C6920-1078-0040 Beckhoff
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The Beckhoff C6920-1078-0040 is an industrial PC in the C6 Industrial PC Units series, featuring two cooling fans and an IP20 protection class. It comes equipped with 4 USB 2.0 ports, two RJ-45 Ethernet interfaces supporting up to 1000BASE-T, and a DVI-I video interface. The unit requires a supply voltage of 24 VDC and supports a maximum humidity of 95 percent, non-condensing.
Internal Product Review
The C6920-1078-0040 is a Beckhoff industrial PC unit with IP20 protection and a 24 VDC supply. Dual RJ-45 Ethernet interfaces with 10/100/1000BASE-T support make the platform especially well suited for high-speed machine communication. Four USB 2.0 ports and 5 G shock resistance add useful service access and dependable industrial performance.
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Product Description:
The C6920-1078-0040 is an industrial PC manufactured by Beckhoff as part of the C6 Industrial PC Units series. Housed in a compact aluminum chassis designed for cabinet installation, the unit consolidates PLC logic, motion control, and visualization on a single platform. It replaces separate controllers in automated cells where centralized computing is preferred.
It draws operating power from a regulated 24 VDC rail commonly available in machine panels, and current inrush and fault energy are limited by a built-in 16 A fuse that can be replaced from the front. Two axial fans push airflow through the enclosure, and a 50 mm ventilation clearance is required on all sides so heat sinks remain effective. Resilience against transport and installation shocks is proven at 5 G for 30 ms, while conformal coatings and gasket design allow reliable operation in ambient humidity up to 95 % non-condensing. The enclosure meets the IP20 protection class, indicating finger-safe openings but no liquid sealing, so it is intended for closed switchgear environments. A 3.5-inch motherboard minimizes footprint without sacrificing expandability, and supply conductors are landed on an 8-pole connector that accepts 1.5 mm² cable to help reduce voltage drop during peak load.
Communication resources support centralized and distributed architectures. The controller offers 2 × RJ-45 Ethernet interfaces capable of 10/100/1000BASE-T transfer rates for fieldbus or SCADA links. Four externally accessible 4 × USB 2.0 ports permit local data logging or barcode reader attachment, and a 1 × DVI-I port drives high-resolution operator panels without additional converters. For legacy devices, a 1 × RS232, 9-pin D-Sub interface provides point-to-point serial communication, while a second 9-pin connector exposes a dedicated fieldbus channel for proprietary protocols or service access.
