Beckhoff KL1154 I Terminal Module

Beckhoff KL1154 is a four-channel digital input terminal for 24 V DC signals in the KL1xxx family, designed to acquire binary process signals and transmit them galvanically isolated to the host controller. Each channel accepts 24 V DC with a typical input current of 5 mA and an input filter of about 3 ms, enabling fast, debounced readings of switching states. The module is powered and communicates via the K-bus and draws typically 8 mA from the bus; it provides 500 V isolation between field and controller for safe operation in industrial environments. Physical dimensions are 12 mm wide, 100 mm high, and 68 mm deep, and it weighs approximately 55 g. No address or configuration settings are required for KL1154, simplifying plug-and-play integration, and the terminal supports both positive switching and ground switching modes.