BK5120 | CANopen Bus Coupler

BK5120 | CANopen Bus Coupler

The BK5120 Economy plus Bus Coupler connects the CAN bus system to the electronic terminal blocks, which can be extended in modular fashion. One unit consists of one Bus Coupler, any number of up to 64 terminals and one end terminal. With the K-bus extension technology, the BK5120 allows the connection of up to 255 spatially distributed Bus Terminals to one Bus Coupler.

The Bus Coupler works on the CAN protocol basis as defined in ISO 11898. In addition to network services, CANopen also determines the data allocation for automation systems applications and has established itself as an open CAN application layer. The Bus Coupler supports all types of CANopen communications and can also be used without difficulty in manufacturer-specific CAN environments due to the simple structure of this protocol definition. The firmware can be updated via the configuration interface.

Parameterizing can also be carried out using any CANopen configuration tools. For this, EDS data files are available, which describe all the setting options for the CANopen coupler. For most applications, however, no configuration is necessary, as CANopen provides practical default values for all parameters. 

Number of Bus Terminals 64 (255 with K-bus extension)

Max. number of bytes fieldbus 16 Tx/Rx PDOs

Digital peripheral signals 960 inputs/outputs

Analog peripheral signals 60 inputs/outputs

Configuration possibility via KS2000 or the controller

Number of PDOs (CANopen) 16 Tx/16 Rx

Additional CANopen features life, node guarding, emergency object, variable mapping, store/restore

Data transfer rates up to 1 Mbaud

Bus interface 1 x open style connector, 5-pin, included

Data transfer medium screened, twisted copper cable, 2 x signal, 1 x ground (recommended)

Power supply 24 V DC (-15 %/+20 %)

Input current 70 mA + (total K-bus current)/4, 500 mA max.

Starting current approx. 2.5 x continuous current

Recommended fuse ≤ 10 A

Current supply K-bus 1750 mA

Power contacts max. 24 V DC/max. 10 A

Electrical isolation 500 V (power contact/supply voltage Bus Coupler)

PDO modes synchron, cyclic, event driven, polling

Weight approx. 150 g

Operating/storage temperature -25…+60 °C/-40…+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. rating/installation pos. IP20/variable

Approvals/markings CE, UL, ATEX, IECEx, DNV GL

Ex marking ATEX: II 3 G Ex ec IIC T4 Gc

IECEx: Ex ec IIC T4 Gc

>>> Refer to technical document: