Homag 4-086-05-0628 (4086050628) Beckhoff BK1250 EtherCAT and Bus Terminal Coupler
The BK1250 is a Bus Coupler in a terminal housing for mixed use of EtherCAT Terminals and standard Bus Terminals in a bus station. Up to 64 Bus Terminals and one bus end terminal can be connected to a BK1250. The process image of the EtherCAT system is assigned automatically. Up to 255 Bus Terminals can be connected via the K-Bus extension.
It is widely used in Homag machines. Homag part number 4-086-05-0628 (4086050628).
mixed use of EtherCAT Terminals and Bus Terminals
The system and field supply, each 24 V DC, is provided directly at the BK1250
Technical data for BK1250:
Number of Bus Terminals
64 (255 with K-bus extension)
Max. number of bytes fieldbus
1024 byte input and 1024 byte output
Digital peripheral signals
Analog peripheral signals
via KS2000 or EtherCAT (ADS)
Data transfer rates
via E-bus contacts
24 V DC (-15 %/+20 %)
70 mA + (total K-bus current)/4, 200 mA max.
approx. 2.5 x continuous current
≤ 10 A
Current supply K-bus
max. 24 V DC/max. 10 A
500 V (power contact/supply voltage/Ethernet)
approx. 55 g
-25…+60 °C/-40…+85 °C
95 %, no condensation
conforms to EN 60068-2-6/EN 60068-2-27
conforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.
CE, UL, ATEX
II 3 G Ex nA IIC T4 Gc
There are other BK series EtherCAT couplers:
EtherCAT Couplers K-bus
Bus Coupler (Economy plus)
Bus Coupler (Compact)
E-bus to K-bus interface
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