Beckhoff KL1114 4-Channel Digital Input Module

Beckhoff KL1114 is a four-channel digital input terminal for 24 V DC signals that delivers galvanically isolated inputs to the host controller with a fast 0.2 ms response. As part of Beckhoff's KL1xxx digital input family, it supports 2- or 3-wire wiring on the process side, enabling flexible sensing configurations for industrial sensors and switches. The module acquires binary control signals from the field and transmits them to the higher-level automation device in galvanically isolated form, protecting the controller from field disturbances and ground loops. Typical uses include reading 24 V DC signals from sensors such as proximity switches, pushbuttons, and limit switches in machine control, packaging lines, and process automation. The KL1114 provides four independent inputs, compatible with standard 24 V digital logic, and integrates into Beckhoff's bus terminal ecosystem, allowing fast, reliable I/O expansion for PLCs and PC-based control systems. With its compact footprint and rapid 0.2 ms response, it helps keep scan times tight in high-speed applications while maintaining robust isolation between field devices and the control system.