GE IS420UCSBH3A | Analog Input/Output Module for Mark V Turbine Control

Description

Product Overview​

• Acts as an interface between field devices (e.g., LVDTs, servo valves) and the turbine control system.
• Supports emergency shutdown protocols​ by validating sensor data during abnormal operating conditions.

• Signal Conditioning: Scales and filters analog inputs (e.g., compressor stall detection signals).
• Output Control: Drives servo valves and relays with ±0.5% accuracy.
• Diagnostic Monitoring: Detects open-circuit or short-circuit faults in sensor lines.

• Compatible with GE’s Mark V control systems and third-party DCS via 3PL bus.
• Supports Modbus TCP for cross-platform communication.

  

  GE IS420UCSBH3A

Technical Specifications​

• Model: IS420UCSBH3A
• Manufacturer: GE
• Product Type: Analog I/O Module
• Signal Inputs:
  • Analog: 16 channels (4–20 mA, ±10 V DC)
  • Thermocouple: 8 channels (Type J/K, ±2.2 mV/°C)
• Signal Outputs:
  • Analog: 8 channels (4–20 mA, ±10 V DC)
  • Relay: 4 channels (SPDT, 5 A/250 V AC)
• Communication:
  • 3PL Bus: 1 Mbps data rate
  • JE Connector: Generator/line signal interface
• Environmental Ratings:
  • Temperature: -40°C to +85°C (storage), -20°C to +60°C (operating)
  • Humidity: 5–95% non-condensing
• Certifications: UL 508, CE, ATEX Zone 2 (IIC)

Core Features & Customer Value​

1. High-Accuracy Signal Processing:
   • Built-in 24-bit ADC ensures ±0.1% FS accuracy for critical turbine parameters (e.g., fuel flow, vibration).
   • Application: Maintains combustion efficiency in gas turbines by compensating for sensor drift.
2. Flexible Configuration:
   • Hardware jumpers (J1–J8) allow customization of output ranges (e.g., 4–20 mA or 0–20 mA).
   • Application: Adapts to varying turbine models without firmware updates.
3. Robust Fault Detection:
   • Auto-diagnostic alerts for open-circuit ( >500 Ω) or short-circuit ( <10 Ω) conditions.
   • Application: Prevents unplanned shutdowns in power plants by isolating faulty sensors.

     

     GE IS420UCSBH3A

Typical Applications​

1. Gas Turbine Control:
   • Compressor Stall Monitoring: Processes LVDT signals to detect rotor position deviations.
   • Example: Maintains stable output in combined-cycle plants during load fluctuations.
2. Power Plant Safety Systems:
   • Emergency Shutdown (ESD): Drives relay outputs to isolate fuel valves during over-temperature events.
3. Renewable Energy:
   • Wind Turbine Pitch Control: Regulates servo valves to adjust blade angles based on wind speed data.

Installation & Maintenance​

• Mounting: DIN rail or panel-mounting with IP20-rated enclosure.
• Wiring: Pre-terminated connectors for sensors (e.g., 24 V DC thermocouples).
• Diagnostics: LED indicators for communication status, overcurrent, and sensor faults alerts.
• Service:
  • Annual calibration for analog inputs (±0.5% FS).
  • Field-replaceable input/output modules for minimal downtime.