The Economy-plus bus coupler BK2020 connects the Lightbus bus system with the modularly expandable electronic terminal blocks. A unit consists of a bus coupler, any number of 1 to 64 terminals, and a bus end terminal. The BK2020 allows, in conjunction with the K-bus extension, the connection of up to 255 distributed bus terminals to a bus coupler. The Economy-plus series supports all bus terminals of the Beckhoff system and can thus process 1020 digital signals and 128 analog input and output channels per slave in full expansion. The bus coupler detects the connected terminals and automatically assigns the inputs/outputs to the bytes of the process image. The first input/output signal is inserted, starting from the left, into the first bit of a byte (LSB). The bus coupler arranges further signals in the byte. A clear separation of inputs and outputs is maintained. If the number of inputs or outputs is greater than 8 bits, the bus coupler automatically starts another byte. The Lightbus system is a fast and secure serial fieldbus system. The Lightbus has a ring structure; up to 254 stations can be operated in a ring. Inexpensive and easy-to-process standard fiber optic technology is used for data transmission. Through an optimized, efficient telegram structure, the Lightbus achieves a very high user data transmission rate. For the exchange of 32-bit information, 25 µs transmission time is required. Due to the fast access method of the Lightbus, it is possible to specifically access the peripheral data and only read or write the desired data. The data is exchanged with the desired priorities without producing additional overhead. Article from plant decommissioning.
Number of bus terminals 64 (255 with K-bus extension) Max byte number fieldbus 512-byte input and 512-byte output Digital peripheral signals 1,020 inputs/outputs Analog peripheral signals 128 inputs/outputs Configuration option via KS2000 or the controller Transmission rates 2.5 MBaud Bus interface 2 x fiber optic standard connector Z1000 (plastic fiber), Z1010 (HCS fiber) Transmission medium Fiber optic: APF (plastic) fiber (1,000 µm) or HCS fiber (200 µm) Power supply 24 V DC (-15%/+20%) Input current 70 mA + (total K-bus current)/4, 500mA max. Inrush current approx. 2.5 x continuous current Recommended pre-fuse ≤ 10 A K-bus power supply 1750 mA Power contacts max 24 V DC/max 10 A Potential separation 500 V (power contact/supply voltage) Length between stations 45 m APF fiber, 300 m HCS fiber Weight approx. 150 g Operating/storage temperature 0…+55 °C/-25…+85 °C Relative humidity 95% without condensation Vibration/shock resistance according to EN 60068-2-6/EN 60068-2-27 EMC immunity/emission according to EN 61000-6-2/EN 61000-6-4 Protection class/installation position IP20/any Approvals/markings CE, UL, ATEX, IECEx Ex marking ATEX: II 3 G Ex nA IIC T4 Gc IECEx: Ex ec IIC T4 Gc
| Condition | Used |
| Age rating | No age restriction |
| Model | BK2020 |
| Manufacturer | Beckhoff Automation GmbH |
| Content | 1 piece |
| Weight | 300 g |
| Item ID | 1234589005 |
| Item ID | 1234589005 |
Beckhoff Automation GmbH
Beckhoff BK2020 Bus Coupler Lightbus Coupler
Item number VN-23473
EAN
Condition Used
Available quantity
${ $store.getters.currentItemVariation.stock.net }
EUR 71.95
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Content
1 piece
Unit price
EUR 71.95 / piece
immediately available
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