EtherCAT “Compact” Bus Coupler BK1150
Link/Act In
Signal input EtherCAT
Link/Act Out
Signal output EtherCAT
I/O Run
I/O Error
Input for
power contacts
Power contacts
Bus Coupler
extended temperature range
extended shock and vibration range

BK1150 | EtherCAT “Compact” Bus Coupler

EtherCATThe BK1150 Bus Coupler connects the EtherCAT real-time Ethernet system to the modular extendable KL/KS electronic terminal blocks at fieldbus level. A unit consists of a Bus Coupler, any number of terminals from 1 to 64 (with K-bus extension: 255) and a KL9010 bus end terminal.

The Bus Coupler recognizes the connected Bus Terminals and automatically allocates them into the EtherCAT process image. It is connected to the EtherCAT network via the upper interface. The lower RJ45 socket may be used to connect further EtherCAT devices in the same strand.

The BK1150 "Compact" Bus Coupler works in an identical way to the BK1120 and supplements this series with an inexpensive DIN rail mounting coupler. The IP 20 housing of the BK1150 is around 5 mm narrower than that of the BK1120.

The Bus Terminals on the BK1150 can be parameterized via ADS by the KS2000 software; the KS2000 plug is omitted. Alternatively, the controller (PLC, IPC) can configure the Bus Terminals via PLC function blocks.

System data EtherCAT | BK1150
Number of I/O stations 65,535
Number of I/O points depending on controller
Data transfer medium Industrial Ethernet cable, screened, min. Cat.5
Max. cable length 100 m (100BASE-TX)
Data transfer rates 100 Mbit/s
Data transfer time typ. 0.01 ms in the case of 10 modules for 32 bit inputs and outputs each (without K-bus run-time)
Technical data BK1150
Number of Bus Terminals 64 (255 with K-bus extension)
Max. number of bytes fieldbus 1024 byte input and 1024 byte output
Configuration possibility via KS2000 or EtherCAT (ADS)
Bus interface 2 x RJ45
Power supply 24 V DC (-15 %/+20 %)
Input current 70 mA + (total K-bus current)/4, 500 mA max.
Starting current approx. 2.5 x continuous current
Recommended fuse ≤ 10 A
Current supply K-bus 1750 mA
Power contacts max. 24 V DC/max. 10 A
Electrical isolation 500 V (power contact/supply voltage/Ethernet)
Distance between stations 100 m (100BASE-TX)
Dimensions (W x H x D) 44 mm x 100 mm x 68 mm
Weight approx. 110 g
Operating/storage temperature -25…+60 °C/-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. class/installation pos. IP 20/variable
Approvals/markings CE, UL, ATEX
Ex marking II 3 G Ex nA IIC T4 Gc
Accessories/related products  
KS2000 configuration software for extended parameterisation
Cordsets cordsets and connectors
FC9001-0010 | FC9011 Ethernet PCI fieldbus cards
BK1120 EtherCAT “Economy plus” Bus Coupler for up to 64 Bus Terminals (255 with K-bus extension)
BK1250 EtherCAT “Compact“ Coupler between EtherCAT Terminals (E-bus) and Bus Terminals (K-bus), adapter terminal
CX8010 EtherCAT Embedded PC
EtherCAT For further EtherCAT products please see the system overview