May 27, 2026

B&R 3AI350.6 Analog Input Module

The 3AI350.6 is a high-density analog input module from B&R’s SYSTEM 2005 series, designed for precise acquisition of analog signals in industrial automation systems. It provides eight channels of ±10 V analog input with 12-bit resolution, featuring galvanic isolation between channels and the PLC backplane. As a reliable signal acquisition front-end, it delivers accurate, noise-immune data for process monitoring, closed-loop control, and system diagnostics in demanding industrial environments.

Description

B&R 3AI350.6 Analog Input Module

Product Introduction

Basic Information

Model: 3AI350.6
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: 8-Channel Analog Input Module
Input Range: ±10 VDC, single-ended
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 3AI350.6 functions as a high-precision analog signal acquisition module for SYSTEM 2005 series controllers, optimized for voltage-based sensor and transducer integration. It converts analog voltage signals from field devices into high-resolution digital data for the PLC, supporting real-time monitoring of pressure, temperature, flow, and other process variables. The galvanic isolation protects the controller from electrical noise and voltage spikes, while the 8-channel design maximizes I/O density for space-efficient system configuration. It acts as a critical link between analog field devices and digital control systems, ensuring reliable data acquisition for accurate control decisions.

Core Performance Parameters

Number of Channels: 8 single-ended analog inputs
Input Signal: ±10 VDC
Resolution: 12-bit (4096 steps)
Conversion Time: 250 µs for all channels
Basic Accuracy: ±0.25% of full scale at 20°C
Temperature Coefficient: ±50 ppm/°C
Input Impedance: >1 MΩ
Isolation Voltage: 2,500 VAC (channel to PLC backplane)
Status Indicators: LEDs for module status, converter activity, and diagnostics
Diagnostics: Module status and converter fault detection via software
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)
Analog signal cables (shielded, 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-density, high-precision analog voltage signal acquisition

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