ABB AI835A Thermocouple/mV Input Module – Product Description

Overview

The ABB AI835A is an 8-channel analog input module designed for high-precision temperature measurement in industrial automation. It acquires signals from thermocouples and low-level millivolt sources, ensuring accurate process control. Moreover, its robust design allows reliable operation in harsh industrial environments.

Technical Specifications

• Model: AI835A

• Part Number: 3BSE051306R1

• Type: Analog Input Module

• System Compatibility: ABB S800 I/O, System 800xA

• Channels: 8 differential inputs

• Signal Types: Thermocouples (B, C, D, E, J, K, L, N, R, S, T, U), mV signals

• Measurement Range: –30 mV to +75 mV linear

• Resolution: 15 bits

• Cold Junction Compensation: Channel 8 configurable as CJ channel

• Open-circuit Detection: Yes

• Power Supply: 24 V DC from I/O backplane

• Dimensions (W × H × D): 27 × 127 × 73 mm

• Weight: 0.15 kg

• Mounting: DIN-rail

• Operating Temperature: –20 °C to +55 °C

• Protection Class: IP20

• Country of Origin: Sweden

• Application Areas: Industrial automation, precise temperature measurement, process control

FAQ

Q: How many channels does the AI835A support?
A: It provides 8 differential input channels for thermocouple and mV signals.

Q: Which thermocouple types are supported?
A: Types B, C, D, E, J, K, L, N, R, S, T, and U are supported.

Q: Can channel 8 be configured differently?
A: Yes, channel 8 can be configured as a Cold Junction (CJ) channel or used as a standard input.

Q: What is the resolution of measurements?
A: The module uses 15-bit A/D conversion for precise measurement.

Q: How is the module mounted?
A: It mounts on a DIN-rail for secure industrial installation.