The Beckhoff KL4012 Bus Terminal is a compact and precise 2-channel analog output module designed for generating current signals in industrial automation systems. Supporting the standard 0…20 mA current range, it provides engineers with a robust solution for driving actuators, process devices, or reference signals where current loops are required.

Each of the two output channels offers a 12-bit resolution, enabling fine signal granularity and accurate control of connected devices. With an output error of less than ±0.1% of the full-scale value, the KL4012 ensures that analog outputs are both precise and repeatable, making it suitable for demanding process automation, machine control, and test system applications.

The terminal is capable of driving loads up to 500 Ω, making it compatible with a wide range of industrial devices such as proportional valves, actuators, or transmitters. A conversion time of approximately 1.5 ms allows the KL4012 to deliver fast signal updates, ensuring responsiveness in real-time control applications.

For flexibility, the module operates with a 24 V DC power supply via power contacts, but it can also function with 15 V DC when paired with the KL9515 power supply terminal. This adaptability makes it well-suited for integration into various system configurations.

Reliability and safety are reinforced through 500 V electrical isolation between the K-bus and signal voltage. This isolation protects the control system from voltage disturbances, ground loops, and electrical noise, ensuring stable performance even in harsh industrial environments.

As part of Beckhoff’s Bus Terminal I/O system, the KL4012 integrates seamlessly into modular automation architectures. It connects directly to the K-bus communication backplane, with all signal data mapped into the controller’s process image for straightforward programming and monitoring in Beckhoff’s TwinCAT software environment. This modularity provides engineers with the freedom to design tailored I/O systems while maintaining compact installation dimensions.

The compact form factor of the KL4012 saves valuable cabinet space while offering dual-channel capability, increasing channel density and reducing wiring complexity. This makes it particularly beneficial in applications where space is limited but precision analog output is required.

Typical use cases include process control loops for industrial plants, current-driven actuators in machine automation, and signal generation in test stands and laboratory equipment. The module’s fast update rate, precision, and rugged design ensure dependable operation across a broad spectrum of automation tasks.

In summary, the Beckhoff KL4012 Bus Terminal delivers a precise, compact, and reliable solution for analog current output. With its two 0…20 mA channels, 12-bit resolution, fast conversion, and robust electrical isolation, it provides engineers with the flexibility and performance needed for modern automation systems.