The Beckhoff KL3458 Bus Terminal is a versatile and compact analogue input module designed for capturing industrial current signals. With eight single-ended input channels, the KL3458 enables efficient, high-density signal acquisition, making it a cost-effective and space-saving choice for process monitoring, machine control, and building automation applications.

Each of the eight channels supports the widely used 4…20 mA current range, the standard in industrial automation for transmitting measurement and process values such as temperature, pressure, flow, and level. By consolidating multiple inputs into one terminal, the KL3458 simplifies wiring, reduces the need for external components, and streamlines control cabinet design.

The module provides reliable data acquisition with a 12-bit resolution, enabling precise digitisation of analogue current signals. This accuracy ensures that even small variations within the input range are detected and processed, allowing for high-quality monitoring and control. The conversion time of approximately 4 ms ensures timely updates, making the terminal suitable for a wide variety of real-time automation applications where reliable signal throughput is critical.

With an internal resistance of less than 85 Ω, the KL3458 ensures accurate signal acquisition without imposing excessive load on the connected sensors or transmitters. This characteristic contributes to stable and consistent operation across a wide range of industrial environments.

Power for the KL3458 is supplied via the K-bus, which also provides seamless integration with Beckhoff’s modular Bus Terminal system. This design allows engineers to combine the KL3458 with other analogue, digital, and speciality terminals to build scalable, application-specific I/O solutions. Its slim housing further enhances flexibility, enabling the integration of multiple terminals in compact spaces while maintaining high channel density.

Typical use cases for the KL3458 include process automation, where it collects analogue data from field transmitters; machine control, where it interfaces with sensors for operational feedback; and building automation, where it monitors energy usage, HVAC parameters, or environmental sensors. In each of these settings, the KL3458 provides a reliable link between field devices and the control system, ensuring accurate data acquisition for informed decision-making.

The KL3458 is also designed with industrial robustness in mind. Its inputs are short-circuit proof, ensuring protection against wiring errors and enhancing system reliability. Combined with Beckhoff’s well-established platform for modular automation, it provides long-term dependability and flexibility in evolving automation systems.

In summary, the Beckhoff KL3458 Bus Terminal offers an efficient, compact, and high-precision solution for analogue current signal acquisition. With eight channels, 4…20 mA compatibility, 12-bit resolution, and low internal resistance, it is an excellent choice for applications requiring high-density analogue input in a robust and space-saving form factor.