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B&R 3AT660.6 Thermocouple Input Module

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B&R 3AT660.6 Thermocouple Input Module
May 27, 2026

B&R 3AT660.6 Thermocouple Input Module

The 3AT660.6 is a high‑performance analog thermocouple input module from the B&R SYSTEM 2005 series, designed for multi‑channel temperature measurement in industrial environments. It provides 8 input channels grouped into two isolated banks, supporting Type J, K, and L thermocouples with a wide measuring range from ‑200 °C to +1300 °C. Featuring galvanic isolation between field and control sides, along with robust EMC characteristics, the module delivers stable and accurate thermal data even under harsh electrical interference. It converts low‑level thermocouple millivolt signals into high‑resolution digital values for the PLC, serving as a reliable, cost‑effective solution for high‑channel‑count temperature monitoring and control in process and factory automation.

Description

B&R 3AT660.6 Thermocouple Input Module

Product Introduction

The 3AT660.6 is a high‑performance analog thermocouple input module from the B&R SYSTEM 2005 series, designed for multi‑channel temperature measurement in industrial environments. It provides 8 input channels grouped into two isolated banks, supporting Type J, K, and L thermocouples with a wide measuring range from ‑200 °C to +1300 °C. Featuring galvanic isolation between field and control sides, along with robust EMC characteristics, the module delivers stable and accurate thermal data even under harsh electrical interference. It converts low‑level thermocouple millivolt signals into high‑resolution digital values for the PLC, serving as a reliable, cost‑effective solution for high‑channel‑count temperature monitoring and control in process and factory automation.

Basic Information

  • Model: 3AT660.6

  • Brand: B&R (Bernecker + Rainer, ABB Group)

  • Series: SYSTEM 2005

  • Product Type: Analog Thermocouple Input Module

  • Input Channels: 8 channels, 2 galvanically isolated groups (4 channels per group)

  • Supported Sensors: Type J (Fe‑CuNi), Type K (NiCr‑Ni), Type L (FeCuNi) thermocouples

  • Measuring Range: ‑200 °C to +1300 °C (sensor‑dependent)

  • Raw Signal Range: ‑15 mV to +55 mV

  • Power Supply: 5 VDC from backplane; 24 VDC field power

  • Protection Class: IP20

  • Operating Temperature: 0 °C to +60 °C

  • Storage Temperature: ‑25 °C to +70 °C

  • Relative Humidity: 5%–95%, non‑condensing

  • Isolation Voltage: 2500 VAC (field to control)

  • Certifications: CE, UL, EAC, UKCA

  • Installation: Standard single slot for SYSTEM 2005 racks, DIN rail mountable

  • Compatible Terminal Block: 3TB170.9 (screw clamp) / 3TB170.91 (cage clamp), sold separately

Function and Positioning

The 3AT660.6 acts as the dedicated high‑density thermal interface between J/K/L thermocouples and B&R SYSTEM 2005 controllers. It captures low‑level voltage signals generated by thermocouples, performs cold‑junction compensation (internal or external), and converts the data into precise digital temperature values for the PLC. The two‑group isolation minimizes cross‑channel interference, while support for three common thermocouple types ensures broad application flexibility. Positioned as a cost‑effective, high‑channel‑count temperature input module, it is ideal for systems requiring multiple‑point thermal monitoring, data logging, or closed‑loop temperature control in process industries and general factory automation.

Core Performance Parameters

  • Sensor Types: Type J (‑200 to +750 °C), Type K (‑200 to +1300 °C), Type L (‑200 to +900 °C)

  • Number of Inputs: 8 channels, 2 isolated groups

  • Resolution: 14‑bit

  • Basic Accuracy: ±0.5% (Type J/L), ±0.8% (Type K) at 25 °C

  • Temperature Drift: ±20 ppm/°C

  • Conversion Time: <400 µs per channel

  • Common‑Mode Rejection: >85 dB at 50/60 Hz

  • Input Impedance: >10 MΩ

  • Cold‑Junction Compensation: Internal (‑20 to +80 °C) or external (‑100 to +200 °C)

  • Filter: Software‑configurable digital filter (5 Hz to 500 Hz)

  • Status Indicators: RUN LED (module status), CH LEDs (channel activity)

  • Diagnosis: Open‑circuit detection, out‑of‑range alarm, sensor fault monitoring

  • EMC Compliance: EN 61000‑6‑2, EN 61000‑6‑4

  • Configuration: Via B&R Automation Studio V4.x+

General Compatible Accessories

  • B&R SYSTEM 2005 backplanes and expansion racks

  • SYSTEM 2005 CPU modules and X2X bus‑compatible I/O modules

  • 24 VDC industrial power supplies (e.g., 0PS105.1, 0PS205.1)

  • Shielded thermocouple extension cables (Type J/K/L specific)

  • 3TB170.9 (screw clamp) / 3TB170.91 (cage clamp) terminal blocks

  • B&R Automation Studio V4.x+ for configuration and diagnostics

  • Industrial‑grade Type J, K, and L thermocouple probes

Applicable Equipment Fields

  • Process Industry: Chemical, pharmaceutical, food & beverage, water treatment, pulp & paper (multi‑point temperature monitoring)

  • Factory Automation: Plastics machinery, packaging equipment, textile machines, automotive assembly lines, metalworking

  • Energy Sector: Power plant auxiliary systems, renewable energy, HVAC, boiler and furnace control

  • Industrial Furnaces & Ovens: Thermal processing, heat treatment, kiln monitoring

  • Building Automation: Clean rooms, environmental monitoring, thermal management systems

  • Industrial Sites: Areas with electromagnetic interference, vibration, and wide temperature fluctuations

  • SYSTEM 2005‑based automation projects requiring 8‑channel J/K/L thermocouple temperature input


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