Description
The ABB 3BSE018105R1, also known as the AI810, is an 8-channel analog input module designed for the ABB AC 800M programmable automation controller (PAC) platform. This I/O module enables precise acquisition of continuous process signals—such as 4–20 mA current loops or 0–10 V voltage signals—from field devices like pressure transmitters, temperature sensors, flow meters, and level gauges. The ABB 3BSE018105R1 supports HART communication superimposed on 4–20 mA signals, allowing digital device diagnostics and configuration without interrupting the analog measurement—a key advantage in smart instrumentation environments.
As part of ABB’s S800 I/O family, the ABB 3BSE018105R1 is engineered for high-density, modular control cabinets and integrates natively with the System 800xA engineering environment and Control Builder M programming suite. Each channel features galvanic isolation from the backplane and other channels, minimizing cross-talk and enhancing noise immunity in electrically harsh industrial settings. With built-in per-channel diagnostics—including open-circuit detection, overrange alerts, and HART status—the ABB 3BSE018105R1 significantly improves system availability and reduces troubleshooting time during operation or maintenance.

ABB 3BSE018105R1
Technical Specifications
| Parameter Name | Parameter Value |
| Product Model | 3BSE018105R1 (AI810) |
| Manufacturer | ABB |
| Product Type | Analog Input Module (S800 I/O Series) |
| Number of Channels | 8 |
| Input Signal Types | 0–20 mA, 4–20 mA (default), 0–10 V, ±10 V (software-configurable per channel) |
| Resolution | 16 bits |
| Accuracy | ±0.1% of full scale (at 25°C) |
| HART Support | Yes – transparent pass-through for HART communicators |
| Galvanic Isolation | Channel-to-channel and channel-to-backplane: 250 VAC RMS |
| Update Time (All Channels) | ≤ 1 ms |
| Required Terminal Base | TB820 (3BSE008558R1) or TB840 (for redundant wiring) |
| Power Consumption | ~3.5 W (from backplane) |
| Operating Temperature | 0°C to +60°C |
| Certifications | CE, UL, cUL, IEC 61010-2-201 |
Main Features and Advantages
High-precision, multi-range analog acquisition:
The ABB 3BSE018105R1 delivers 16-bit resolution across all 8 channels, enabling accurate representation of subtle process variations—critical for applications like boiler drum level control or chemical dosing. Each channel can be independently configured via software for current or voltage input, eliminating the need for external signal conditioners and simplifying spare parts management.
Native HART integration for smart device management:
With built-in HART support, the ABB 3BSE018105R1 allows engineers to use a HART communicator or Asset Optimization tools in System 800xA to read device tags, calibration data, and diagnostic alerts directly through the same 4–20 mA loop used for process control. This eliminates the need for separate handheld testers or auxiliary wiring during commissioning or maintenance.
Robust isolation and noise immunity:
Each input channel on the ABB 3BSE018105R1 is isolated from the system ground and from neighboring channels, preventing ground loops and protecting against common-mode interference from motors, VFDs, or switchgear. This makes it ideal for use in steel mills, power plants, and offshore platforms where electromagnetic noise is pervasive.
Comprehensive per-channel diagnostics:
The module continuously monitors signal health and reports faults such as sensor break (open wire), short circuit, or out-of-range values directly to the AC 800M CPU. These diagnostics appear in real time within System 800xA graphics and alarm logs, enabling predictive maintenance and reducing unplanned downtime.
Seamless integration with AC 800M architecture:
Hardware configuration, scaling, and alarm setup for the ABB 3BSE018105R1 are performed entirely within Control Builder M using drag-and-drop I/O assignment. No DIP switches or jumpers are required—reducing configuration errors and speeding up project delivery.

ABB 3BSE018105R1
Application Field
The ABB 3BSE018105R1 is widely deployed in continuous and batch process industries where reliable analog signal acquisition is fundamental to safe and efficient operation. In thermal and combined-cycle power plants, it monitors critical parameters such as steam pressure, turbine bearing temperature, and flue gas O₂ levels—feeding data to combustion optimization and protection systems. In water and wastewater treatment facilities, the ABB 3BSE018105R1 collects signals from pH probes, turbidity sensors, and flow meters to enable automated chemical dosing and regulatory compliance reporting.
In oil & gas refineries and petrochemical complexes, the ABB 3BSE018105R1 interfaces with smart transmitters on distillation columns, reactors, and storage tanks, supporting both basic process control and advanced asset health monitoring via HART. Similarly, in mining and mineral processing, it captures analog feedback from slurry density meters and pump vibration sensors to prevent equipment damage and optimize throughput. Across all these sectors, the ABB 3BSE018105R1 provides the trusted, high-fidelity input layer that modern industrial automation depends on.
Related Products
ABB TB820 3BSE008558R1: Standard terminal base required for mounting the3BSE018105R1
ABB TB840 3BSE013204R1: Redundant wiring terminal base for critical analog inputs
ABB PM864 3BSE032440R1: AC 800M CPU commonly paired with3BSE018105R1 in control systems
ABB AO810 3BSE008514R1: Complementary 8-channel analog output module
ABB DI810 3BSE000850R1: Digital input module often installed in the same I/O rack
ABB CI854A 3BSE032460R1: PROFIBUS module for remote I/O expansion using3BSE018105R1-type signals



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