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Yokogawa AAI143‑SS1
- Product Name: Analog Input Module
- Model Series: AAI Series DCS Input Modules (Centum VP/CS 3000 System)
- Technical Specifications: Input channel quantity: 16 channels; input signal: 4‑20 mA DC; resolution: 16‑bit; sampling cycle: 100 ms; power consumption: ≤6 W; isolation: channel‑to‑system bus isolation; operating temperature: 0 °C to +55 °C
Detailed content
- Functional Features: Multi‑channel analog signal acquisition; over‑range detection; short‑circuit monitoring; self‑diagnosis function; data filtering; hot‑swap capability; direct integration with Yokogawa Centum control system
- Performance Parameters: Conversion accuracy: ±0.05% FS; input impedance: ≥1 MΩ; common‑mode rejection ratio (CMRR): ≥100 dB; noise rejection compliant with IEC 61000‑6‑2
- Material Composition: Industrial‑grade metal‑reinforced plastic housing; gold‑plated contact connectors; high‑reliability PCB; corrosion‑resistant terminal components
- Structural Characteristics: Rack‑mounted modular design for DCS cabinet; front‑panel status LED indicators; integrated terminal unit connection; hot‑swap support without system shutdown
- Working Principle: Collects 4‑20 mA analog process signals via precision current‑sampling circuits; converts analog signals to digital data through high‑resolution ADC modules; transmits data to the DCS controller via internal system bus
- Advantages: High‑density multi‑channel input; high measurement accuracy; robust self‑diagnosis; hot‑swap maintenance; seamless compatibility with Yokogawa DCS platforms; long‑term operational stability
- Applicable Industries: Petrochemical, refining, power plants, chemical processing, pulp & paper, mining, large‑scale industrial automation
- Installation Requirements: Install in standard industrial control cabinet racks; ensure proper grounding of module housing; maintain cabinet temperature within rated range; use dedicated shielded cables for field wiring
- Usage Precautions: Do not apply over‑voltage signals to input channels; avoid electromagnetic interference near high‑power equipment; regularly inspect connector contact integrity; follow Yokogawa DCS system wiring specifications strictly
