B&R 7AT664.70 Thermocouple Analog Input Module

Technical Specifications

Model:7AT664.70

Brand:B&R

Product Type:Series2003 screw‑in thermocouple temperature acquisition module

Applicable System:B&R Automation Studio,Series2003 CPU system,furnace,heating equipment,oven,thermal‑treatment and temperature‑monitoring process

Input Channels:4 independent thermocouple input channels

Supported TC Types:J,K,B,E,N,R,S,T type thermocouple,software channel‑wise selection

Measuring Range:‑270 °C ~ +1372 °C(depends on thermocouple type)

Compensation:Built‑in cold‑junction compensation for reference‑junction temperature correction

Noise Suppression:50Hz interference suppression for industrial power‑grid environment

Isolation:Galvanic isolation between field sensor side and controller backplane

Diagnostic:Open‑circuit detection for thermocouple wire breakage

Power supply:Power supplied via Series2003 backplane,24VDC SELV

Terminal:Terminal block 7TB712.9 / 7TB712.91 ordered separately

Installation:Screw‑in plug‑in onto Series2003 base holder

Dimension:120mm34mm23mm

Weight:0.13kg

Degree of protection:IP20

Certification:CE,cULus,UKCA,Class I Div2 hazardous‑location certification

Working temperature:‑20℃ ~ +60℃

Storage temperature:‑40℃ ~ +85℃

Relative humidity:5‑95% non‑condensing,pollution degree 2

Built‑in function:Collect weak millivolt signals from multiple thermocouple sensors. Integrated cold‑junction compensation eliminates reference‑junction error. Converts thermocouple signals into digital temperature values for PLC processing. Open‑circuit diagnosis quickly detects broken thermocouple wiring. Galvanic isolation improves anti‑interference performance under noisy industrial site.

Product Brief

7AT664.70 is B&R Series2003 four‑channel thermocouple analog input module. It supports multiple common thermocouple types, each channel can be independently configured via software.

Built‑in cold‑junction compensation function ensures accurate temperature reading without external compensation box. Open‑circuit monitoring function can alarm when thermocouple wire breaks, convenient for field troubleshooting. Screw‑in plug‑in mechanical structure allows quick installation and replacement on Series2003 backplane base unit. Galvanic isolation reduces ground‑loop interference in multi‑point temperature measurement systems.

This is legacy EOL discontinued spare part,widely used for maintenance of old‑generation heating furnace,oven and thermal‑treatment automation lines. Before purchase,please confirm Series2003 base holder compatibility and thermocouple type matching. ESD anti‑static protection shall be performed during installation,hot‑swap under powered‑on state is prohibited. Terminal block must be purchased separately.