Description
ABB HAI805 S+ I/O HART Analog Input Module
Continuing the industrial automation hardware sequence, HAI805 specifies an 8-channel HART Analog Input module from the S+ I/O (SD Series) family, designed by ABB for the Symphony Plus Distributed Control System (DCS).
Key Specifications & Overview
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Manufacturer: ABB
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Product Family: Symphony Plus / S+ I/O (SD Series)
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Component Type: 8-Channel HART Analog Input Module
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Primary Function: Interfaces smart field devices (transmitters, flow meters, valves) utilizing the HART communication protocol with Symphony Plus controllers (such as the HPC800) via redundant HN800 bus architecture.
Technical Characteristics
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Input Channels: 8 independent analog input channels
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HART Integration: Dedicated HART modem allocated to every individual channel (unlike typical modules that share a single multiplexer modem).
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Variable Processing: Scans and updates standard 4–20 mA primary variables alongside digital secondary, tertiary, and quaternary variables directly into the control application.
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Update Rate: Secondary/digital variables refresh typically within 650 ms (maximum 750 ms).
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System Bus Connection: Connects via the redundant HN800 communication bus, supporting remote installation up to 3 km away using fiber-optic repeaters.
Software & Configuration
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Fully integrated within ABB’s S+ Engineering environment using Device Type Manager (DTM) technology for seamless parameterization, device diagnostics, and maintenance.
HAI805
Product Overview
HAI805 is an 8-channel HART-enabled Analog Input Module manufactured by ABB for the Symphony Plus SD Series distributed control system.
Each channel is equipped with an independent dedicated HART modem. It receives 4–20mA analog signals from field transmitters, converts analog values into digital data, and simultaneously extracts HART digital auxiliary information including device status, secondary variables and diagnostic data. It communicates with the controller via HN800 fieldbus.
The module supports group galvanic isolation and comprehensive channel diagnostics, widely used in power plants, pulp & paper, chemical and hydropower automation projects. It must be matched with the ITU805 terminal base during installation.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | HAI805 |
| Module Type | 8-Channel HART Analog Input Module |
| Manufacturer | ABB |
| Applicable Platform | Symphony Plus DCS, SD Series I/O Station |
| Channel Configuration | 8 group-isolated analog input channels |
| Standard Signal | 4–20mA two-wire HART transmitter input |
| HART Function | Independent HART modem per channel; access secondary/tertiary process variables |
| Signal Accuracy | ≤ ±0.2% FS under rated operating temperature |
| Internal Bus | ABB HN800 fieldbus |
| Matching Terminal Base | ITU805 |
| Power Supply | Powered by station backplane |
| Hot Swap | Supported under qualified station configuration |
| Operating Temperature | 0 ℃ ~ +55 ℃ |
| Ambient Humidity | 5%–95% non-condensing |
| Protection Class | IP20 (cabinet mounting) |
| Front Panel | LED indicators for module status and channel fault alarm |
| Engineering Software | Symphony Plus Engineering Tool |
| Spare Part Status | OEM production discontinued; surplus new and refurbished spare modules available |
Key Features
- Independent HART modem for every channel, enabling real-time use of multi-variable data in control logic
- Group isolation design effectively suppresses electromagnetic interference in heavy industrial environments
- Built-in channel diagnostics to detect field circuit open circuit and abnormal load status
- Supports HART device parameter configuration, alarm monitoring and device health management
- Compact SD series form factor, convenient for cabinet layout and maintenance replacement
- Hardware variant differences cannot be directly interchanged; replacement requires consistent module part number and terminal base
- Corresponding analog output counterpart model: HAO805
