KL1408 - Beckhoff Bus Terminal Digital Input

The Beckhoff KL1408 Bus Terminal Digital Input is designed to handle multiple digital signals with efficiency and reliability. It supports 1-wire connection technology and complies with EN 61131-2 type 1/3 standards, making it compatible with a wide range of industrial sensors. This terminal offers eight input channels, each operating at a 24 V DC nominal voltage, with clear switching thresholds at -3…+5 V for “0” and 11…30 V for “1”. An integrated 3.0 ms input filter ensures stable performance by eliminating noise and signal fluctuations, while each channel draws a typical 3 mA input current. With a K-bus current consumption of just 5 mA, the KL1408 is highly efficient for large I/O networks.

The module is housed in a compact polycarbonate enclosure with dimensions of 12 x 100 x 68 mm and weighs approximately 55 g, making it ideal for space-saving panel installations. It mounts securely on a 35 mm DIN rail and supports side-by-side assembly using Beckhoff’s double slot and key connection system. Wiring is simplified through spring-actuated terminals that accept solid, flexible, and ferrule conductors, ensuring quick and secure connections. Equipped with signal LEDs, the terminal provides clear visual indication of input status, which helps during commissioning and maintenance. Safety and reliability are reinforced with international approvals such as CE, UL, CCC, ATEX, IECEx, and DNV GL, along with vibration and EMC conformity, ensuring robust operation in diverse industrial conditions.

In practical applications, the KL1408 Bus Terminal Digital Input is widely used for monitoring switches, sensors, and push buttons across industries including automotive manufacturing, packaging systems, and building automation. Its compact footprint and channel density make it highly suitable for panel builders and OEMs requiring scalable I/O solutions. Engineering institutes also use it in training setups, allowing students to gain hands-on experience with PLCs and digital input management. Maintenance teams value its LED diagnostics, simple wiring, and long service life, which minimize downtime and enhance system reliability. With proven durability, high-quality certifications, and ease of integration, the Beckhoff KL1408 is a trusted choice for industries in India and worldwide seeking dependable Bus Terminal Digital Input modules. For more information, request a callback or refer to the official Beckhoff product page.