The Beckhoff KL3012 Bus Terminal is a versatile 2-channel analog input module designed to acquire current signals with high precision in industrial automation environments. With its 0…20 mA input range and 12-bit resolution, the KL3012 delivers accurate and reliable signal acquisition for control systems requiring dependable analog data from sensors, transmitters, or other current-loop devices.

One of the key strengths of the KL3012 lies in its differential input technology, which provides enhanced immunity to electrical noise and interference. By measuring the difference between two inputs rather than referencing a common ground, the module ensures accurate current acquisition even in environments with significant electrical disturbances. This makes it ideal for applications in process automation, energy monitoring, and machinery where precision is essential.

The KL3012 offers a high level of accuracy, with a measurement uncertainty of less than ±0.3% of the full-scale value. This ensures that critical process data is captured with reliability, supporting precise control, monitoring, and regulation. The input circuitry features an internal resistance of 80 Ω plus a diode voltage drop of 0.7 V, providing consistent measurement characteristics across a wide operating range.

To ensure robust performance, the terminal includes surge voltage resistance up to 35 V DC, protecting the module and the overall system from transient voltage spikes. Additionally, it allows a common-mode voltage (UCM) of up to 35 V, further enhancing its suitability for demanding industrial environments. These protective features safeguard both the hardware and the integrity of the measurement data, even in electrically noisy or unstable installations.

Power for the KL3012 is supplied directly via the K-bus, which simplifies wiring and integration within Beckhoff’s modular Bus Terminal system. Each of the two analog input channels is mapped directly into the process image, making data immediately available to the controller. No additional configuration or addressing is required, allowing the terminal to operate as a true plug-and-play component.

The compact design of the KL3012 enables efficient use of space within control cabinets while still delivering high functionality. Its ability to capture two separate current signals in one terminal provides cost and space savings, making it an excellent choice for systems requiring multiple analog inputs in a small footprint.

Applications for the KL3012 include process control, energy and utility monitoring, environmental systems, and machine-level signal acquisition. It supports engineers in building precise, scalable, and reliable automation solutions.

In summary, the Beckhoff KL3012 Bus Terminal combines precision, robustness, and ease of integration. With its dual 0…20 mA channels, differential input design, high accuracy, and protective features, it offers a dependable solution for acquiring analog signals in modern automation systems.