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BK4500 | Контроллер ввода-вывода Interbus с волоконно-оптическим соединением и возможностью подключения до 64 модулей

The particular feature for the BK4500 Bus Coupler is its fibre optic connection. Its functions correspond to those of the BK4000 Bus Coupler in relation to the Bus Terminals and the fieldbus properties. The fibre optics mean that the transmission is particularly safe from interference, and has absolute electrical isolation.

After a conversion from copper cable to fibre optic the BK4500 Bus Coupler can be used at any location in the ring. An RS422 or fibre optic converter can be plugged into both of the interfaces of the BK4000 Bus Coupler. The interfaces on the Bus Coupler provide the necessary 5 V voltage. If the BK4500 is the last slave in the fibre optic ring, the signal relay switch must be switched on.

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

The BK4500 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. The controller automatically sets the required setting on power up. This functionality is achievable through the use of the KS2000 software.

The Interbus coupler works with the protocol chip SUPI3 and supports the extended diagnostics of the Interbus master. Byte-by-byte addressing in the master is supported as from generation G4.

System data Interbus | BK4500
Number of I/O stations 256
Number of I/O points 4,096
Data transfer medium APF (plastic) fibre (1,000 µm)
Distance between stations 1 m…40 m
Data transfer rates 500 kbaud
Data transfer time approx. 1 ms in the case of 10 modules for 32 bit input and output each
Topology ring
Implementation double fibre optic ring
Fibre optic/copper converter RS422/fibre optic plug

Technical data BK4500
Number of Bus Terminals 64
Max. number of bytes fieldbus 64 byte input and 64 byte output
Digital peripheral signals 512 inputs/outputs
Analog peripheral signals 32 inputs/outputs
Configuration possibility via KS2000
Fibre optic connector F-SMA
Bus interface 2 x 2 FSMA plugs
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/fieldbus)
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 60068-2-27/29
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals CE, UL, Ex

KS2000 configuration software for extended parameterisation
Cordsets cordsets and connectors

Ordering information Description
BK4500 Interbus Bus Coupler with fibre optic connection for up to 64 Bus Terminals
BK4000 Interbus Bus Coupler for up to 64 Bus Terminals
BK4010 Interbus Bus Coupler for up to 64 digital Bus Terminals
BK4020 Interbus “Economy plus” Bus Coupler for up to 64 Bus Terminals (255 with K-bus extension)
BC4000 Interbus Bus Terminal Controller

Interbus For further Interbus products please see the system overview.