Product Description:

The LC5200 is a modular bus coupler produced by Beckhoff as part of the LC Bus Couplers series. Designed to sit between a fieldbus master and Beckhoff I/O terminals, it aggregates signal data and supplies power to the downstream K-bus. In an automation cell the unit functions as the communication gateway, translating remote control commands into local switching states and returning feedback to the controller. This arrangement simplifies wiring and permits flexible expansion along the DIN rail.

For discrete automation tasks the LC5200 supports 256 digital inputs/outputs, allowing sizeable sensor and actuator banks to share a single fieldbus node. Up to 64 bus terminals can be attached; these terminals draw their internal logic power from the K-bus, and the coupler can source 500 mA to that backplane. Application data are exchanged in fixed telegrams of 32 bytes in each direction, so the process image remains predictable for the host PLC. The power contacts that feed the field devices are rated to carry 10 A, and both those contacts and the internal electronics are energized from a 24 VDC supply. A 10 A fuse is recommended on the incoming line to coordinate with the contact current limit and prevent conductor overloads.

The electrical design is reinforced by a 500 V dielectric strength between logic and power domains, improving isolation in mixed-voltage panels. Mechanical installation is straightforward because the housing clips onto a 35 mm DIN rail and the field conductors land on spring-loaded terminals, so no additional baseplates are required. Environmental protection is limited to IP20, which is appropriate for cabinet mounting. Communication travels over a shielded twisted copper wire medium with five pins, keeping data integrity in electrically noisy enclosures. No analog channels are present, so signal conditioning is unnecessary.