ABB AO845 3BSE023676R1 analog output component

Technical Overview

The AO845 (Part Number: 3BSE023676R1) is a high-availability 8-channel analog output component tailored for the S800 I/O architecture. It excels in delivering 4–20 mA signals with integrated HART protocol support, facilitating dual-layer communication for both control commands and instrument diagnostics. Engineered for maximum uptime, this module can be deployed in redundant configurations, making it a cornerstone for mission-critical automation loops in energy and chemical processing plants.

Comprehensive Technical Specifications

• Manufacturer: ABB

• Model Designation: AO845

• Article Number: 3BSE023676R1

• Functional Type: Redundant Analog Output with HART

• Channel Density: 8 Channels (Configurable as Single or Redundant)

• Output Range: 4–20 mA

• Signal Resolution: 12-bit

• Precision Error: ±0.1%

• Maximum Drive Capacity: 750 $\Omega$ (Total Loop Impedance)

• Isolation Rating: 50 V

• Digital Interface: HART Transparent

• Mass: 1.06 lbs (approx. 0.48 kg)

• Condition: Brand New in Original Packaging

• Service Guarantee: 12-Month Warranty

• Logistics Hubs: Dispatched from Shanghai or Xiamen

Typical Applications

• Fault-Tolerant Control: Driving essential valves and dampers where signal loss is unacceptable, utilizing dual-module mirroring.

• Intelligent Asset Tracking: Extracting real-time calibration data and status alerts from smart positioners via the HART link.

• Safety-Instrumented Loops: Providing reliable output paths for high-integrity pressure and flow regulation systems.

• DCS Modernization: Integrating seamlessly into ABB Ability™ System 800xA for unified monitoring and advanced hardware diagnostics.