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BK7000 | ControlNet Bus Coupler for up to 64 Bus Terminals

The Bus Coupler BK7000 connects the ControlNet bus system with the electronic terminal blocks, which can be extended in modular fashion. One unit consists of one Bus Coupler, any number from 1 to 64 terminals and one end terminal.

The Bus Coupler recognises the connected terminals and automatically generates the affiliations of the inputs/outputs to the bytes of the process image. The first input/output signal is inserted in the first bit of one word (LSB), beginning from the left. The Bus Coupler inserts further signals in this word. Inputs and outputs are clearly separated. The Bus Coupler automatically begins a further word if the number of inputs or outputs exceeds 16 bits.

ControlNet has been an open fieldbus system since 1997. The ControlNet system has a bus structure, and up to 99 stations can be operated in one system. Transmission speed is 5 Mbit/s, and coax cables are used as the data transfer medium. The ControlNet protocol allows both cyclic and non cyclic data to be exchanged via the bus without cross-influence between them. The Bus Coupler BK7000 supports the use of redundant bus cables and has an integrated network access port (NAP) for the direct connecting of ControlNet tools.

Complex signal processing for analog I/Os, position measurement, …

The BK7000 Bus Coupler supports the operation of all Bus Terminals. As far as the user is concerned, handling of the analog inputs/outputs is not different to other series. The information is available in the process image of the controller for processing in the form of a byte array.

The analog and multi-functional Bus Terminals can be adapted to each specific application using the KS2000 configuration set. Depending on the type, the analog Bus Terminals' registers contain temperature ranges, gain values and linearisation characteristics. With the KS2000, the required parameters can be set on a PC. The Bus Terminals store settings permanently and in a fail-safe manner.

Optionally, the Bus Terminals can also be controlled by the control system. Via function blocks (FBs), the programmable logic controller (PLC) or the Industrial PC (IPC) handles configuration of the complete periphery during the start-up phase. If required, the controller can upload the decentrally created configuration data in order to centrally manage and store this data. Therefore, new adjustments are not necessary in the event of replacement of a Bus Terminal.

 

Technical data  
Number of I/O stations 99 (per link)
Number of I/O points depending on controller
Data transfer medium coax cable RG-6, optionally redundant
Max. cable length 250…1,000 m per segment
Data transfer rates 5 Mbaud

 

 

Technical data  
Number of Bus Terminals 64
Max. number of bytes fieldbus 512 byte input and 512 byte output
Digital peripheral signals 512 inputs/outputs
Analog peripheral signals 256 inputs/outputs
Configuration possibility via KS2000
Data transfer rates 5 Mbaud
Bus interface 2 x BNC female connector + NAP
Power supply 24 V DC (-15 %/+20 %)
Input current 70 mA + (total K-bus current)/4, 500 mA max.
Starting current 2.5 x continuous current
Recommended fuse ≤ 10 A
Current supply K-bus 1,750 mA
Power contacts 24 V DC max./10 A max.
Electrical isolation 500 V (power contact/supply voltage/K-bus)
Weight approx. 170 g
Operating/storage temperature 0…+55 °C/-25…+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 CE, UL, Ex

 

 

Accessories  
KS2000 configuration software for extended parameterisation
Cordsets cordsets and connectors

 

 

Ordering information  
BK7000 ControlNet Bus Coupler for up to 64 Bus Terminals

 

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