BK3150 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The BK3150 is part of the BK EtherCAT Bus Couplers series from Beckhoff. It supports 256 digital and 128 analog peripheral signal inputs or outputs and has a maximum I/O byte capacity of 128 bytes. The unit features a 24 VDC power supply, IP20 protection class, and measures 100 mm high, 44 mm wide, and 68 mm deep.
Internal Product Review
The BK3150 is a Beckhoff bus coupler with an RS 485 physical basis and a 12 Mbaud baud rate. Support for 256 digital inputs/outputs and 128 analog inputs/outputs gives the unit strong signal-handling flexibility for distributed I/O. A 24 VDC power supply and IP20 protection make the coupler a dependable choice for cabinet-based industrial networks.
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Product Description:
The BK3150 is a Beckhoff bus coupler in the BK PROFIBUS Bus Couplers series. It serves as a gateway between a PROFIBUS fieldbus segment and a stack of Beckhoff I/O terminals, allowing a centralized controller to read sensors and operate devices over a single twisted-pair network. The coupler transfers process data between the fieldbus and the connected terminals during each communication cycle. Integrated power contacts and signal routing reduce the amount of separate wiring required inside an industrial control panel.
The communication interface supports a data rate of 12 Mbaud over an RS-485 physical layer. Field wiring terminates at one 9-pin D-sub plug, allowing shielded trunk cables to connect without an additional adapter. The coupler can address up to 128 analog input and output points and 256 digital input and output points. This terminal capacity occupies a maximum process image of 128 bytes, which the fieldbus controller exchanges cyclically. Internal circuitry withstands 500 V of dielectric stress between the logic and supply domains. During initial energization, the starting current reaches 2.5 times the steady-state draw, which should be considered when selecting protective devices.
The control electronics draw up to 320 mA from the system rail during continuous operation. Segregated power contacts can carry up to 10 A at a nominal 24 VDC to downstream terminal blocks. The housing measures 44 mm wide, 68 mm deep, and 100 mm high, permitting installation on a DIN rail in shallow control cabinets. Its IP20 enclosure protects against accidental finger contact with internal components but requires an external cabinet for protection from dust and moisture. The mounting area should provide sufficient clearance for the fieldbus connector, terminal stack, and attached conductors. Conductor sizes and upstream protection should be selected according to the applicable current limits and expected switching conditions.
