Beckhoff BK3120 | Beckhoff Bus Terminals

BK3120 | PROFIBUS Economy plus Bus Coupler

The Economy plus version extends the existing PROFIBUS Bus Coupler series BK3xx0. The K-bus extension technology allows the connection of up to 255 spatially...

Technical Specifications

BK3120 Number of Bus Terminals 64 (255 with K-bus extension) Max. number of bytes fieldbus 128 byte input and 128 byte output Transmission rate automatic detection up to 12 Mbaud Bus interface 1 x D-sub 9-pin socket with shielding Transmission medium shielded copper cable, 2 x 0.25 mm² Power supply 24 V DC (-15%/+20%) Input current 70 mA + (total K-bus current)/4, 500 mA max. Current supply K-bus 1750 mA Power contacts max. 24 V DC/max. 10 A Electrical isolation 500 V (power contact/supply voltage/fieldbus) Weight approx. 170 g Operating temperature -25…+60°C Storage temperature -40…+85°C Relative humidity 95%, no condensation Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27 EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4 Protect. rating/installation pos. IP20/variable Approvals/markings CE, CCC, UL, ATEX, IECEx, DNV, cFMus Ex marking ATEX: II 3G Ex ec IIC T4

Availability: regular delivery

Place your order before 14:00 for earliest possible shipment handover. With round-the-clock transit operated by our partnered global logistics providers, parcels reach most international destinations following routine customs processing. Normal delivery takes 2–6 business days subject to customs clearance progress.Shipping fees will be charged for all orders under USD 500, and the exact shipping cost will be determined and collected by our logistics carriers. Shipments to remote international regions will incur additional courier surcharges to offset extra cross-border transportation costs.

Factory warranty service is not applicable to this industrial control equipment, and extended warranty packages are not provided for this item.