May 27, 2026

B&R 3AI375.6 Analog Input Module

The 3AI375.6 is a high-performance analog input module from B&R’s SYSTEM 2005 series, designed for accurate and stable acquisition of 0–10 VDC differential analog signals in industrial automation. It provides eight input channels with 12-bit resolution and features galvanic isolation between field circuits and the PLC backplane. Optimized for high noise immunity and precision measurement, it serves as a reliable signal interface for pressure, flow, temperature, and level sensors in demanding industrial environments.

Description

B&R 3AI375.6 Analog Input Module

Product Introduction

Basic Information

Model: 3AI375.6
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: 8-Channel Analog Input Module
Input Range: 0–10 VDC, differential
Resolution: 12-bit
Power Supply: 24 VDC (field), 5 VDC (backplane)
Power Consumption: 3.5 W @ 24 VDC, 1.0 W @ 5 VDC; Total 4.5 W
Protection Class: IP20
Operating Temperature: 0°C to +60°C
Storage Temperature: -25°C to +70°C
Relative Humidity: 5% to 95%, non-condensing
Isolation: Channel-to-PLC 2,500 VAC; no channel-to-channel isolation
Certifications: CE, UKCA, cULus, EAC
Mounting: Single-width slot in SYSTEM 2005 base/expansion racks
Terminal Block: TB170 (ordered separately)

Function and Positioning

The 3AI375.6 functions as a high-precision differential analog signal acquisition module for SYSTEM 2005 series controllers. It converts 0–10 VDC differential signals from field transmitters and sensors into high-resolution digital data for the PLC, supporting real-time monitoring and closed-loop control of process variables. The differential input design minimizes common-mode noise, while galvanic isolation protects the control system from voltage spikes and electrical interference. As a key link between analog field devices and digital control systems, it ensures reliable, accurate data acquisition for stable process control.

Core Performance Parameters

Number of Channels: 8 differential analog inputs
Input Signal: 0–10 VDC
Resolution: 12-bit (4096 steps)
Conversion Time: <1 ms for all channels; <1.5 ms with averaging enabled
Basic Accuracy: ±0.1% of full scale at 25°C
Temperature Coefficient: ±50 ppm/°C
Input Impedance: 2 MΩ
Isolation Voltage: 2,500 VAC (channel to PLC backplane)
Status Indicators: LEDs for converter function and start pulse
Diagnostics: Module status via software; converter status via LED
Operating Modes: Cyclic measurement with optional averaging, direct software timing, software timing with 2–65.535 ms specification
EMC Compliance: EN 61000-6-2, EN 61000-6-4
Configuration: Via B&R Automation Studio V4.x and above

General Compatible Accessories

B&R SYSTEM 2005 series backplanes and 6/9/12/15-slot racks
B&R SYSTEM 2005 series CPU modules (CP260) and interface modules (IF260/IF060)
24 VDC industrial power supplies (0PS105.1, 0PS205.1)
Shielded analog signal cables (0G0002.00-090)
Terminal block TB170 (required for field wiring, sold separately)
B&R Automation Studio V4.x and above for programming and diagnosis
Application memory modules (2ME903.90-1) for program storage

Applicable Equipment Fields

Factory Automation: Automotive assembly lines, packaging machinery, machine tools
Process Control: Food and beverage, pharmaceutical, chemical, and water treatment plants
Energy Management: Power monitoring, renewable energy systems, and energy efficiency control
Building Automation: HVAC systems, environmental monitoring, and facility management
Motion Control: Analog sensor feedback for servo systems and frequency converters
Harsh Environments: Manufacturing workshops, high-vibration sites, and electrical noise-intensive areas
General Automation: Any SYSTEM 2005 application requiring high-precision 0–10 V differential analog input acquisition

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