CENTUM VP/FIO | Yokogawa AAR145-S00 RTD Input Module

Product Overview

The Yokogawa AAR145-S00 functions as a high-density RTD (Resistance Temperature Detector) input interface for CENTUM VP and CS 3000 FIO systems. This module provides 16 isolated channels to capture precise temperature data from field-mounted RTD sensors. It utilizes a constant 1 mA measurement current to determine resistance changes, converting them into digital temperature values for the Distributed Control System (DCS). We supply this module as 100% brand new, original factory stock to ensure thermal measurement accuracy and long-term stability in your process control loops.

Part Number Breakdown: AAR145-S00

• AAR145: RTD Input Module (16-channel, isolated).

• -S: Standard type for general industrial temperature monitoring.

• 0: Always 0 (Standard configuration).

• 0: Basic type without specialized conformal coating.

Technical Specifications

• Manufacturer: Yokogawa

• Input Channels: 16 Isolated Channels

• Measurement Current: 1 mA (RTD)

• Data Update Period: 1 second

• Allowable Input Voltage: ±5 V

• Maximum Current Consumption: 350 mA (5 V DC)

• Signal Source Resistance: 150 Ω or less (total resistance plus wiring)

• Burn-out Detection: All channels (Detection time: 60 s)

• External Connection: Dedicated KS8 / AKB335 cable

• Weight: 0.3 kg

• Condition: 100% Brand New Original

Engineering Advantages

The AAR145-S00 solves complex temperature acquisition challenges through high-performance circuitry and robust isolation:

• Total Channel Isolation: This module provides full electrical isolation between all 16 channels and the system backplane. This prevents ground loops and ensures that a single sensor failure or electrical surge in the field does not affect the remaining inputs or damage the core DCS hardware.

• Integrated Burn-out Detection: The AAR145 includes a configurable burn-out function that detects broken sensor wires or open circuits. By setting the system to drive the signal to a specific limit during a fault, it prevents the DCS from making control decisions based on erroneous "zero" readings.

• High-Resolution Temperature Tracking: With a 1-second data update period and a stable 1 mA excitation current, the module tracks thermal fluctuations with high precision. This ensures the control system responds rapidly to process changes, maintaining tight temperature tolerances.

• Dense Cabinet Integration: The slim 0.3 kg design allows for high-density I/O configurations. By utilizing dedicated KS8 or AKB335 cables, engineers simplify terminal board wiring and reduce the total cabinet space required for large-scale temperature monitoring projects.

FAQs

• What type of cables should I use with the AAR145-S00?

  This module requires dedicated Yokogawa cables, specifically the KS8 or AKB335 series. These cables ensure proper shielding and signal integrity between the module and the terminal block.

• Can I configure burn-out detection for individual channels?

  The AAR145 allows burn-out settings to be applied to all channels together. This ensures a consistent safety state across all 16 temperature points in the event of a sensor or wiring failure.

• Does the module require external power for the RTDs?

  No. The AAR145 provides the 1 mA measurement current directly from its internal circuitry, drawing power from the FIO base module. You only need to connect the 3-wire or 4-wire RTD sensors to the field terminals.

• Is this a genuine Yokogawa component?

  We guarantee that every AAR145-S00 we ship is 100% brand new and original. Each unit arrives in its original factory packaging and includes our comprehensive 1-year warranty.