May 27, 2026

3DM476.6 Digital Mixed Module

The 3DM476.6 is a high-density digital mixed input/output module from B&R SYSTEM 2005 series. It provides 16 digital inputs and 16 transistor outputs in a compact single-slot housing. Designed for general-purpose and high-channel-count automation applications, it features electrical isolation in groups, flexible sink/source input configuration, and fast response time. With robust EMC performance and comprehensive status diagnostics, it serves as a cost-effective and reliable I/O solution for signal acquisition and actuator control in industrial machines and production systems.

Description

3DM476.6 Digital Mixed Module

Product Introduction

Basic Information

Model: 3DM476.6
Brand: B&R (Bernecker + Rainer, ABB Group)
Series: SYSTEM 2005
Product Type: Digital Mixed Input/Output Module
Input Channels: 16 channels, 24 VDC/24 VAC, sink/source selectable
Input Filter: 1 ms hardware filter
Input Isolation: 4 electrically isolated groups (4 channels per group)
Output Channels: 16 transistor outputs, 24 VDC, 0.5 A per channel
Output Protection: Short circuit, overload, thermal protection
Connection: TB170 dedicated terminal block
Status Indicators: Channel-specific LEDs; power and fault LEDs
Power Supply: 5 VDC from backplane; 24 VDC for field devices
Protection Class: IP20
Operating Temperature: 0 °C to 60 °C
Storage Temperature: -25 °C to 70 °C
Relative Humidity: 5% to 95%, non-condensing
Certifications: CE, UL, EAC, UKCA
Installation: One standard slot on SYSTEM 2005 backplane, DIN rail mountable

Function and Positioning

The 3DM476.6 functions as a high-density bidirectional I/O interface in industrial control systems. It collects discrete signals from sensors, limit switches, and pushbuttons, converting them into logic signals for the controller. Simultaneously, it drives low-power actuators such as relays, solenoid valves, and indicator lamps. The grouped electrical isolation enhances noise immunity and safety between field circuits and the control system. Positioned as a general-purpose mixed module, it optimizes system cost and space for applications requiring a large number of digital I/O points with moderate speed and power requirements.

Core Performance Parameters

High-Density I/O: 16 inputs + 16 outputs reduce slot usage and system cost
Flexible Input Type: Sink/source selectable for compatibility with diverse 24 VDC/24 VAC sensors
Group Isolation: 4 isolated input groups minimize cross-interference and improve safety
Fast Response: 1 ms hardware input filter balances noise rejection and signal speed
Reliable Output Drive: 0.5 A per channel for direct control of low-power DC loads
Built-in Protection: Short circuit, overload, and thermal shutdown protect the module and wiring
Clear Diagnosis: LED indicators enable real-time channel status monitoring and quick fault finding
Industrial EMC: Compliant with EN 61000-6-2 for stable operation in noisy environments
Wide Environmental Range: Operates reliably across standard industrial temperature and humidity ranges
System Compatibility: Fully compatible with B&R SYSTEM 2005 CPUs, backplanes, and Automation Studio

General Compatible Accessories

B&R SYSTEM 2005 series backplane modules and power supply units
SYSTEM 2005 CPU modules for logic and motion control
TB170 dedicated terminal block for field wiring
24 VDC/24 VAC sensors: proximity, photoelectric, limit switches, and pushbuttons
Low-power DC actuators: relays, solenoid valves, indicator lamps, and small motors
Shielded twisted-pair cables for noise-free signal transmission
B&R Automation Studio for module configuration, programming, and diagnostics
DIN rail mounting hardware and standard control cabinet accessories

Applicable Equipment Fields

Factory Automation: Assembly lines, packaging machinery, and material handling systems
Industrial Machinery: Machine tools, textile machines, printing presses, and plastic processing equipment
Building Automation: HVAC systems, access control, and lighting control panels
Process Industry: Water treatment, food and beverage, and pharmaceutical production lines
Logistics: Conveyors, sorting machines, and warehouse automation equipment
General Industrial Control: Any automation system requiring high-channel-count digital I/O with moderate speed and power needs

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