BK5250 | DeviceNet “Compact” Bus Coupler

The “Compact” Bus Coupler BK5250 for DeviceNet extends the Beckhoff Bus Terminal system by a cost-optimised 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 DeviceNet Bus Coupler offers automatic baud rate detection up to 500 kbaud and two address selection switches for address assignment. A 5-pin connector for the fieldbus connection is included in the scope of supply. Optionally, the ZS1052-3000 connector with integrated terminating resistor can be connected.

System data

DeviceNet | BK5250

Number of I/O stations

Data transfer medium

screened, twisted copper wire with power supply, 5-pin

Max. cable length

500 m

250 m

100 m

Data transfer rates

125 kbaud

250 kbaud

500 kbaud

Operating modes

bit strobe, polling, cyclic, change of state (COS)

DeviceNet type

communications adapter

Technical data	BK5250
Number of Bus Terminals	64 (255 with K-bus extension)
Max. number of bytes fieldbus	512 byte input and 512 byte output
Data transfer rates	automatic detection up to 500 kbaud
Bus interface	open style connector, 5-pin
Power supply	24 V DC (-15 %/+20 %), through bus cable 11…25 V (conforms to DeviceNet specification)
Serial interface	configuration interface
Diagnostics LED	2 x power supply, 2 x K-bus, 2 x fieldbus
Supply current K-bus	1,000 mA
Power contacts	24 V DC max./10 A max.
Electrical isolation	500 Vrms (power contact/supply voltage Bus Coupler)
Weight	approx. 100 g
Operating/storage temperature	0…+55 °C/-25…+85 °C
Vibration/shock resistance	conforms to EN 60068-2-6/EN 60068-2-27/29
EMC immunity/emission	conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos.	IP 20/variable