The “Compact” Bus Coupler BK3150 for PROFIBUS extends the Beckhoff Bus Terminal system by a cost-optimized version in a compact housing. Up to 64 Bus Terminals are supported; with the terminal bus extension, up to 255 Bus Terminals can be connected. The PROFIBUS Bus Coupler offers automatic baud rate detection up to 12 Mbaud and two address selection switches for address assignment. For the fieldbus connection, a D-sub 9-pin socket for the ZS1031-3000 or ZB3100 PROFIBUS connectors is available.Technical DataNumber of Bus Terminals: 64 (255 with K-bus extension)Max. number of bytes fieldbus: 128 byte input and 128 byte outputData transfer rates: automatic detection up to 12 MbaudBus interface: 1 x D-sub 9-pin socket with shieldingPower supply: 24 V DC (-15 %/+20 %)Input current: 70 mA + (total K-bus current)/4, 500 mA max.Current supply K-bus: 1750 mAPower contacts: max. 24 V DC/max. 10 AElectrical isolation: 500 V (power contact/supply voltage/fieldbus)Weight: approx. 100 gOperating/storage temperature: -25…+60 °C/-40…+85 °CRelative humidity: 95 %, no condensationVibration/shock resistance: conforms to EN 60068-2-6/EN 60068-2-27EMC immunity/emission: conforms to EN 61000-6-2/EN 61000-6-4Protect. class/installation pos.: IP 20/variableApprovals/markings: CE, UL, ATEXEx marking: II 3 G Ex nA IIC T4 Gc
