Beckhoff KL5111 Incremental Encoder Interface

Beckhoff KL5111 is a 1-channel incremental encoder interface terminal that directly connects 24 V incremental encoders to Beckhoff bus systems, enabling seamless integration with Beckhoff controllers. Encoder connections are A, B, and C on a 24 V supply, and the module supports a 16‑bit counter with up to 1,000,000 increments per second using fourfold (quadrature) decoding; the process image provides two 16‑bit data words and two 8‑bit control/status words. The unit is powered by 24 V DC (±15–20%), draws roughly 40 mA on the K-bus, and weighs about 60 g; its operating range is 0 to 55 °C (−25 to 85 °C storage), with 95% non-condensing humidity and EN 60068/EN 61000 compliance. This KL5111 terminal is specifically designed for direct encoder interfacing in Beckhoff motion control and automation projects.