C6920-1072-0040 by Beckhoff

The C6920-1072-0040 is an industrial personal computer produced by Beckhoff for the C6 Industrial PC Units series. Installed on a DIN rail or mounting plate, the device executes real-time control tasks, supervises motion sequences, and hosts human-machine interface software inside automated machinery. Its compact aluminum housing and 22-30 V DC supply range allow the controller to be installed in standard switchgear cabinets without separate climate modules.

The front panel provides one DVI-I connector for a digital or analog display connection, while two 10/100/1000BASE-T Ethernet ports connect the computer directly to machine-level and plant-wide network segments. The four USB 2.0 ports support scanners, service drives, and local data acquisition modules. Power is supplied at 22 to 30 V DC, allowing the unit to share low-voltage rails with standard control hardware. The enclosure has an IP20 rating, providing protection against accidental finger contact and supporting installation in closed electrical cabinets. Additional communication is available through a 9-pin RS-232 port and a separate 9-pin fieldbus interface for legacy bus couplers.

Continuous operation is supported at temperatures up to +55 °C, while the electronics can be stored at temperatures from -25 °C to +65 °C. Relative humidity may reach 95% RH without condensation. Two integrated fans direct cooling air through the chassis to help control internal temperatures during operation. The compact board layout withstands mechanical impacts of 5 G for periods of 30 ms. This shock tolerance supports installation on mobile assemblies and high-speed handling systems. Protection against electrostatic discharge follows the cabinet grounding arrangement used for the Ethernet shielding, and adequate power margins are maintained while the supply remains above the 22 V DC minimum.