YOKOGAWA AAI143‑S00

Technical Specifications: 16 isolated input channels, input signal 4‑20 mA DC, maximum allowable input current 24 mA, A/D conversion resolution 16‑bit, channel‑to‑system electrical isolation, power consumption 230 mA@5 V DC, 540 mA@24 V DC.

Functional Features: Input wire‑break detection, over‑range diagnosis, basic signal filtering, LED module‑running‑status indication, screw‑terminal field wiring, support system hot‑swap under redundant configuration.

Application Scenarios: General‑process industry non‑HART transmitter signal acquisition, water‑treatment plant DCS measurement‑input, building‑material‑industry process monitoring, transformation project replacing old‑generation analog‑input modules of Centum‑VP system.

Performance Parameters: Basic measurement accuracy ±0.1 % full scale, operating temperature 0 ℃ ~ +60 ℃, relative humidity 5‑95 % non‑condensing, IP20 protection grade, module weight 0.3 kg.

Material Composition: Flame‑retardant engineering‑plastic housing, multi‑layer industrial printed circuit board, signal isolation components, high‑precision A/D conversion chip, gold‑plated ESB‑bus connector.

Structural Features: Standard plug‑in module matching Centum‑VP node chassis, front‑panel screw‑type field‑wiring terminals, module‑status LED indicator, rear‑side ESB‑bus back‑plane connector, mechanical locking buckle.

Working Principle: Field 4‑20 mA analog measurement‑signal enters input channel, pass through isolation circuit to eliminate ground‑loop interference, complete analog‑to‑digital conversion, converted digital‑measurement data is transmitted to DCS control node via ESB bus; detect wire‑break and over‑range fault of input loop and upload fault‑alarm information to host system.

Installation Requirements: Install into specified slot of Centum‑VP node unit, fasten mechanical locking buckle, connect field‑transmitter shielded signal‑cable to front‑side screw terminals, ensure node‑unit power‑supply normal, complete hardware‑configuration download in engineering software.

Usage Notes: This S00 version module does not support HART communication function, forbid access to HART‑superimposed signal loop; field‑cable shield adopts single‑end grounding; do not hot‑plug module under non‑redundant powered‑on condition; inspect terminal‑screw tightening‑torque to prevent bad contact.