Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | ABB AI835A |
| Manufacturer | ABB |
| Product Category | High-Density Analog Input Module |
| Channels | 16 single-ended/8 differential |
| Input Types | ±10V, ±5V, ±1V, ±500mV, ±150mV, ±50mV |
| Resolution | 16-bit |
| Accuracy | ±0.05% of reading ±5µV |
| Sampling Rate | 10 kS/s (aggregate) |
| Common Mode Rejection | >120 dB @ 50/60 Hz |
| Input Impedance | >1 MΩ |
| Overvoltage Protection | ±30V continuous |
| Isolation | 1500V channel-to-bus |
| Power Supply | +5V DC ±5% (via backplane) |
| Power Consumption | 3.5W typical |
| Operating Temperature | -20°C to +70°C |
| Compatible Systems | ABB S800 I/O, Advant Controller 410 |
ABB AI835A
Product Introduction
The ABB AI835A represents the pinnacle of high-density analog signal acquisition technology, designed for mission-critical process control applications requiring exceptional measurement precision. As part of ABB’s premium S800 I/O family, this 16-channel module delivers laboratory-grade accuracy in harsh industrial environments.
Engineered for high-availability systems, the AI835A features advanced signal conditioning with automatic zero and span calibration, ensuring long-term measurement stability. Its flexible input configuration supports both single-ended and differential measurements across seven voltage ranges, making it ideal for diverse process instrumentation applications.
Core Advantages and Technical Highlights
Ultra-High Precision Measurement:
16-bit ADC with ±0.05% basic accuracy
5µV resolution on ±50mV range
Automatic temperature compensation
<0.5µV/°C offset drift
Advanced Signal Integrity:
Programmable low-pass filtering (1Hz to 10kHz)
Simultaneous 50/60Hz noise rejection
Input overvoltage protection up to ±30V
Galvanic isolation on all channels
Intelligent Diagnostics:
Continuous channel health monitoring
Open wire detection
Overrange/underrange alarms
Watchdog timer for module status
Flexible Configuration:
Per-channel input type selection
Software-selectable sampling rates
Individual channel enable/disable
Scalable from 1 to 8 modules per controller
ABB AI835A
Typical Application Scenarios
The ABB AI835A excels in precision measurement applications:
Power Generation:
Turbine vibration monitoring (0-10V accelerometers)
Generator winding temperatures (mV-output RTDs)
Excitation system voltage/current monitoring
Oil & Gas:
Multiphase flow meter interfaces
Compressor condition monitoring
Safety system analog inputs
Pharmaceutical:
Bio-reactor parameter acquisition
Clean room pressure monitoring
Validation system data recording
Advanced Manufacturing:
Semiconductor process control
Precision weighing systems
Coating thickness measurement
Related Model Recommendations
ABB AI835B – Enhanced version with ±20mA current input capability
ABB AO835 – Matching 16-channel analog output module
ABB DI835 – 32-channel digital input module
ABB CI854 – PROFIBUS DP communication interface
ABB TB845 – Terminal base unit for AI835A
Installation, Commissioning & Maintenance
Installation Best Practices:
Mount in controlled environment (<60°C ambient)
Maintain 25mm side clearance for ventilation
Use individually shielded, twisted pair cables
Implement star-point grounding scheme
Configuration Procedure:
Set hardware address via rotary switch
Define channel parameters in Control Builder
Perform auto-calibration cycle
Verify noise levels via diagnostic tools
Preventive Maintenance:
Annual calibration verification
Quarterly terminal inspections
Firmware updates during planned outages
Replacement recommended after 10 years service
Service and Guarantee Commitment
ABB provides:
60-month extended warranty option
24/7 critical application support
On-site calibration services
Lifetime product support commitment
Migration path to future S800+ series
