Product Overview
The ABB AI835 (3BSE008520R1) is an industrial analog input module designed for precise temperature and millivolt signal acquisition in advanced automation systems. As part of the ABB S800 I/O family, this module provides reliable data collection from field sensors and converts analog signals into digital information for processing by industrial controllers.
The AI835 module is primarily used for thermocouple and low-level millivolt signal measurement, making it suitable for temperature monitoring and process control applications. Its multi-channel architecture enables several sensors to be connected simultaneously, helping improve system efficiency and reduce hardware requirements within industrial control cabinets.
With its compact structure, industrial-grade electronic components, and high-accuracy signal conversion capability, the AI835 module supports stable operation in demanding environments such as power plants, manufacturing facilities, and chemical processing systems.
Product Parameters
| Parameter | Specification |
|---|---|
| Product Name | Analog Input Module |
| Model | AI835 |
| Order Number | 3BSE008520R1 |
| Manufacturer | ABB |
| Series | S800 I/O |
| Input Channels | 8 differential channels |
| Signal Type | Thermocouple and mV signals |
| Input Range | Low-level millivolt input |
| A/D Conversion | High-resolution analog-to-digital conversion |
| Power Supply | 24 V DC via module bus |
| Mounting Type | DIN rail or I/O rack installation |
| Operating Temperature | −20°C to +60°C |
| Storage Temperature | −40°C to +85°C |
| Dimensions | Approx. 102 × 45 × 119 mm |
| Weight | Approx. 0.2 kg |
Product Datasheet
| Datasheet Item | Description |
|---|---|
| Module Type | Thermocouple / mV Analog Input Module |
| Number of Channels | 8 |
| Measurement Method | Differential signal measurement |
| Signal Conditioning | Integrated filtering and amplification |
| Isolation | Electrical isolation between field signals and system bus |
| Data Conversion | High-precision digital conversion |
| Diagnostics | Built-in module and channel diagnostics |
| System Integration | Compatible with ABB S800 I/O architecture |
| Mounting Position | Installed within automation control racks |
| Cooling Method | Passive air cooling |
Country of Origin
The ABB AI835 (3BSE008520R1) module is produced within ABB’s global industrial automation manufacturing network. ABB maintains strict engineering and quality control standards across its production facilities to ensure consistent performance and reliability for automation equipment used in critical industrial processes.
Each module is tested for electrical performance, environmental tolerance, and signal accuracy before delivery to ensure dependable operation in industrial control systems.
Technical Description
High-Accuracy Signal Measurement
The AI835 module is designed to collect low-level analog signals from thermocouples and convert them into digital data for the control system. Its internal signal conditioning circuits help maintain measurement accuracy even when dealing with small voltage variations.
Multi-Channel Input Capability
With eight independent input channels, the module allows multiple sensors to be monitored simultaneously. This helps reduce the number of modules required in large automation systems.
Stable Industrial Performance
The module is designed with robust electronic components and protective circuit architecture. This ensures reliable operation in industrial environments that may include electrical noise, temperature variations, and mechanical vibration.
System Integration
The AI835 integrates seamlessly with ABB automation systems through the S800 I/O infrastructure. It communicates measurement data to the control processor where it can be used for process monitoring, safety logic, or operational optimization.
Maintenance and Service
The modular design simplifies installation and replacement. Maintenance generally involves routine inspection of wiring connections and ensuring that environmental conditions remain within recommended limits.
Installation and Operation Notes
Power Disconnection
Always turn off the system power before installing or removing the module.
Correct Sensor Wiring
Ensure thermocouple polarity and wiring connections are correctly configured to maintain measurement accuracy.
Shielding and Grounding
Use shielded cables and proper grounding practices to minimize signal interference.
Secure Mounting
Install the module firmly on the I/O rack to prevent vibration or connector misalignment.
Routine Inspection
Regularly check connectors, wiring terminals, and surrounding equipment to maintain stable operation.
Frequently Asked Questions (FAQ)
Q1: What is the main function of the AI835 module?
The AI835 module collects thermocouple and millivolt signals from field sensors and converts them into digital values for industrial control systems.
Q2: How many sensors can be connected to this module?
The module supports 8 independent analog input channels, allowing up to eight sensors to be connected.
Q3: What type of signals does the module measure?
It is designed to measure thermocouple temperature signals and low-level millivolt signals.
Q4: Where is the module typically installed?
It is installed in industrial control cabinets or automation racks as part of an ABB S800 I/O system.
Q5: Does the module require regular calibration?
Routine system maintenance may include calibration checks depending on the accuracy requirements of the application.
