboxST v9.1+ recommended).
- I/O Constraints: Only safety-certified I/O cards (e.g., IS220PDIAH1A) permitted in protection loops.
- Cooling: 400 LFM airflow required; derate above 55°C ambient.
- Testing: Annual fault injection tests mandated for SIL 3 compliance.
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