Via the K-bus extension, the Bus Coupler “Economy plus” enables the connection of up to 255 Bus Terminals. The coupler terminal KL9050 starts a further remote bus terminal block. Operation of up to 64 Bus Terminals Bus end terminal KL9010 Operation of up to 64 Bus Terminals K-bus extension via screened Industrial Ethernet cable with two RJ45 plugs (distance up to 5 m) Terminal bus extension, end terminal KL9020 Through the K-bus interconnection it is possible to connect further 30 stations (total extension 155 m). Terminal bus extension Bus Terminal 376 The Bus Couplers and Bus Terminal Controllers link the bus systems to the modular, extendable electronic terminal blocks. One unit consists of one Bus Coupler, any number of terminals between 1 and 64, and a bus end terminal. The “Economy plus” and “Compact” series support all Bus Terminals of the Beckhoff system. It is also possible to operate up to 255 Bus Terminals on this Bus Coupler series with the K-bus extension. The Bus Terminal extension allows Bus Terminals to be located in up to 31 blocks in the control cabinet or in the application. With a distance of up to 5 m between the Bus Terminal blocks, the Bus Terminal system can be used over a wider area and helps save costs. The Bus Coupler recognises the terminals to which it is connected, and performs the assignment of the inputs and outputs to the bytes of the process image automatically. The blocks with terminal bus extensions are treated as one unit by the Bus Coupler. The extension is transparent for the fieldbus and higher-level systems. The system of Bus Coupler and Bus Terminal can be extended by replacing the KL9010 end terminal with the KL9020 extension. The KL9020 makes the K-bus signals available in an RJ45 socket for transmission onwards via a shielded Industrial Ethernet cable. The KL9050 coupler terminal starts a further remote Bus Terminal block and provides the logical connection to the Bus Coupler via the Ethernet cable. 24 V DC, electrically isolated, for the field level can be input at this coupler terminal. The internal K-bus shares the same potential as the K-bus of the coupler. The KL9050 can be used via a second socket for the extension to the next Bus Terminal block. This Bus Terminal block starts in the same way as the one with a KL9050 coupler terminal. This coupling works at up to 31 stations. The maximum distance between two Bus Terminal blocks is 5 m and allows a total extension of 155 m. The system uses shielded Industrial Ethernet cables with two RJ45 plugs for the transmission. The cable is supplied ready-made in different lengths or can be made-to-measure for applications with conventional Ethernet tools. Data transfer is based on the interference-free and RS485 industry standard in a doublescreened cable. Operation with up to 64 Bus Terminals to one Bus Coupler with KL9010 bus end terminal Operation with up to 255 Bus Terminals to one Bus Coupler with terminal bus extension end terminal KL9020 and coupler terminal KL9050 We reserve the right to make technical changes.
Bus Coupler housing Technical data – Bus Coupler housing The Beckhoff Bus Coupler electronics can be mounted in a variety of housings. A housing has three power contacts, which, if the application requires, automatically implement a continued connection, carrying the potential of the power circuit to the next Bus Terminal. The supply voltage that is connected to the Bus Coupler spring-loaded terminals is 24 V DC. If a different voltage is required for the power contacts, the appropriate power feed terminal must be inserted after the Bus Coupler. 15 mm 18 mm 43 mm 94 mm 100 mm 100 mm 100 mm 46 mm 100 mm 47 mm 42 mm 81 mm 21 mm 49 mm 44 mm BKxxxx, BCxxxx BKxx50, BCxx50 BXxxxx LCxxxx Mechanical data BKxxxx, BCxxxx BKxx50, BCxx50 BXxxxx LCxxxx BC9191 Design form compact terminal compact terminal compact terminal compact terminal compact controller housing with signal LED housing with signal LED housing with signal LED housing with signal LED Material polycarbonate Dimensions (W x H x D) 49 mm x 100 mm x 68 mm 44 mm x 100 mm x 68 mm 81 mm x 100 mm x 89 mm (BX8000: 61 mm x 100 mm x 89 mm) 21 mm x 100 mm x 68 mm 118 mm (127 mm with end cover and DIN rail mounting) x 100 mm x 70 mm Installation on 35 mm DIN rail, conforming to EN 60715 with lock Side by side mounting double slot and key connection by means of Marking standard terminal block marking standard terminal block marking standard terminal block marking standard terminal block marking connection points labelled and numbered Vibration resistance conforms to EN 60068-2-6: 1 g (extended range: 5 g) Shock resistance conforms to EN 60068-2-27: 15 g, 11 ms (extended range: 25 g, 6 ms); 1000 shocks per direction, 3 axes EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4 Bus Terminal 377 Connection BKxxxx, BCxxxx BKxx50, BCxx50 BXxxxx LCxxxx BC9191 Wiring spring-loaded technique spring-loaded technique spring-loaded technique spring-loaded technique spring-loaded technique with pluggable wiring level Connection cross-section s*: 0.08…2.5 mm², s*: 0.08…2.5 mm², s*: 0.08…2.5 mm², s*: 0.08…2.5 mm², see documentation st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² Stripping length 8…9 mm 8…9 mm 8…9 mm 8…9 mm see documentation Fieldbus connection depending on fieldbus depending on fieldbus depending on fieldbus spring-loaded terminals RJ45 Power contacts 3 spring contacts 3 spring contacts 3 spring contacts 3 spring contacts none Current load Imax: 10 A Imax: 10 A Imax: 10 A Imax: 10 A – (125 A short-circuit) (125 A short-circuit) (125 A short-circuit) (125 A short-circuit) Nominal voltage 24 V DC 24 V DC 24 V DC 24 V DC 110…240 V AC *s: solid wire; st: stranded wire; f: with ferrule We reserve the right to make technical changes.