GE IS420UCSBH3A Mark VIe Series Utility Controller module
GE IS420UCSBH3A – Product Overview
The GE IS420UCSBH3A is a Mark VIe Series Utility Controller module engineered for critical turbine and rotating equipment control in industrial applications. Part of GE’s Speedtronic™ family, this high-reliability controller executes safety-rated protection logic (SIL 3 certified) and process algorithms for gas/steam turbines, compressors, and generators in demanding environments.
Key Parameters & Specifications
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Parameter
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Specification
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Manufacturer Part No.
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IS420UCSBH3A
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Product Type
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Mark VIe Utility Controller (Single)
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Series/Platform
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GE Mark VIe Turbine Control System
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Processor
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PowerPC-based @ 400 MHz
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Memory
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128 MB SDRAM, 64 MB Flash
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I/O Connectivity
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• 3x Ethernet Ports (10/100BASE-TX RJ45)
• 1x RS-232 Serial Port |
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Control Network
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Triple Modular Redundant (TMR) Ethernet support
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Safety Rating
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SIL 3 (IEC 61508), TÜV-certified
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Operating Temperature
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-40°C to +70°C
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Voltage Input
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18-32 VDC (Nominal 24VDC)
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Power Consumption
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15W (Typical @ 24VDC)
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Redundancy Support
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Hardware-based TMR configuration
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Certifications
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ATEX, IECEx, UL Class I Div 2, CE, RoHS
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Firmware
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ToolboxST™ v6.0+
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MTBF
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>250,000 hours
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Series & Family
- Series: Mark VIe Safety Programmable Controllers (SPC)
- Family: Speedtronic™ Turbine Control System
- Compatible Systems: Mark VIe, Mark VIeS
- Related Controllers: IS420UCSCH1A (Enhanced), IS420UCSBG1A (Legacy)
Key Features
- Triple Modular Redundancy (TMR): 3-channel fault-tolerant architecture
- Deterministic Execution: <1ms control loop cycle time
- Integrated Safety Logic Solver: SIL 3-compliant safety functions
- Secure Communications: AES-128 encryption for network traffic
- Hot-Swap Capability: Field-replaceable without process shutdown
- Harmonic Immunity: >100 dB noise rejection (IEEE 472)
- Built-in Diagnostics: Continuous hardware/software health monitoring
Function & Role
- Critical Machinery Protection: Overspeed detection, vibration shutdown
- Sequence Control: Automated start-up/shutdown sequencing
- Process Regulation: Fuel/air ratio control, temperature limiting
- Data Acquisition: High-speed sampling (1kHz) for condition monitoring
- Network Gateway: Interfaces with HMI/SCADA via Modbus TCP or OPC UA
Primary Applications
- Gas/Steam Turbine Governing
- Compressor Anti-Surge Control
- Generator Excitation Systems
- BOP (Balance of Plant) Automation
- Fire & Gas Safety Shutdown Systems
Application Fields
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Industry
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Use Cases
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|---|---|
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Power Generation
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Combined-cycle plants, peaker turbines, cogeneration
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Oil & Gas
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Pipeline compressors, offshore platform power gen, LNG liquefaction
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Petrochemical
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Turbine-driven pumps/compressors, flare control
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Marine
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Ship propulsion control, auxiliary power management
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Industrial
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Drive turbines for mills, fans, blowers
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