The ABB AI810 (3BSE008516R1) is a versatile 8-channel analog input module designed for the S800 I/O system. This module is a core component of the ABB Ability™ System 800xA and Compact Product Suite, providing high-accuracy data acquisition for standard industrial current and voltage signals. The “Long” designation typically refers to its compatibility with extended terminal bases or its physical footprint within the S800 mounting architecture, ensuring robust field wiring connectivity.
Product Specifications
Technical Parameters
- Model Identification: AI810
- Product ID: 3BSE008516R1
- Manufacturer: ABB
- Number of Channels: 8 single-ended channels
- Input Types:
- Current: 0…20 mA, 4…20 mA
- Voltage: 0…5 V, 1…5 V, 0…10 V, 2…10 V
- A/D Resolution: 12-bit
- Input Impedance: 250 \Omega (Current) / > 1 M\Omega (Voltage)
- Isolation: Group-wise isolation from the ModuleBus and external power
- Power Supply: 24 V DC (19.2…30 V)
Physical Datasheet
- Dimensions: 119mm x 45mm x 102mm (Standard S800 module size)
- Weight: 0.2 kg (0.44 lbs)
- Country of Origin: Estonia / Sweden
- Mounting: Requires an MTU (Module Termination Unit) such as TU810, TU812, or TU814.
- Operating Temperature: 0°C to +55°C (Standard) / -25°C to +70°C (Extended)
Application Fields
The AI810 is widely used across various process industries:
- Oil & Gas: Monitoring pressure, temperature, and flow transmitters in upstream and downstream facilities.
- Power Generation: Collecting analog telemetry for boiler control and turbine monitoring.
- Chemical Processing: Interfacing with pH sensors, conductivity meters, and level transmitters.
- Water Treatment: Managing pump speeds and chemical dosing levels via 4-20mA feedback loops.
Product Usage Instructions
- MTU Selection: The AI810 must be plugged into a compatible Module Termination Unit (MTU). The TU810 (Screw terminals) or TU814 (Crimp terminals) are commonly used for 8-channel configurations.
- Configuration: Use ABB Control Builder M to set the input range for each channel. Ensure the “Signal Range” in the software matches the physical signal being sent by the field device (e.g., 4-20mA).
- Wiring: For current inputs (4-20mA), ensure the loop is correctly powered. The AI810 can be used in both 2-wire (loop-powered) and 4-wire (self-powered) transmitter configurations.
- Grounding: Ensure the MTU’s DIN rail is properly grounded. Proper shielding of the analog signal cables is essential to minimize noise and signal jitter.
- Hot-Swap: The S800 system supports “Hot-Configuration In Run” (HCIR). You can replace an AI810 module while the system is powered, provided the process safety allows for a temporary loss of those 8 signals.

Q&A – Frequently Asked Questions
Q: Can the AI810 detect a broken wire in a 4-20mA loop?
A: Yes. When configured for 4-20mA, the module will trigger an “Underflow” or “Channel Error” if the current drops below approximately 2-3mA, allowing for rapid detection of cable breaks.
Q: Does the AI810 support HART communication?
A: No. The AI810 is a standard analog module. If you require HART pass-through for smart instrument diagnostics, you should use the AI830 or AI845 modules.
Q: Is the 3BSE008516R1 compatible with older S800 clusters?
A: Yes, it is fully backward compatible with the S800 I/O family and can be used with CI801, CI810, or CI840 Communication Interface modules.
Q: Where can I get a quote or technical documentation?
A: For official pricing, 12-month warranties, and availability of new or refurbished units, please visit our ABB AI810 3BSE008516R1 Resource Page.
Product Related News
In 2026, the ABB AI810 remains a high-volume “Universal Spare” for the aging global base of System 800xA installations. As plants move toward “Industry 4.0” readiness, the AI810 is often part of digitalization projects where legacy 4-20mA signals are being integrated into higher-level asset management software. Maintenance trends show that the AI810’s rugged design continues to make it a preferred choice for harsh environments. Many facilities are currently performing “I/O Health Audits,” replacing modules that have reached their 15-year service mark with new 3BSE008516R1 units to ensure signal reliability for the next decade of operation.
