The Beckhoff KL2542 Bus Terminal is a versatile and compact motion interface module designed to control two DC brush motors directly within Beckhoff’s modular Bus Terminal system. By integrating motor control capabilities into the K-bus architecture, the KL2542 provides an efficient and scalable solution for decentralised drive applications, reducing the need for external amplifiers and simplifying wiring.

The terminal supports motors with a rated load voltage of 8…48 V DC and can deliver a combined output of up to 2 × 3.5 A. Built-in protective mechanisms, including short-circuit proofing and thermal overload protection, ensure reliable and safe operation even under demanding conditions. This protection reduces the risk of hardware damage and increases the robustness of the entire automation system.

Motor control is achieved through a pulse-width modulation (PWM) signal operating at a 35 kHz clock frequency with a 180° phase shift per channel. This high switching frequency allows for smooth voltage control across the duty cycle range of 0…100%, providing efficient and low-noise motor performance. The phase-shifted PWM also helps reduce electromagnetic interference (EMI), which is particularly beneficial in environments with sensitive electronics.

The KL2542 offers fine control resolution, with 12-bit precision for current measurement and 16-bit resolution for speed control. These capabilities make it possible to achieve accurate torque regulation and speed management, enabling precise positioning and smooth motion in a variety of automation tasks.

Two outputs are provided for motor connection, along with straightforward wiring options to simplify integration. The compact terminal design allows the KL2542 to be mounted directly on a DIN rail, where it can operate alongside other Beckhoff I/O modules, analogue interfaces, and digital terminals. This modularity supports flexible system scaling, from small single-machine setups to complex distributed architectures.

Configuration and monitoring of the KL2542 are carried out using Beckhoff TwinCAT software, which provides intuitive tools for parameterisation, diagnostics, and real-time control. Engineers can monitor motor currents, track performance data, and adjust operating parameters to optimise system efficiency and response.

Typical applications for the KL2542 include conveyor control, automated guided vehicles (AGVs), dosing systems, packaging machinery, and laboratory automation. Its ability to drive two independent motors within a single compact terminal makes it particularly attractive for space-limited installations or cost-sensitive projects that still require high precision.

In summary, the Beckhoff KL2542 Bus Terminal delivers efficient and precise motion control for two DC brush motors with up to 48 V DC and 3.5 A per channel. Featuring robust protection, smooth PWM operation, high control resolution, and seamless integration into Beckhoff’s Bus Terminal ecosystem, it provides engineers with a reliable and flexible motor control solution for modern automation systems.