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Yokogawa AAI143‑SS1
- Product Name: Yokogawa AAI143 Analog Input Module (CENTUM VP DCS Series)
- Product Brief: High‑precision analog input module for Yokogawa CENTUM VP distributed control system, designed for acquiring multi‑channel analog process signals from field sensors and transmitters.
- Model Series: CENTUM VP AAI Series DCS I/O Modules
Detailed content
- Technical Specifications:
- Model Code: AAI143‑SS1
- Channel Quantity: 16 isolated analog input channels
- Supported Input Signals: 4‑20 mA DC, 0‑20 mA DC, 1‑5 V DC
- Input Resistance: 250 Ω for current input signals
- Isolation: Channel‑to‑system galvanic isolation
- Power Consumption: ≤ 8 W maximum
- Operating Temperature: 0 °C to +55 °C
- Functional Features: Multi‑channel analog signal acquisition, over‑range detection, open‑circuit detection, signal filtering, digital communication with DCS controller, self‑diagnosis function
- Performance Parameters: Measurement accuracy ±0.05% FS, sampling rate 100 ms per channel, isolation voltage 2000 V AC, EMC compliance with IEC 61000‑6‑2/3
- Material Composition: High‑impact plastic module housing, gold‑plated signal connectors, high‑precision analog‑digital conversion chips
- Structural Characteristics: Backplane‑mounted DCS rack module, hot‑swappable design, front‑panel status indicator LEDs
- Working Principle: Converts field analog electrical signals to digital data via built‑in ADC chips, transmits processed data to DCS controller through internal bus communication, performs real‑time signal monitoring and fault diagnosis
- Advantage Highlights: High channel density, hot‑swap capability, high measurement precision, robust anti‑interference performance, seamless integration with CENTUM VP system
- Applicable Industries: Oil & gas refining, chemical processing, thermal power plants, nuclear power auxiliary systems, large‑scale manufacturing automation
- Installation Requirements: Installed in standard Yokogawa DCS control rack, use dedicated backplane bus connection, comply with DCS grounding specifications
- Usage Precautions: Avoid over‑voltage input to signal terminals, conduct regular module self‑diagnosis checks, maintain clean and dust‑free rack environment
