Item details
Beckhoff Interbus Coupler BK4000
The BK4000 Interbus couplers connect the Interbus bus system to the modularly expandable electronic terminal blocks. A unit consists of an Interbus coupler, any number of 1 to 64 terminals, and an end terminal.
System data
Number of I/O stations 256
Number of I/O points 4,096
Transmission medium LiYCY 3 x 2 x 0.22 mm²
Max. cable length max. 400 m
Transmission rates 500 kBaud
Transmission time approx. 1 ms for 10 modules with 32-bit inputs/outputs each
Technical data
Number of bus terminals 64
Max. byte count fieldbus 64-byte input and 64-byte output
Digital peripheral signals 512 inputs/outputs
Analog peripheral signals 32 inputs/outputs
Configuration option via KS2000
Transmission rates 500 kBaud
Bus interface 2 x D-sub, 9-pin, plug and socket with shielding and vibration protection
Power supply 24 V DC (-15 %/+20 %)
Input current 70 mA + (total K-bus current)/4, 500 mA max.
Inrush current 2.5 x continuous current
Recommended fuse ≤ 10 A
K-bus power supply 1750 mA
Power contacts 24 V DC max./10 A max.
Potential isolation 500 V (power contact/supply voltage/fieldbus)
Weight approx. 170 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 % non-condensing
Vibration/shock resistance according to EN 60068-2-6/EN 60068-2-27
EMC immunity/-emission according to EN 61000-6-2/EN 61000-6-4
Degree of protection/installation position IP 20/any
Approvals CE, UL, Ex
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