BECKHOFF BK7520 SERCOS CART

BECKHOFF BK7520 SERCOS KART

SERCOS II communication in industrial automation systems

Integration of digital and analog I/O in Beckhoff Bus Terminal systems

Servo drive and motion control applications

High-speed fiber optic communication for distributed control

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The BK7520 is a Bus Coupler designed for SERCOS II networks. It connects Beckhoff Bus Terminals to the SERCOS fiber optic bus system. One unit consists of a bus coupler, 1 to 64 terminals, and an end terminal. With K-Bus extension technology, up to 255 terminals can be connected. The coupler automatically detects connected terminals and maps their inputs/outputs to the process image. SERCOS is an open fieldbus system standardized under IEC 61491, widely used in drive technology. BK7520 supports data rates of 2/4/8/16 Mbaud and fiber optic transmission up to 40 m between stations.

Function: SERCOS II Bus Coupler

Supply Voltage: 24 V DC (-15%/+20%)

Supported Terminals: 64 (up to 255 with K-Bus extension)

Fieldbus Capacity: 254 word I/O (depending on master)

Digital Signals: 1,020 I/Os

Analog Signals: 254 I/Os

Data Rates: 2/4/8/16 Mbaud (via configuration switch)

Bus Interface: FSMA standard, IEC 872-2

Transmission Medium: 1,000 µm plastic fiber optic

Station Distance: 40 m

K-Bus Current: 1750 mA

Power Contacts: 24 V DC / max. 10 A

Electrical Isolation: 500 V

Operating Temperature: 0…+55 °C

Storage Temperature: -25…+85 °C

Protection Class: IP20

Weight: Approx. 170 g

Approvals: CE, UL, ATEX, IECEx

Data Sheet