AAR181-H00/K4A00 Yokogawa | Distributed ER Bus I/O Interface

Product Overview

The AAR181-H00/K4A00 (Model: AAR181) is a high-reliability ER Bus Node Unit engineered for Yokogawa’s CENTUM VP and ProSafe-RS control architectures. This unit functions as a remote I/O interface, facilitating long-distance communication between localized field devices and the central Field Control Unit (FCU). The AAR181-H00/K4A00 (Part Number: AAR181-H00/K4A00) integrates power distribution, communication management, and I/O module slots into a unified chassis, supporting dual-redundant configurations for mission-critical processes.

Designed for high-availability industrial environments, the AAR181-H00/K4A00 (Model: AAR181) utilizes the ER bus protocol to ensure deterministic data transfer even in large-scale plant topologies. Its robust construction and compatibility with various FIO modules make it an essential component for distributed control in oil and gas refineries, petrochemical complexes, and power generation stations where fault tolerance is a non-negotiable requirement.

Detailed Technical Specifications

The AAR181-H00/K4A00 is built to standard 19-inch rackmount dimensions to ensure seamless integration into existing control cabinets.

• Manufacturer: Yokogawa

• Model Number: AAR181-H00/K4A00

• Product Type: ER Bus Node Unit (Remote I/O Node)

• System Compatibility: Yokogawa CENTUM VP, CENTUM CS 3000, ProSafe-RS

• Architecture Support: FIO (Field Interface I/O)

• Communication Interface: ER Bus (supports single or redundant bus)

• Redundancy: Supports dual-redundant Power Supply and Communication Modules

• Number of Slots: Accommodates standard FIO communication and I/O modules

• Input Power: 24 V DC (+20% / -10%)

• Withstand Voltage: 1.5 kV AC between power terminals and ground

• Operating Temperature: -10 °C to +55 °C

• Storage Temperature: -30 °C to +70 °C

• Humidity Range: 5% to 95% RH (Non-condensing)

• Dimensions: 482.6 mm $\times$ 221.5 mm $\times$ 205 mm (Standard 19-inch Rackmount)

• Weight: 0.45 kg

• Certifications: CE, TÜV, CSA, ISO 9001

• Origin: Japan