ASi EtherCAT Gateways - High Availability and Ideal for Beckhoff PLC
EtherCAT Gateways with and without integrated Safety Monitor available in large quantities
You are looking for ASi gateways – with or without FSoE interface – to connect AS-Interface (ASi) to an EtherCAT control? And you want to implement functional safety without a higher-level safe control? Then you will find suitable devices from us.
For standard applications:
ASi EtherCAT Gateways without integrated Safety monitor
We recommend the "Bihl+Wiedemann's Choice" articles BWU3854, BWU4790 and BWU2720 for almost all standard applications. Here you also benefit from our new power supply generation.

BWU3854
1 ASi network, 1 ASi-5/ASi-3 Master
Integrated decoupling
Max. 4 A per ASi network
- Ethernet diagnostic
- OPC UA interface and integrated webserver for easy diagnostics and maintenance

BWU4790
1 ASi circuit, 1 ASi-5/ASi-3 Master
integrated decoupling
max. 8 A per ASi circuit
- Ethernet diagnostic
- OPC UA interface and integrated webserver for easy diagnostics and maintenance

BWU2720
2 ASi networks, 2 ASi-3 Masters
Integrated decoupling
Max. 4 A per ASi network
Ethernet diagnostic
For Safety applications:
ASi-3 EtherCAT Gateways with integrated Safety Monitor
For applications with functional safety without higher-level safe control, we recommend our ASi EtherCAT gateways with integrated safety monitor. They are available with 1 ASi network or 2 ASi networks.
For Safety over EtherCAT applications:
ASi-5/ASi-3 Safety over EtherCAT Gateways
For applications in which Safety over EtherCAT (FSoE) devices are to be integrated without a higher-level safety controller, we recommend our ASi-5 Safety over EtherCAT Gateways. With the integrated FSoE master function, for example, up to 32 FSoE drives can be safely switched off directly.

BWU3583
- 1 ASi network, 1 ASi-5/ASi-3 Master
- Integrated decoupling
- Max. 4 A per ASi network
- Ethernet diagnostic
- Safety communication via FSoE + Safe Link

BWU3858
- 2 ASi networks, 2 ASi-5/ASi-3 Masters
- Integrated decoupling
- Max. 4 A per ASi network
- Ethernet diagnostic
- Safety communication via FSoE + Safe Link