May 27, 2026

B&R 3AM374.6 Analog Mixed Module

The 3AM374.6 is a high‑performance analog mixed module from the B&R SYSTEM 2005 series, designed for versatile analog signal processing in industrial automation. It integrates 4 analog inputs and 4 analog outputs, each configurable for voltage or current signals in groups of two, with 12‑bit resolution for both input and output channelsB& R Industrial Automation. Featuring 2500 VAC galvanic isolation between field and controller, IP20 protection, and a compact single‑slot design, it delivers stable and reliable performance in harsh industrial environments with strong electromagnetic interference and vibration. As a core multifunctional I/O component, it simplifies system design, reduces wiring complexity, and optimizes cabinet space for SYSTEM 2005‑based automation projects.

Description

B&R 3AM374.6 Analog Mixed Module

Product Introduction

Basic Information

Model: 3AM374.6
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: Analog Mixed Input/Output Module
Analog Inputs: 4 channels, configurable in 2 groups; 0–10 V DC or 0–20 mA, 12‑bit resolution
Analog Outputs: 4 channels, configurable in 2 groups; ±10 V DC or 0–20 mA, 12‑bit resolution, short‑circuit resistant
Power Supply: 5 VDC from backplane (1.5 W); 24 VDC for field (5.0 W)
Total Power Consumption: 6.5 W
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 PLC)
Certifications: CE, UL, EAC, UKCA
Installation: Standard single slot for SYSTEM 2005 racks, DIN rail mountable
Compatible Terminal Block: 3TB170.9 (screw clamp) or 3TB170.91 (push‑in), sold separatelyB& R Industrial Automation

Function and Positioning

The 3AM374.6 functions as a flexible analog signal interface for B&R SYSTEM 2005 controllers, bridging the control system and analog field devices. It accurately acquires voltage or current signals from sensors (temperature, pressure, flow, level, speed) and converts them into 12‑bit digital data for real‑time monitoring, data logging, and closed‑loop control. Simultaneously, it converts digital control commands into voltage or current analog outputs to drive actuators such as proportional valves, frequency converters, and servo drives. The group‑based configuration allows independent signal type selection for each pair of channels, enhancing application flexibility. Positioned as a cost‑effective, space‑saving all‑in‑one solution, it reduces hardware complexity, wiring effort, and cabinet space for small‑to‑medium automation systems requiring multi‑channel analog processing.

Core Performance Parameters

Channel Configuration: 4 analog inputs (2 groups), 4 analog outputs (2 groups); voltage/current configurable per group
Resolution: 12‑bit for both inputs and outputs
Conversion Time: <1 ms for all channels; <1.5 ms with signal averaging
Basic Accuracy: ±0.05% FS (inputs); ±0.02% FS (outputs) at 25 °C
Temperature Drift: ±50 ppm/°C
Input Impedance: 2 MΩ (voltage); 100 Ω (current)
Input Protection: Overvoltage and overcurrent protection against wiring errors
Output Protection: Short‑circuit resistant, >100 mA short‑circuit current
Operating Modes: Cyclic measurement, signal averaging, software‑configurable timing (2 ms to 65,535 ms)
Status Indicators: Onboard LEDs for module status, converter activity, and group‑specific signal type
Diagnosis: Full fault detection and reporting via B&R Automation Studio
EMC Compliance: EN 61000‑6‑2, EN 61000‑6‑4
Configuration: Parameterization via B&R Automation Studio V4.x+

General Compatible Accessories

B&R SYSTEM 2005 series backplanes and multi‑slot expansion racks
SYSTEM 2005 series CPU modules and X2X bus‑compatible I/O modules
24 VDC industrial power supplies (e.g., 0PS105.1, 0PS205.1)
Shielded twisted‑pair cables for analog signal transmission
3TB170.9 (screw clamp) or 3TB170.91 (push‑in) terminal blocks for field wiring
B&R Automation Studio V4.x+ for programming, configuration, and maintenance
0–10 V / 0–20 mA compatible sensors (temperature, pressure, flow, level, speed)
±10 V / 0–20 mA controlled actuators (proportional valves, frequency converters, servo drives)B& R Industrial Automation

Applicable Equipment Fields

Factory Automation: Packaging machinery, machine tools, automotive assembly lines, general production equipment
Process Industry: Chemical, pharmaceutical, food and beverage, water treatment, papermaking, textile
Energy Sector: Power plant monitoring, renewable energy systems, energy efficiency control
Motion Control: Servo and frequency converter auxiliary control, positioning systems
Building Automation: HVAC systems, environmental monitoring, building management systems
Industrial Sites: Environments with high electromagnetic interference, vibration, and wide temperature ranges
B&R SYSTEM 2005‑based automation projects requiring integrated multi‑channel analog I/O with flexible signal configuration

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