Product Description: AT664 (7AT664.70-1) Thermocouple Input Module

1. General Description

2. Key Features

• 4 Isolated Thermocouple Inputs: Four independent, galvanically isolated input channels for simultaneous temperature monitoring.

• Wide Thermocouple Support: Compatible with all standard types: K, J, T, E, R, S, B, N.

• Ultra-Wide Temperature Range: Measures from -270°C to +1372°C (-454°F to +2502°F).

• High-Accuracy Signal Conditioning: Built-in amplification, filtering, cold-junction compensation (CJC), and open-circuit detection.

• Full Galvanic Isolation: 500 VDC channel-to-bus isolation for noise immunity and system protection.

• Modular Screw-In Design: Compact, hot-swappable form factor for easy installation and maintenance.

• Diagnostics: Integrated LED status indicators and open-circuit fault detection.

• System Compatibility: Seamless integration with B&R X20/2003 systems via the backplane bus.

• Industrial Robustness: Designed for continuous operation in harsh industrial conditions.

• Certifications: CE, cULus, EAC, UKCA compliant.

3. Technical Specifications

Input & Measurement Data

• Number of Inputs: 4 differential thermocouple inputs

• Supported Types: K, J, T, E, R, S, B, N

• Temperature Range:

  • Type B: 100°C to +1820°C

  • Type R/S: 0°C to +1760°C

  • Type K/N: -200°C to +1372°C

  • Type J: -210°C to +1200°C

  • Type T: -270°C to +400°C

  • Type E: -270°C to +1000°C

• Input Signal Range: ±60 mV

• Resolution: 16-bit (±0.1°C typical)

• Accuracy: ±0.5°C (typical, excluding sensor error)

• Cold-Junction Compensation (CJC): Integrated, automatic

• Open-Circuit Detection: Yes, per channel

• Update Time: <100 ms per channel

Electrical Data

• Supply Voltage: 24 VDC (±10%)

• Power Consumption: Approx. 1.2 W

• Isolation Voltage: 500 VDC (channel-to-backplane)

• Input Impedance: >10 MΩ

Mechanical Data

• Dimensions (W x H x D): 22.5 mm x 114 mm x 102 mm

• Weight: Approx. 110 g

• Mounting: Screw-in module onto X20/2003 backplane

• Connection: Screw terminals (16-point, 2.5 mm²)

• Protection Rating: IP20 (front)

Environmental Data

• Operating Temperature: -25°C to +60°C

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5 – 95% RH, non-condensing

• Vibration Resistance: IEC 60068-2-6 (10–500 Hz, 1 g)

• Shock Resistance: IEC 60068-2-27 (15 g, 11 ms)

• Pollution Degree: 2

• Overvoltage Category: II

Safety & Certifications

• Protection: Galvanic isolation, overvoltage protection

• Standards: EN 61010, EN 61131-2

• Certifications: CE, cULus (E180196), EAC, UKCA

4. Typical Applications

• Process Automation: Furnaces, boilers, reactors, heat exchangers

• Metallurgy: Smelting, forging, heat treatment, kilns

• Plastics & Rubber: Injection molding, extrusion, curing

• Food & Beverage: Ovens, dryers, pasteurization

• Pharmaceuticals: Sterilizers, incubators, controlled environments

• Semiconductor: Wafer processing, thermal processing

• Energy: Power generation, engine test stands, thermal systems

• Environmental Chambers: Climatic test equipment

5. Configuration & Integration

• Software Setup: Configurable via B&R Automation Studio™; select thermocouple type, filtering, and scaling.

• Status Indicators:

  • Green LED: Module power/ready

  • Red LED: Fault (open circuit, overrange)

• Hot-Swappable: Safe removal/insertion under power (system-dependent).

• Data Interface: Direct communication to B&R CPU via the X20 backplane.

6. Ordering Information

• Base Part Number: 7AT664.70-1

• Standard Package: 1 x AT664 thermocouple input module (4-channel)

• Warranty: Standard 1-year manufacturer warranty