Product Introduction: ABB AI843 3BSE028925R1

The ABB AI843 3BSE028925R1 is an advanced Analog Input (AI) module designed to operate within the AC 800M controller family, part of ABB’s renowned 800xA distributed control system (DCS) platform. As a 16-channel current input module, it facilitates seamless integration of analog sensor signals (such as pressure, temperature, and flow) into process automation systems. Engineered for reliability and high-speed data acquisition, the AI843 supports HART communication for smart instrumentation integration.

Designed for use with the S800 I/O series, the AI843 enables highly accurate analog data acquisition with compact design and efficient installation. Its plug-and-play capability with the Module Termination Units (MTUs) simplifies maintenance and reduces system downtime. With robust fault detection, channel diagnostics, and environmental resilience, this module ensures optimal performance even in demanding industrial environments.

Product Advantages

• High Channel Density: Offers 16 differential current input channels in a single module, enhancing system scalability while saving cabinet space.

• HART Protocol Support: Enables digital communication with HART-capable field devices for improved diagnostics and device configuration.

• Plug & Play Integration: Easily fits into the S800 I/O structure with minimal configuration and seamless replacement through MTU interfaces.

• Built-in Diagnostics: Provides comprehensive channel-level diagnostics and fault detection for enhanced system reliability and reduced downtime.

• Industrial-Grade Reliability: Designed to operate in harsh industrial environments with high electromagnetic compatibility and temperature resilience.

• Hot Swap Capability: Allows for replacement or addition of modules during live operation without requiring a system shutdown.

Technical Specifications

Applications

The AI843 module is widely used in process industries where accurate analog input signal acquisition is critical. It is ideal for:

• Oil and Gas processing plants

• Chemical and petrochemical industries

• Power generation (thermal, hydro, nuclear)

• Water and wastewater treatment plants

• Pharmaceutical and food & beverage industries

• Pulp and paper manufacturing

• Mining and metallurgy

Its ability to communicate with HART-enabled field instruments makes it perfect for advanced process automation systems that require precise monitoring and control.

Compatible Models

The AI843 works seamlessly with the following components within the ABB S800 I/O and AC 800M architecture:

• TU841: Module Termination Unit for 16-channel AI modules

• TU844: Compact MTU for AI modules

• PM861 / PM864 / PM891: AC 800M Controllers

• CI854 / CI860: Communication Interfaces for PROFIBUS and FOUNDATION Fieldbus

• AI845, AI801, AI820: Other AI modules for flexible configurations

• HART Handheld Communicators: For HART signal communication and configuration

Installation Instructions

1. Power Down the control system before beginning installation, unless utilizing hot-swap capabilities with supported MTUs.

2. Mount the MTU (e.g., TU841 or TU844) securely on the DIN rail.

3. Insert the AI843 Module onto the MTU ensuring firm connection without forcing. The module should click into place.

4. Connect Field Wires to the designated terminals on the MTU. Refer to wiring diagrams to match current loop signals appropriately.

5. Verify HART Configuration using an appropriate tool if HART devices are connected.

6. Power Up the system and check the status LEDs for proper operation.

7. Configure Module Parameters using ABB’s Control Builder M or 800xA System Configuration Tools.

6 Related Models in the Same Series

8 Popular ABB Models

FAQs – ABB AI843 3BSE028925R1

Q1: What type of input signals does the AI843 support?
A1: The AI843 supports analog current input signals, specifically 0–20 mA and 4–20 mA, and also supports HART communication for smart instrumentation.

Q2: Can I hot-swap the AI843 module during operation?
A2: Yes, when installed with a compatible MTU like TU841 or TU844, the AI843 supports hot-swapping without interrupting the rest of the system.

Q3: How do I integrate HART-enabled devices with the AI843?
A3: Connect your HART device through the MTU and use ABB’s 800xA HART configuration tools or a handheld HART communicator to configure and monitor your instruments.

Q4: What controller platforms is the AI843 compatible with?
A4: The AI843 is fully compatible with ABB’s AC 800M controllers including PM861, PM864, and PM891.

Q5: Is the AI843 suitable for safety-critical applications?
A5: While the AI843 features robust diagnostics and reliability, for safety-integrated systems, ABB provides SIL-rated modules. Always check project safety requirements before selection.

Q6: What is the power requirement of the AI843 module?
A6: The AI843 operates on 24 V DC, supplied via the backplane connection through the MTU, and has a power consumption of approximately 1.1 W.