C6920-1091-0040 by Beckhoff

The C6920-1091-0040 is an industrial PC manufactured by Beckhoff as part of the C6 Industrial PC Units series. It operates as a cabinet-mounted control platform that runs real-time automation tasks, handles human-machine interfaces, and exchanges plant data with higher-level networks. By combining processing power, storage, and multiple communication ports in one enclosure, the device allows machine builders to manage motion axes, safety loops, and field I/O from a single hardware node.

The unit accepts a supply input of 24 VDC, so it can be powered directly from standard control-cabinet power rails. The feed terminals support a continuous current of 16 A, providing capacity for the computer and connected peripherals. Thermal management is provided by two cooling fans, which maintain consistent airflow through the chassis. During transport or installation, the housing withstands shocks of 5 G for 30 ms, helping protect internal boards and drives. Two RJ45 connectors conform to the 10/100/1000BASE-T standard, providing gigabit bandwidth for PLC, HMI, and network traffic. Four USB 2.0 ports accommodate service tools or data storage devices, while a single DVI-I socket connects to a local industrial monitor.

Conductors up to 1.5 mm² fit the supply terminals, and the eight-pole power plug is keyed to ensure correct alignment during installation. A 9-pin D-Sub on the front panel provides a dedicated fieldbus link, while an additional 9-pin port offers an RS-232 service channel for legacy equipment. Operation is permitted at ambient humidity levels up to 95% non-condensing, and the aluminum enclosure has an IP20 ingress protection rating. The digital status output can switch loads up to 0.5 A, allowing direct connection of indicator lamps or small relays without external drivers. The cabinet-mounted enclosure places its power, communication, display, and service connections near other automation equipment within a standard control system.