Yokogawa AAR145-S50 CENTUM VP/FIO RTD and POT Input Module

Product Overview

The Yokogawa AAR145-S50 functions as a high-density Analog Input Module specifically designed for the CENTUM VP and CS 3000 FIO (Field network I/O) architectures. This module provides 16 isolated channels to interface with RTD (Resistance Temperature Detector) and POT (Potentiometer) sensors. It converts variable resistance signals from the field into precise digital data for the Distributed Control System (DCS). We supply this module as 100% brand new, original factory stock to ensure measurement accuracy and system stability for your non-hazardous area process control.

Part Number Breakdown: AAR145-S50

• AAR145: RTD/POT Input Module (16-channel, Isolated).

• -S: Standard type for general industrial applications.

• 5: With no explosion protection (Optimized for standard control room environments).

• 0: Basic type without specialized conformal coating.

Technical Specifications

• Manufacturer: Yokogawa

• Input Type: RTD (Resistance Temperature Detector) / POT (Potentiometer)

• Number of Channels: 16 (Fully Isolated)

• Data Update Period: 1 second

• Excitation Current: 1 mA (for RTD measurement)

• Isolation: Channel-to-channel and Channel-to-system isolation

• Mounting: Plug-in installation on FIO baseplate

• Signal Connection: Dedicated KS8 / AKB335 cable interface

• Condition: 100% Brand New Original

Engineering Advantages

The AAR145-S50 optimizes thermal and position monitoring through advanced electrical shielding and high-density design:

• Comprehensive Signal Isolation: This module employs complete electrical isolation across all 16 channels. This prevents ground loops and ensures that a field-side electrical surge or sensor failure on one channel does not interfere with the accuracy of the remaining 15 inputs.

• Dual-Function Versatility: The AAR145-S50 handles both temperature (RTD) and position/resistance (POT) signals. This flexibility allows engineers to standardize on a single module type for diverse sensing needs, reducing the total spare parts inventory required for the facility.

• High-Resolution Resistance Tracking: The module utilizes a stable 1 mA excitation current to maintain high-precision readings over long cable runs. It compensates for lead-wire resistance, ensuring that the DCS receives the actual process value rather than a signal skewed by wiring distance.

• Efficient Cabinet Footprint: The high-density 16-channel architecture maximizes I/O capacity within the FIO nest. This allows for more monitoring points in a smaller physical space, significantly lowering the total cost of cabinet infrastructure and installation.

FAQs

• What is the primary difference between the S00 and S50 versions?

  The S50 suffix indicates that the module provides no explosion protection. Use this version specifically in non-hazardous areas or standard industrial control rooms where explosion-proof certification is not a requirement.

• Does this module support both 3-wire and 4-wire RTD configurations?

  Yes. The AAR145-S50 supports standard RTD wiring configurations to provide lead-wire compensation, ensuring accurate temperature measurements regardless of the distance between the sensor and the I/O cabinet.

• How do I connect field wiring to the AAR145-S50?

  This module requires a dedicated Yokogawa cable (typically the KS8 or AKB335 series) to connect the module to the terminal board. This ensures secure, noise-free signal transmission from the field terminals to the DCS backplane.

• Is this a genuine Yokogawa component?

  We guarantee that every AAR145-S50 we ship is 100% brand new and original. Each unit arrives in its original factory packaging and includes our comprehensive 1-year warranty.