Product Overview
The ABB AI801 is a high-performance analog input module designed for demanding industrial automation environments. This 8-channel current input module accepts 0...20 mA and 4...20 mA signals, making it ideal for process control, monitoring, and data acquisition in sectors such as oil & gas, power, chemical, and manufacturing.
Built on the proven S800 I/O platform, the AI801 delivers reliable signal conditioning with robust protection against electrical faults. Its compact design and detachable connectors simplify installation and maintenance, reducing downtime and operational costs.
Key Features & Benefits
- 8 channels for 0...20 mA, 4...20 mA d.c., single-ended unipolar inputs
- 1 group of 8 channels isolated from ground
- 12-bit resolution for precise measurement
- Input shunt resistors protected to 30 V by PTC resistor
- Analog inputs are short-circuit secured to ZP or +24 V
- Withstands HART communication (though HART is not enabled)
- Process and power connections via detachable connectors
Technical Specifications
| Parameter |
Value |
| Article number |
3BSE020512R1 |
| Type |
Analog Input |
| Signal specification |
0...20 mA, 4...20 mA |
| Number of channels |
8 |
| Signal type |
Unipolar single ended |
| Resolution |
12 bit |
| Input impedance (current input incl PTC) |
230 - 275 kΩ |
| Isolation |
Groupwise isolated from ground |
| Under/over range |
0% / +15% |
| Error Max |
0.1% |
| Temperature drift |
Typ. 50 ppm/°C, Max. 80 ppm/°C |
| Input filter (rise time 0-90%) |
180 ms |
| Update cycle time |
1 ms |
| Maximum field cable length |
600 meters (656 yards) |
| Max input voltage (non destructive) |
30 V d.c. |
| NMRR, 50Hz, 60Hz |
> 40 dB |
| Rated insulation voltage |
50 V |
| Dielectric test voltage |
500 V a.c. |
| Power dissipation |
1.1 W |
| Current consumption +5 V Modulebus |
70 mA |
| Current consumption +24 V Modulebus |
0 mA |
| Current consumption +24 V external |
30 mA |
| Supported wire size (Solid) |
0.05-2.5 mm², 30-12 AWG |
| Supported wire size (Stranded) |
0.05-1.5 mm², 30-12 AWG |
| Recommended torque |
0.5-0.6 Nm |
| Stripping length |
6-7.5 mm, 0.24-0.30 inch |
| Dimensions (W x D x H) |
86.1 mm x 58.5 mm x 110 mm |
| Weight |
0.24 kg (0.53 lbs.) |
Industry Applications
The AI801 excels in process control loops where accurate current signal acquisition is critical. Typical applications include:
-
Process Control: Monitoring and controlling temperature, pressure, flow, and level transmitters in refineries and chemical plants.
-
Power Generation: Acquiring signals from sensors in turbine control, boiler management, and auxiliary systems.
-
Manufacturing Automation: Integrating with PLC/DCS systems for production line monitoring and quality control.
Thanks to its 0.1% accuracy and fast 1 ms update cycle, the AI801 ensures responsive and precise data acquisition, improving overall process efficiency.
Installation & Setup
Mount the AI801 on a standard DIN rail or in an S800 I/O rack. Use detachable connectors for process and power wiring. For current inputs, connect the transmitter supply as per the wiring diagram. Ensure proper grounding and observe the maximum field cable length of 600 meters. Tighten terminal screws to the recommended torque of 0.5-0.6 Nm. The module supports solid wires from 0.05-2.5 mm² and stranded wires from 0.05-1.5 mm², with a stripping length of 6-7.5 mm.
Maintenance & Reliability
The AI801 requires minimal maintenance due to its robust design. Periodically inspect the module for dust accumulation and ensure the ambient temperature stays within 0 to +55 °C (32 to 131 °F). The PTC resistor protects against overcurrent, and the module is short-circuit proof to +24 V or ZP, reducing the risk of damage. For long-term reliability, keep the module within the specified environmental conditions and follow the recommended cleaning procedures.
Compatibility & Integration
The AI801 is part of the ABB S800 I/O system and is compatible with ABB's AC 800M, AC 800F, and other S800 controllers. It communicates over the Modulebus, drawing 70 mA from the +5 V supply. The module supports HART communication, allowing integration with HART-enabled transmitters. For seamless integration, ensure the module is configured with the correct parameters in the control system.
Buying Guide
When purchasing the ABB AI801, verify the article number 3BSE020512R1 to ensure you receive the correct module. Check that your control system is compatible with S800 I/O modules. For genuine parts and reliable service, choose PLC Source PRO as your supplier. We offer a wide range of ABB automation spares and have a dedicated team to assist with your requirements.