Yokogawa

Yokogawa AAR181-S50 CENTUM VP RTD Input Module

SKU AAR181-S50

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Yokogawa

  • Product No.: AAR181-S50

  • Country of origin:Japan

  • Product Type: RTD Input Modules

  • Payment: T/T, Western Union

  • Weight: 200g

  • Dimensions: 32.8 mm x 130 mm x 107.5 mm (W x H x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The Yokogawa AAR181-S50 is an isolated RTD Input Module designed for converting resistance temperature detector field signals into internal system data for Field Control Stations (FCS). Operating within the CENTUM VP architecture and FIO system, this RTD Input Module provides 12 isolated channels supporting 3-wire Pt100 and JPt100 sensors. It interfaces with ESB, Optical ESB, and ER bus node units to deliver temperature measurements directly to the system's control blocks.

Features

  • 12-channel isolated RTD inputs
  • Supports 3-wire Pt100 and JPt100 sensor types
  • Supports dual-redundant configuration
  • Built-in 1 mA measurement current

Applications

  • Distributed Control Systems (DCS) temperature monitoring
  • Process plant temperature acquisition
  • Integration with Field Control Units (AFV30, AFV40, AFV10, AFF50)

Ordering Information

Model Suffix Codes Description
AAR181   RTD Input Module (12-channel, Isolated)
  -S Standard type
  5 With no explosion protection
  0 Basic type

Technical Specifications

Parameter Specification
Model AAR181-S50
Number of Input Channels 12, isolated
Input Signal RTD: JIS C1604:1997, IEC751:1995 Pt100 (3-wire type), JPt100
Allowable Input Voltage +5 V
Accuracy RTD: ±120 mΩ
Allowable Wiring Resistance 40 Ω or less (per wire)
Measurement Current 1 mA
Temperature Drift ±120 mΩ/10 degC (RTD input)
Maximum Current Consumption 450 mA (5 V DC)
Dimensions 32.8 mm x 130 mm x 107.5 mm

Installation Guidelines

  • Bus Node Installation: Mount the module directly into supported ESB bus node units (ANB10S/D), Optical ESB bus node units (ANB11S/D), or ER bus node units (ANR10S/D).
  • Redundancy: Install two identical modules in adjacent slots (odd and even numbered slots) on the same node unit to achieve dual-redundant operation.
  • Wiring Setup: Ensure the wiring resistance for the signal cables of INDA and INC are identical, maintaining a maximum allowable wiring resistance of 40 Ω or less per wire.

FAQ

How many channels does the module provide for RTD sensors?

The module provides 12 isolated channels designed specifically for 3-wire Pt100 and JPt100 RTD inputs.

What is the maximum allowable cable wiring resistance per wire?

The total allowable signal cable wiring resistance must be 40 ohms or less per individual wire.

Can the unit be configured for high-availability redundant operation?

Dual redundancy is supported by installing two identical modules in adjacent odd and even slots of the same node.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Yokogawa AAR181-S50 CENTUM VP RTD Input Module

Quantity
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
Reviews
1 of 2
Only 20 item(s) left in stock
Quantity
View full details

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
Japan

Technical knowledge

Selecting Line Reactors and Output Filters for VFDs

Learn how line reactors, harmonic filters, output reactors, dV/dt filters, and sine filters address different VFD power-quality and motor-cable problems—and how to select them safely.

Light-On and Dark-On Photoelectric Sensor Logic

Learn how light-on and dark-on photoelectric sensor modes interact with through-beam, retroreflective, and diffuse sensing, PNP/NPN wiring, PLC logic, commissioning, and fault detection.

Designing H-Bridge Motor Drives Without Shoot-Through

A practical guide to H-bridge motor drives covering switching states, dead time, inductive current paths, PWM choices, protection, PCB layout, PLC interfacing, and staged commissioning tests.

Designing Mitsubishi FX PLC Sequences with STL and RET

Learn how Mitsubishi FX PLC STL and RET instructions structure conveyor and pneumatic sequences, with practical state design, transition logic, timeouts, diagnostics, and safe restart boundaries.

Selecting and Troubleshooting DIN Valve Connectors

A practical guide to selecting, wiring and diagnosing DIN-style valve connectors, including form identification, coil voltage, suppression, polarity, sealing, release-time effects and commissioning...

PLC or Microcontroller for Arc-Welding Motion Control?

A PLC and a microcontroller can both generate step-and-direction motion, but arc welding exposes major differences in EMC, I/O protection, diagnostics, maintainability, safety integration, and...