ABB Bailey NASI02 Analog Input Module
Product Overview
The ABB Bailey NASI02 Analog Input Module is designed to provide high-performance analog signal acquisition for the INFI 90 Distributed Control System (DCS). It accepts standard current loop inputs (typically 4–20 mA) from a variety of field instruments, including transmitters for pressure, temperature, level, and flow. With robust design, built-in diagnostics, and high-resolution input processing, the NASI02 ensures accurate and reliable data capture essential for critical process control applications in industries such as energy, petrochemical, and water treatment.
Key Features
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Multiple Analog Input Channels – Captures multiple 4–20 mA signals for monitoring various process variables
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High Input Resolution – Ensures fine granularity and precision in signal conversion and data acquisition
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Full INFI 90 Compatibility – Seamlessly integrates with ABB Bailey INFI 90 systems for centralized control
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Galvanic Isolation – Electrical isolation between input channels and logic circuits ensures system safety and signal integrity
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Built-in Diagnostics – Provides status monitoring and fault detection for quick issue resolution
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Hot-Swappable Design – Supports online replacement without system shutdown
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Stable and Accurate Performance – Optimized for minimal drift and long-term reliability in industrial conditions
Technical Specifications
3.1 Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 138 x 40 x 120 mm |
| Weight | 0.454 kg |
3.2 Electrical Characteristics
| Item | Specification |
|---|---|
| Input Channels | 8 (typical) |
| Input Signal | 4–20 mA DC |
| Input Impedance | 250 Ω (nominal) |
| Resolution | 12 bits |
| Accuracy | ±0.1% of span |
| Isolation Voltage | 1500 V RMS (channel-to-logic) |
3.3 Environmental Characteristics
| Item | Specification |
|---|---|
| Operating Temp | 0°C to +60°C |
| Storage Temp | -40°C to +85°C |
| Humidity | 5%–95% RH (non-condensing) |
| Vibration | IEC 60068-2 compliant |
| Protection | IP20 (when mounted) |
3.4 System Compatibility
| Item | Specification |
|---|---|
| Platform | ABB Bailey INFI 90 DCS |
| Module Type | Analog Input Module |
| Communication | INFI-Net Bus Interface |
| Redundancy | Supported (with system design) |
Industry Applications
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Power Generation – Gathers vital process measurements from turbines, boilers, and auxiliary systems
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Oil & Gas – Monitors flow, pressure, and temperature in upstream and downstream operations
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Water and Wastewater Treatment – Acquires level and flow data for safe and efficient treatment processes
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Chemical Processing – Provides real-time analog data for monitoring critical process variables
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Metals and Mining – Tracks temperature and hydraulic pressure in processing and refining systems
The ABB Bailey NASI02 Analog Input Module delivers dependable, accurate, and isolated analog signal acquisition for demanding industrial automation environments. Designed for seamless use with the INFI 90 system, it supports precise and stable process monitoring essential for control and safety in mission-critical operations.
