GE IS220YAICS1AL Safety Analog I/O Pack
Mark VIeS SIL3-Certified Analog I/O | 16-bit Precision | Redundant IONet | “L” Factory-Calibrated | Turbine Safety Control
1. Core Product Overview
The GE IS220YAICS1AL is a **SIL3-certified safety analog I/O pack** in the Mark VIeS series, engineered for critical safety instrumented systems (SIS) in gas/steam turbines, combined cycle power plants, and oil & gas/petrochemical hazardous areas. The “L” suffix denotes a **factory-calibrated variant** with enhanced 16-bit precision, preloaded safety logic, and optimized IONet parameters for seamless integration with Mark VIeS controllers (IS220UCSAH1AK/IS420UCSCH1A). It integrates 8 analog input channels (4-20mA/0-10V/RTD/thermocouple) and 4 analog output channels (4-20mA/0-10V), supporting high-precision measurement of temperature, pressure, flow, and vibration signals for safety loops (overspeed protection, flameout detection, emergency shutdown). Designed for Mark VIeS backplane compatibility, redundant 24V DC power (10W), and -20°C~+60°C industrial operation, it meets **Class I, Div 2/ATEX Zone 2** hazardous area ratings, with IP20 protection and conformal coating for harsh environments. The module’s safety-certified hardware/software design ensures fault isolation, deterministic signal processing, and SIL3 compliance for safety integrity level 3 applications.
• Core Role: Mark VIeS safety analog I/O; SIL3 safety loop control; critical signal acquisition/processing; emergency shutdown (ESD); overspeed protection
• Model Info: IS220YAICS1AL (full PN); “L” = factory-calibrated variant; Mark VIeS Safety Analog I/O Pack; SIL3-certified; 8AI/4AO channels
• Key Specs: 16-bit resolution; 8AI (4-20mA/0-10V/RTD/TC); 4AO (4-20mA/0-10V); 24V DC redundant power; -20°C~+60°C; 10W max power
• Safety Compliance: SIL3 (IEC 61508/IEC 61511); Class I, Div 2/ATEX Zone 2; fault isolation; deterministic processing; redundant IONet
2. I/O Channels & Signal Processing
The IS220YAICS1AL’s 8 analog input channels support **4-20mA (2-wire/3-wire)**, **0-10V voltage**, **RTD (PT100/PT1000)**, and **thermocouple (J/K/T/E/R/S/B)**, with 16-bit resolution (±0.05% accuracy) for high-precision measurement of safety-critical parameters (turbine speed, exhaust temperature, fuel pressure). The 4 analog output channels (4-20mA/0-10V) provide deterministic control signals for safety valves, actuators, and emergency shutdown devices, with<10ms response time and fault-safe output (0mA/0V) in case of module failure. The “L” variant’s factory calibration includes channel-specific offset/ gain tuning, RTD/thermocouple linearization, and output signal trimming, reducing on-site setup time and ensuring consistency across safety loops. The module’s signal processing includes ECC memory error correction, overrange/underrange detection, and open-circuit/short-circuit diagnostics, with front-panel LEDs indicating channel status, power, and fault conditions.
• Analog Inputs (8): 4-20mA/0-10V/RTD/TC; 16-bit resolution; ±0.05% accuracy; 2/3-wire sensor connection; overrange/underrange detection
• Analog Outputs (4): 4-20mA/0-10V; 16-bit resolution; ±0.1% accuracy;<10ms response; fault-safe output (0mA/0V); overcurrent protection
• Signal Processing: ECC memory error correction; RTD/TC linearization; channel isolation; deterministic sampling (100Hz); open-circuit/short-circuit diagnostics
• “L” Variant Calibration: Factory channel tuning; offset/gain calibration; signal trimming; RTD/TC sensor matching; safety loop pre-configuration
3. Communication & Mark VIeS Ecosystem
The IS220YAICS1AL is a Mark VIeS backplane-compatible I/O pack, integrating dual redundant Ethernet ports for **IONet real-time data** and **Modbus TCP/PROFINET RT** communication with ESWB/ESWA industrial switches. It supports Mark VIeS safety communication protocols, enabling seamless data exchange with safety controllers and I/O packs (PUAA/PAICH/PSCA), while front-panel LEDs provide real-time status of power, communication, and fault conditions. The module works with Mark VIeS terminal boards (IS200STAIS1A/IS400STAIS1A/IS200TBAIS1C) for field wiring, with the “L” variant factory configuration including pre-tuned IONet parameters and Modbus register mapping for safety loops. It is fully compatible with ToolboxST/ControlST software for safety configuration, SIL3 loop validation, and remote diagnostics—reducing on-site setup time and ensuring compliance with IEC 61508/IEC 61511 standards.
• Ethernet Connectivity: 2×100/1000Mbps ports (IONet/Modbus TCP/PROFINET RT); redundant network support; Cat5e/Cat6 cabling (100m max)
• Mark VIeS Compatibility: Backplane integration; IS200STAIS1A/IS400STAIS1A terminal boards; IS220UCSAH1AK/IS420UCSCH1A controllers; ESWB/ESWA switches
• Safety Communication: IONet safety protocol; Modbus TCP safety register; PROFINET RT safety communication; fault isolation messaging
• Software Integration: ToolboxST/ControlST for safety configuration; SIL3 loop validation; remote diagnostics; “L” variant pre-configuration upload
4. Safety, Compliance & Target Applications
The IS220YAICS1AL is certified for **SIL3 (IEC 61508/IEC 61511)**, **Class I, Div 2 (Groups A-D)**, and **ATEX Zone 2** hazardous locations, with low-power design to prevent ignition in explosive atmospheres. It meets IEC 61010-1 electrical safety, IEC 61000-4 EMC immunity, and RoHS compliance, with IP20 protection, conformal coating, and a -20°C~+60°C operating temperature range to withstand dust, vibration, and extreme temperatures in industrial cabinets. The fanless, convection-cooled design (no moving parts) paired with redundant 24V DC power inputs (overvoltage/undervoltage protection) ensures uninterrupted operation during outages. Typical applications include gas/steam turbine safety control, combined cycle power plants, oil & gas compressors, and chemical processing—where SIL3 safety integrity, high-precision analog I/O, and hazardous area compliance are critical.
• Safety Certification: SIL3 (IEC 61508/IEC 61511); Class I, Div 2 (Groups A-D); ATEX Zone 2; UL 913/IEC 60079-11
• Environmental Resilience: -20°C~+60°C operating temp; 5-95% non-condensing humidity; IP20; conformal coating; fanless cooling
• Compliance: CE/UL/RoHS; IEC 61010-1/61000-4; fault isolation; ESD protection; surge suppression; 24-month GE warranty
• Key Sectors: Power generation (turbine safety); oil & gas; petrochemical; chemical processing; safety instrumented systems (SIS)
5. Installation, Configuration & Maintenance
Installation: Mark VIeS backplane mounting; dual 24V DC power connection; Ethernet port assignment (IONet/Modbus); terminal board wiring (IS200STAIS1A/IS400STAIS1A); ToolboxST initial safety setup.
Configuration: SIL3 safety loop setup; IONet/PROFINET parameter tuning; analog I/O channel mapping; fault-safe output configuration; LED status verification via ControlST.
“L” Variant Setup: Factory-calibrated parameters upload; safety loop validation; IONet safety communication tuning; Modbus register mapping for safety data; SIL3 compliance check.
Maintenance: Fanless design (no mechanical maintenance); visual LED fault check; remote safety diagnostics via ToolboxST; channel isolation testing; 6-month preventive inspection (cabling/connections).
Quality Assurance: GE genuine module; factory “L” variant calibration; SIL3 pre-configuration; 24-month warranty; technical support for safety integration/SIL3 compliance.
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Technical Documentation | GE IS220YAICS1AL | Mark VIeS Safety Analog I/O Pack (SIL3, 8AI/4AO, “L” Calibrated)
