ABB AI810 3BSE008516R1 8-Channel Analog Input

Description

• Model: ABB AI810 (3BSE008516R1)
• Brand: ABB (Switzerland-Sweden)
• Series: S800 I/O / 800xA / AC800M
• Core Function: 8-channel high-density analog input for current/voltage sensors
• Product Type: Analog Input Module
• Key Specs: 12-bit Resolution 0(4)-20 mA / 0(2)-10 V Group Isolated

• Channels: 8 single-ended inputs
• Input Ranges: 0…20 mA, 4…20 mA, 0…10 V, 2…10 V
• Resolution: 12 bits (including sign)
• Update Time: 10 ms (all 8 channels)
• Input Impedance: 250 Ω (current), >1 MΩ (voltage)
• Isolation: Group isolation from ModuleBus (50 V)
• Power Supply: 24 V DC (19.2 – 30 V)
• Current Consumption: Typ. 50 mA from 24 V source
• Accuracy: Max error 0.1% at 25 °C
• Backplane Requirement: TU810, TU812, TU814, TU818, or TU830

ABB AI810 3BSE008516R1

Application Scenarios & Pain Points

In an 800xA or AC800M architecture, the AI810 is the bridge between your field transmitters (pressure, flow, level) and the controller. The biggest challenge engineers face with these modules is “Signal Clipping” or “Channel Crosstalk” caused by poor grounding or aged internal opto-couplers. When an AI810 fails, you don’t just lose one data point—you often lose 8 critical process variables, which can trip a PID loop and force a total plant shutdown.

Typical Application Scenarios:

1. Chemical Dosing: Precision monitoring of flow rates for reagent injection.
2. Boiler Control: Measuring steam pressure and feed-water levels where 10ms update times are crucial for safety.
3. HVAC Systems: Interfacing with temperature and humidity sensors in pharmaceutical cleanrooms.
4. Water Treatment: Monitoring pH and turbidity levels across multiple filtration tanks.

Case Study: The “Drifting” Pressure Sensor

Background: A gas processing plant noticed their pressure readings were “drifting” randomly by 2-3%, causing inconsistent valve behavior. The field transmitters were calibrated and found healthy.

The Problem: The AI810 module in the rack was over 10 years old. Heat in the cabinet had caused the internal reference voltage regulator to become unstable. Since the error was subtle, it didn’t trigger a module fault, but it made automatic control impossible.

The Solution: We supplied a new AI810 (3BSE008516R1). Before shipping, we calibrated the module against a 4.000 mA and 20.000 mA source to ensure zero drift.

The Result: Once installed, the pressure readings stabilized instantly. The customer realized that even if a module “looks” okay, electronic components have a lifespan, and they now replace these proactively every 8 years.

Compatible Replacement Models

SOP & Quality Transparency

Analog modules require precision. We don’t just check if they power up; we check their accuracy.

1. Linearity Test: We inject 4mA, 8mA, 12mA, 16mA, and 20mA signals. The digital value reported by the module must match within 0.05% of the input.
2. Channel Isolation: We apply a high signal to Channel 1 and verify there is zero “leakage” or noise reflected on Channels 2 through 8.
3. ModuleBus Handshake: We plug the module into an ABB AC800M test rack and verify it is correctly identified in the Control Builder M software.
4. Terminal Unit (TU) Fitment: We check the rear connector pins for any bends or oxidation that could cause intermittent contact with the TU810 base.
5. Sealed Packaging: We ship in anti-static shielding bags to prevent ESD damage during transit.

ABB AI810 3BSE008516R1

Troubleshooting Quick Reference

Integrator’s Tip: ❗ Watch the Loop Power. The AI810 is a passive input module. It does NOT provide 24V power to your field transmitters. If you are using 2-wire transmitters, you must use an external 24V power supply or a TU812 with fused power distribution. I’ve seen many engineers pull their hair out wondering why a sensor isn’t working, only to find they forgot to power the loop!

Additional Inventory Models

Need other parts for your S800 I/O rack? We have these in stock:

1. ABB DI810 Digital Input 24V
2. ABB DO810 Digital Output 24V
3. ABB AO810V2 Analog Output Module
4. ABB TU810V1 Compact Termination Unit
5. ABB PM864K01 Processor Unit
6. ABB AI810 (This Model)
7. ABB CI854A Profibus Master
8. ABB SD822 Power Supply 24V/10A

For technical datasheets and fast quotes, visit www.newplcdcs.com.