KL6021 | Bus Terminal, 1-channel communication interface, serial, RS422/RS485

The KL6021 serial interface allows devices with an RS422 or RS485 interface to be connected. The device connected to the terminal communicates with the automation device via the Bus Coupler. The active communication channel operates independently of the higher-level bus system in full or half duplex mode at up to 19,200 baud. The transmission of differential signals conforms to RS422 and guarantees high immunity to interference through electrically isolated signals. 

Technology RS422/RS485

Data transfer channels TxD and RxD, full/half duplex

Data transfer rates 1200…19,200 baud; default: 9600 baud, 8 data bits, no parity and one stop bit

Bit transfer with differential signal

Line impedance 120 Ω

Cable length approx. 1000 m twisted pair

Power supply via the K-bus

Current consumption K-bus typ. 65 mA

Current consumption power contacts – (no power contacts)

Electrical isolation 500 V (K-bus/signal voltage)

Data buffer 128 bytes receive buffer, 16 bytes transmit buffer

Bit width in the process image input/output: 3 x 8 bit user data, 1 x 8 bit control/status (up to 5 x 8 bit user data are possible)

Configuration no address setting, configuration via Bus Coupler or controller

Special features high interference immunity, electrically isolated signals

Weight approx. 60 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. rating/installation pos. IP20/variable

Pluggable wiring for all KSxxxx Bus Terminals

Approvals/markings CE, UL, ATEX, IECEx

Ex marking ATEX:

II 3 G Ex nA IIC T4 Gc

IECEx:

Ex ec IIC T4 Gc 

>>> Refer to technical document: kl6021en