Bihl+Wiedemann BWU3674 AS-i Gateway Module

Product Overview

The Bihl+Wiedemann BWU3674 is an AS-i 5 / AS-i 3 PROFINET Gateway Module with integrated Safety Monitor. It is used to connect AS-Interface field devices (sensors, actuators, safety devices) to higher-level PLC systems through PROFINET communication.

The module integrates two AS-i masters, safety functions, diagnostics, OPC UA server, REST API, and web-based configuration, making it suitable for modern industrial automation and safety control applications.

Main Specifications

• Manufacturer: Bihl+Wiedemann
• Model: BWU3674
• Product Type:
  • AS-i Gateway Module
  • AS-i 5 / AS-i 3 Master Gateway
  • Safety Monitor Module
• Communication Interface: PROFINET
• AS-i Compatibility: AS-i 5 + AS-i 3
• Number of AS-i Masters: 2
• Safety Communication: PROFIsafe + Safe Link
• Mounting: DIN rail mounting
• Protection Rating: IP20
• Installation Type: Control cabinet installation

Technical Specifications

Functions

The BWU3674 provides:

• AS-i device communication management
• PROFINET data exchange with PLC
• Safety signal processing
• AS-i fault detection
• Network diagnostics
• Configuration and maintenance via Ethernet
• Safety I/O expansion

Working principle:

AS-i Sensors / Actuators → BWU3674 Gateway → PROFINET → PLC / Safety PLC

Features & Advantages

• Original Bihl+Wiedemann AS-i gateway solution
• Supports both AS-i 5 and AS-i 3 devices
• Integrated safety monitor reduces additional hardware
• Supports PROFIsafe safety communication
• Fast AS-i cycle times for real-time applications
• Built-in diagnostics improve troubleshooting efficiency
• Supports IIoT functions through OPC UA and REST API
• Compact DIN rail installation design

Applications

Used in:

• Factory automation systems
• Automotive production lines
• Packaging machinery
• Conveyor systems
• Safety control systems
• Assembly equipment
• Industrial robot cells

Typical applications:

• Emergency stop monitoring
• Safety door monitoring
• Sensor/actuator network communication
• Distributed I/O control