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Bihl+Wiedemann BWU1777
Bihl+Wiedemann BWU1777
Bihl+Wiedemann BWU1777
· Product image is representative; revision or series may vary. Contact us to request a specific version.

BWU1777

ASi-3 PROFIBUS Gateway

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Technical specifications for BWU1777

  • Product Model
    BWU1777
  • Product Parameters
    ASi-3 PROFIBUS Gateway
  • Tariff Code
    8537101190
  • Country of origin
    USA
  • Place of shipment
    Xiamen, China
  • In stock
    1 unit
  • Estimated Shipping Size
    7.5x8.2x12.5cm
  • Manufacturer
    Bihl+Wiedemann
  • Weight
    0.55 kg
  • Type
    PROFIBUS ASi
  • Model
    Gateway
  • Protection rating
    IP20
  • Fieldbus interface
    PROFIBUS
  • Number of ASi networks, number of ASi Master
    2 ASi networks, 2 ASi-3 Masters
  • Integrated decoupling, ASi current measurement in the gateway
    yes, max. 4 A/ASi network
  • Diagnostic and configuration interface
    RS 232

Description

The Bihl+Wiedemann BWU1777 is an ASi-3 PROFIBUS Gateway housed in a stainless steel enclosure for DIN-rail mounting in industrial automation environments. It integrates two ASi-3 masters managing two independent AS-i networks, while requiring only one power supply to feed both AS-i circuits — a configuration that reduces wiring complexity and component count.

The gateway implements the PROFIBUS DP protocol according to IEC 61158 and IEC 61784-1, supporting baud rates from 9.6 kBaud to 12 MBaud with automatic detection. It maps all connected AS-i slaves as I/O data into the PROFIBUS process image, enabling complete diagnosis and configuration through the PROFIBUS DP master. A chip card slot is provided for storing configuration data, facilitating fast device replacement without reconfiguration.

The unit features an RS232 diagnostic interface for direct access to AS-i master functions using Bihl+Wiedemann proprietary software (AS-i Control Tools, art. no. BW2902). An LCD display presents AS-i slave addresses and error messages in plain text, complemented by eight status LEDs indicating power, PROFIBUS communication, AS-i voltage, configuration mode, and error states.

Information

Overview Manuals Technical notes Product Applications Electrical Wiring

Features:

  • Dual ASi-3 Master with Single Power Supply
  • PROFIBUS DP Interface with Auto-Baud Detection
  • RS232 Diagnostic & Configuration Interface
  • Comprehensive ASi Network Diagnostics
  • Stainless Steel Housing for Industrial Environments
The Bihl+Wiedemann BWU1777 is an ASi-3 PROFIBUS Gateway in Stainless Steel manufactured by Bihl+Wiedemann GmbH as part of their comprehensive AS-Interface (ASi) master/gateway portfolio. It serves as the critical communication bridge between AS-Interface (ASi) sensor/actuator networks at the field level and PROFIBUS DP industrial fieldbus systems at the control level, enabling seamless integration of low-cost, decentralized I/O into higher-level automation architectures.

The BWU1777 is specifically configured as a Double Master gateway, meaning it contains two independent ASi-3 master controllers capable of managing two separate ASi networks simultaneously. Both networks are powered from a single integrated power supply with built-in data decoupling, supporting up to 4 A per ASi circuit (max. 8 A total).

The BWU1777 Bihl+Wiedemann ASi-3 PROFIBUS Gateway may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bihl+Wiedemann BWU1777 ASi-3 PROFIBUS Gatewa Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Local diagnostics and configuration are facilitated through an RS232 diagnostic interface accessible via a dedicated service port on the gateway front panel. Using Bihl+Wiedemann's proprietary configuration software, technicians can monitor ASi slave status, read detailed fault messages, perform addressing operations, and update gateway firmware without disturbing the PROFIBUS communication link. The gateway features a 7-segment display (or LCD menu on enhanced variants) that shows ASi slave addresses, error codes, and operational status in plain text, dramatically reducing troubleshooting time compared to cryptic LED-only indicators.
  • Material Handling & Conveyors:Controls drives & roller conveyors for long distribution lines
  • Packaging Automation:Fast deterministic I/O for multi-station packaging
  • Automated Guided Vehicles (AGVs):Sensor routing & core signals for mobile robots
  • Building Automation:HVAC dampers, smoke vents & lighting networks
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Connect the main AS-i Power Supply (e.g., a 4A or 8A module) directly to the AS-i 1 power input terminals.Do not connect an external power supply to the AS-i 2 circuit terminals; the BWU1777 internally decouples and routes power from Circuit 1 to Circuit 2.Wire the respective field networks to the standard AS-i 1 (+ / -) and AS-i 2 (+ / -) black/yellow flat cable networks.Ensure proper grounding and shield connection to the functional earth terminal to preserve the gateway’s potential-free, ground-symmetrical architecture.

Alternative Names

BWUI777 8WU1777

Technical notes

The BWU1777 supports redundant power supply operation: under normal conditions it draws power from one of the two AS-i circuits; should that power supply fail, the gateway automatically switches to the second AS-i power supply. This ensures all diagnostics functions remain available and the unaffected AS-i network continues to operate without interruption. Each AS-i circuit supports up to 8 A maximum current.The stainless steel housing is rated IP20 and designed for DIN-rail mounting. Operating temperature range is 0°C to +55°C, with storage temperatures from -25°C to +85°C. The unit conforms to EN 61000-6-2 for noise immunity and EN 61000-6-4 for emitted interference, with shock and vibration resistance per EN 61131-2.

FAQs

  • What is the BWU1777?

    +
    The Bihl+Wiedemann BWU1777 is an AS-i 3.0 PROFIBUS Gateway Unit designed to connect AS-Interface networks to a higher-level PROFIBUS DP master
  • What is the specific design and power supply setup of the BWU1777?

    +
    The BWU1777 features the version
  • What protocol does this gateway communicate with?

    +
    It is an AS-i 3.0 to PROFIBUS DP Gateway. It translates data between your AS-i field devices/sensors and your PROFIBUS-based PLC or controller.
  • Does it have built-in diagnostic and monitoring tools?

    +
    Yes. The unit features an integrated AS-i Earth Fault Detector and an AS-i Noise Detector. These systems constantly monitor line quality directly from the hardware.
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Disclaimer: Amikon Limited sells new and surplus products and develops channels for purchasing such products. Amikon Limited is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because Amikon Limited is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. Amikon Limited is not an authorized distributor, dealer, or representative of the products displayed on this website. All product names, trademarks, brands, and logos used on this website are the property of their respective owners. The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.
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