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Article No. BK3150

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.

System dataPROFIBUS | BK3150
Number of I/O stations100 with repeater
Number of I/O pointsapprox. 6,000, depending on the master
Data transfer mediumshielded copper cable, 2 x 0.25 mm²
Max. cable length1,200 m 1,000 m 400 m 200 m 100 m
Data transfer rates9.6/19.2/93.75 kbaud 187.5 kbaud 500 kbaud 1,500 kbaud …3, 6, 12 Mbaud

Technical dataBK3150
Number of Bus Terminals64 (255 with K-bus extension)
Max. number of bytes fieldbus128 byte input and 128 byte output
Data transfer ratesautomatic detection up to 12 Mbaud
Bus interface1 x D-sub 9-pin socket with shielding
Power supply24 V DC (-15 %/+20 %)
Input current70 mA + (total K-bus current)/4, 500 mA max.
Current supply K-bus1750 mA
Power contactsmax. 24 V DC/max. 10 A
Electrical isolation500 V (power contact/supply voltage/fieldbus)
Weightapprox. 100 g
Operating/storage temperature-25…+60 °C/-40…+85 °C
Relative humidity95 %, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos.IP 20/variable
Approvals/markingsCE, UL, ATEX
Ex markingII 3 G Ex nA IIC T4 Gc
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