The Beckhoff KL2531 Bus Terminal is a compact and powerful motion interface module designed for controlling 2-phase stepper motors within Beckhoff’s modular I/O system. Offering 1-channel motor control with integrated drive technology, the KL2531 provides a streamlined solution for decentralised motion applications where compactness, efficiency, and precision are essential.

The KL2531 is designed to control stepper motors up to 1.5 A per phase at 24 V DC, supporting both unipolar and bipolar motor types. By enabling direct motor connection, the terminal eliminates the need for external amplifiers or separate drive units, reducing wiring complexity and installation costs. This makes it particularly suitable for compact machines, laboratory automation, or systems where space savings are a priority.

A key advantage of the KL2531 is its integration of I/O functionality alongside motion control. In addition to its motor output, the terminal provides two digital inputs that can be used for monitoring end positions or limit switches. This allows for straightforward implementation of safety interlocks, homing routines, or range limits without requiring separate input modules. By combining motion and I/O into one device, the KL2531 offers a cost-effective and space-saving solution.

The terminal operates on 24 V DC power supplied via the Bus Terminal’s power contacts, ensuring seamless integration into existing K-bus installations. Its compact housing and DIN-rail mounting allow for easy installation alongside other analogue, digital, or specialty Bus Terminals, supporting modular and scalable automation architectures.

From a control perspective, the KL2531 interfaces easily with Beckhoff’s TwinCAT software, which provides powerful tools for configuring motion parameters such as step resolution, speed, and acceleration. TwinCAT also enables advanced diagnostics, helping engineers monitor motor behaviour, detect faults, and optimise motion profiles in real time.

The KL2531 is particularly well suited to applications such as small positioning tasks, dosing systems, lab automation, pick-and-place units, and conveyor tracking, where stepper motors are commonly used. Its ability to deliver precise motor control in a compact form factor makes it ideal for decentralised automation setups where space is limited but high reliability is required.

In summary, the Beckhoff KL2531 Bus Terminal combines motion control and I/O functionality into one compact device. With support for 2-phase stepper motors, direct motor connection, integrated end-position inputs, and 24 V DC supply, it provides a practical, cost-efficient, and reliable solution for decentralised motion tasks within Beckhoff’s modular Bus Terminal system.