ABB AI950B Analog Input Module 4-Channel Temperature Input

Product Overview

The ABB AI950B is a high-performance analog input module. It is part of the S900 I/O system. This module handles temperature inputs with precision. It supports Pt100, Pt1000, and Ni100 sensors. You can use 2-wire, 3-wire, or 4-wire connections. It also reads thermocouples type B, E, J, K, L, N, R, S, T, U, and mV. Each of the 4 channels is isolated. This design ensures signal integrity in harsh environments. The module has ATEX certification for Zone 2 areas. It offers hot swap functionality for easy maintenance. You can configure it while the system runs. This reduces downtime during changes.

Application Scenarios

This module works well in process control systems. Use it in oil and gas facilities. It fits chemical plants and power generation sites. The ATEX Zone 2 rating allows use in hazardous areas. The G3 coating protects against corrosive gases. This makes it ideal for offshore platforms. It also suits pharmaceutical manufacturing lines. The module works with ABB’s 800xA system. You can also use it with other DCS platforms. Its channel isolation prevents cross-talk. This is critical for accurate temperature monitoring in reactors.

Technical Specifications

The AI950B has 4 isolated input channels. It supports Pt100 and Pt1000 in 2/3/4-wire mode. It also handles Ni100 and 0...3kOhms. Thermocouple types include B, E, J, K, L, N, R, S, T, U, and mV. It offers internal or external cold junction compensation. The module detects short circuits and breaks. It provides electrical isolation between input, bus, and power. Channels are isolated from each other. The module supports HART communication. It has a width of 20 mm and a height of 104 mm. The depth is 104 mm. It weighs only 0.135 kg. The operating temperature range is -20 °C to 60 °C. Humidity tolerance is 93% at 40 °C.

Installation & Maintenance Guide

Mount the module on a standard DIN rail. Connect the bus coupler first. Then attach the AI950B to the right. Use the correct wiring diagram for your sensor type. For Pt100, use 3-wire or 4-wire for best accuracy. For thermocouples, use the correct extension wire. Set the cold junction compensation method in the software. Use FDT/DTM tools for configuration. The module supports hot swap. You can replace it without powering down. Run auto-diagnostics to check channel health. Clean the module with a dry cloth. Do not use solvents.

Packing List

1 x ABB AI950B Analog Input Module
1 x Product documentation leaflet
1 x Bus connector (if ordered separately)