Description
Model: HAI805
Brand: ABB
Series: ABB Symphony Plus SD HART I/O Series
Core Function: Collects 4-20mA field signals with HART protocol parsing
Type: HART Analog Input Module
Key Specs: 8 isolated channels, 4-20mA input, per-channel dedicated HART modem
Supply Status: In stock
Stock: Available
Warranty: 1 year
Ship From: China

ABB HAI805
Product System Integration Overview
The ABB HAI805 is a high-performance HART-enabled analog input module designed exclusively for ABB Symphony Plus distributed control systems. Working with the matching ITU805 base unit, it forms a complete field signal acquisition subsystem for process industries. As a critical front-end I/O device, it bridges smart field transmitters and the central DCS controller, enabling seamless integration of conventional analog signals and intelligent HART device data. The module supports remote distributed deployment, allowing installation up to 3 kilometers away from the main controller via fiber repeaters, which greatly expands field wiring flexibility. It is widely deployed in new intelligent factory construction, traditional DCS system upgrades and obsolete analog module replacement projects in process manufacturing fields.
Detailed Product Functionalities
This multi-channel analog input module delivers professional signal acquisition and intelligent protocol analysis functions to support refined process control. It accurately collects 4-20mA standard analog signals from pressure, temperature, flow and liquid level transmitters across 8 group-isolated channels, ensuring independent and interference-free signal collection for each loop. Equipped with a dedicated HART modem per channel, it supports full parsing of multi-variable data from HART smart instruments, acquiring secondary, tertiary and quaternary process variables with a response speed within one second. The module realizes real-time signal filtering, data sorting and stable transmission to the upper controller, while supporting real-time monitoring of field instrument operating status and fault diagnosis, providing comprehensive data support for process adjustment and equipment maintenance.

ABB HAI805
Product Features & Technical Strengths
The ABB HAI805 analog input module features exclusive per-channel HART design, strong signal isolation and outstanding long-term operational stability, outperforming ordinary universal analog modules. The independent channel isolation structure effectively eliminates crosstalk interference between adjacent signal loops, guaranteeing ultra-high acquisition accuracy even in complex electromagnetic industrial environments. The built-in dedicated HART modem avoids protocol compatibility issues of shared modem schemes, improving data parsing efficiency and stability. Complying with strict IEC industrial electromagnetic compatibility standards, it adapts to long-term 24/7 uninterrupted operation under factory temperature and humidity fluctuations. The modular plug-and-play structure simplifies on-site installation, wiring and later maintenance replacement, effectively reducing system downtime and engineering costs.
Industrial Application Scenarios
This high-precision HART analog input module is widely applied in complex process industrial automation scenarios requiring intelligent signal collection. It is mainly used in thermal power plant DCS systems, petrochemical production control platforms, natural gas processing equipment, pharmaceutical fine chemical automation lines and municipal environmental protection monitoring systems. As a core intelligent I/O component of the Symphony Plus series, it efficiently acquires and analyzes field analog and HART intelligent device data, improving the refinement, accuracy and intelligence level of industrial process control and system operation management.
