Description

Product Overview

The ABB AI835 is a high-performance 8-channel analog input module designed for integration into ABB’s AC 800M distributed control system(DCS).As a critical component in industrial process automation,the ABB AI835 enables precise acquisition and processing of analog field signals,making it ideal for applications requiring accurate monitoring and control of process variables such as temperature,pressure,flow,and level.

Each channel of the ABB AI835 is capable of accepting standard 4–20 mA current signals,which are commonly used in industrial instrumentation.The module features high-resolution analog-to-digital conversion,ensuring accurate signal representation and minimal measurement drift over time.Designed for use in demanding environments,the ABB AI835 offers excellent noise immunity,thermal stability,and galvanic isolation between channels and the backplane,enhancing system reliability and safety.

Part of the AC 800M I/O family,the ABB AI835 connects seamlessly with ABB controllers via the station bus,supporting both standalone and redundant system configurations.Its modular design allows for flexible system expansion and easy maintenance,making it a preferred choice for engineers in power generation,oil&gas,chemical processing,and water treatment industries.

Technical Specifications

Parameter Name Parameter Value

Product Model AI835

Manufacturer ABB

Product Type Analog Input Module

Series AC 800M I/O Module

Number of Channels 8

Signal Type 4–20 mA(current input)

Input Range 0–20 mA(configurable)

Resolution 16-bit

Accuracy±0.1%of full scale

Isolation Galvanic isolation(channel-to-channel and channel-to-backplane)

Data Update Time<100 ms for all channels

Communication Interface AC 800M Station Bus

Mounting Type DIN Rail(with terminal base)

Operating Temperature 0°C to+60°C

Storage Temperature-40°C to+85°C

Certifications CE,UL,ATEX(when used in approved configurations)

Main Features and Advantages

The ABB AI835 delivers exceptional performance and reliability in industrial signal acquisition applications.Its 8-channel design provides a high-density solution for connecting field instruments to the control system,reducing cabinet space and wiring complexity.Each channel is individually isolated,minimizing cross-talk and ground loop issues that can compromise signal integrity in electrically noisy environments.

One of the standout features of the ABB AI835 is its high accuracy and stability.With a 16-bit resolution and±0.1%accuracy,it ensures precise measurement of process variables,which is crucial for maintaining product quality and process efficiency.The module supports linearization and scaling functions within the control system,allowing direct engineering unit representation(e.g.,°C,bar,%)without additional signal conditioning.

The ABB AI835 is fully compatible with ABB’s Control Builder M engineering software,enabling easy configuration,diagnostics,and integration into the overall control strategy.It supports diagnostic functions such as wire break detection and out-of-range monitoring,providing early warnings of sensor or wiring faults.

Designed for continuous operation,the ABB AI835 operates reliably across a wide temperature range and is suitable for use in both standard and hazardous area applications when paired with appropriate intrinsic safety barriers.Its plug-in terminal block simplifies installation and replacement,minimizing downtime during maintenance.

Application Fields

The ABB AI835 is widely deployed across various industrial sectors where precise analog signal acquisition is essential.In power plants,it is used to monitor boiler pressure,turbine temperature,and feedwater flow,providing critical data for safe and efficient operation.In oil and gas facilities,the ABB AI835 connects to pressure transmitters,level sensors,and flow meters in upstream,midstream,and downstream processes.

In chemical and petrochemical plants,the ABB AI835 plays a vital role in batch control,reactor monitoring,and distillation processes,where accurate measurement of process variables directly impacts product quality and safety.It is also extensively used in water and wastewater treatment plants for monitoring pump status,tank levels,and chemical dosing systems.

The ABB AI835 is well-suited for integration into building automation systems,particularly in large industrial or commercial complexes,where it monitors HVAC parameters such as air temperature,humidity,and duct pressure.Its compatibility with the AC 800M platform makes it a key component in smart manufacturing and Industry 4.0 initiatives,enabling real-time data collection and advanced process analytics.

Related Products

ABB AI830:8-channel thermocouple input module for AC 800M,used for direct temperature measurement.

ABB AI833:8-channel RTD input module for Pt100 and Ni100 temperature sensors.

ABB AI845:8-channel analog input module with voltage and current input capability(0–10 V,4–20 mA).

ABB AO835:8-channel analog output module for 4–20 mA signal generation,complementing the ABB AI835 in control loops.

ABB DI835:16-channel digital input module for monitoring discrete signals like valve status and alarms.

ABB DO835:16-channel digital output module for controlling relays,solenoids,and indicators.

ABB CI854:Communication interface module for Profibus DP,enabling integration with field devices.

ABB PM856:AC 800M controller CPU with integrated I/O support for AI835 modules.

ABB SB801:Station bus repeater for extending AC 800M I/O network distance.

ABB TB835:Terminal base for AI835 module with spring-type or screw-type connection options.

Pre-installation preparation

Before installing the ABB AI835,ensure that the control cabinet is powered down and all safety procedures are followed.Verify that the DIN rail is securely mounted and that the environmental conditions(temperature,humidity,and dust levels)are within the specified operating range.Confirm that the correct terminal base(e.g.,TB835)is installed and wired properly,with shielded cables used for analog signals to minimize electromagnetic interference.Check that the station bus is correctly terminated and that the AC 800M controller is configured to recognize the new I/O module before inserting the ABB AI835 into the rack.

Maintenance recommendations:Regularly inspect the ABB AI835 for signs of overheating,loose wiring,or corrosion on terminal blocks.Use ABB’s diagnostic tools to monitor channel status and detect any fault conditions such as open circuits or signal saturation.Periodically verify calibration using a precision current source to ensure measurement accuracy.When replacing the ABB AI835,always power down the system and follow proper ESD precautions to protect sensitive electronics.Keeping spare modules on hand can reduce downtime during unexpected failures.

Product Guarantee

We guarantee that every ABB AI835 module we supply is genuine,fully tested,and sourced through authorized ABB distribution channels.Each ABB AI835 undergoes rigorous quality checks to ensure full compliance with ABB’s technical specifications and performance standards.We offer a comprehensive warranty and dedicated technical support to assist with configuration,integration,and troubleshooting.Whether you’re upgrading an existing AC 800M system or commissioning a new process line,the ABB AI835 is backed by our commitment to reliability,performance,and customer satisfaction.

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