Bihl+Wiedemann BWU3730 Inductive Proximity Sensor

The BWU3730 Active Distributor ASi from Bihl+Wiedemann is an IP54-rated AS-Interface module that houses four digital inputs in a compact 60 × 45 × 35 mm enclosure. It supplies the sensor current from ASi or from auxiliary power (24 V or 48 V) and distributes peripheral connections through four straight 5‑pole M12 sockets, with cable lengths of 0.35 m (I1), 0.25 m (I2), 0.15 m (I3), and 0.05 m (I4). The unit provides 4 digital inputs and no digital outputs, and it uses ASi addressing with a single AB address; it can be configured for AB address, single address, or ASi-5 addressing as supported by the manufacturer. Operating voltage is 30 V DC (range 18–31.6 V DC), and maximum current consumption is 245 mA (with sensor/actuator supply) or 45 mA without sensor/actuator supply. Designed for installation in cable ducts and easy integration into ASi networks, the BWU3730 combines compact form factor with straightforward wiring through M12 interfaces and a dedicated ASi addressing interface, making it a practical choice for expanding input channels in automated systems.